PLoS One October 2020 PMID 32813715

Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways.

Stephen M Rowland, Mario V Caputo, Zachary A Jensen

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103
Peak: 97 in Aug 2020
across 4 sources since Aug 2020

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AI synopsis

What people are saying

The overall tone is highly positive, with discussions emphasizing the significance of the find—such as the earliest evidence of sand dune adaptation by ancient amniotes—that shifts understanding of prehistoric ecosystems. Words like 'cool', 'first', and 'significant' convey excitement and highlight the intellectual and scientific impact of the research, fostering deep engagement among enthusiasts and scholars.

AgreementStrong agreement

Most discussions highlight the significance of the findings, with many emphasizing that the discovery extends the known history of amniotes inhabiting desert environments by at least eight million years, demonstrating strong support for the publication's

InterestHigh interest

The discussions show high interest, with many posters expressing fascination with the ancient trackways and praising the discovery as remarkable and cool, indicating curiosity and engagement.

EngagementHigh engagement

Several comments reference specific details of the findings, such as mention of the different footprint patterns and implications for understanding early reptile adaptation, reflecting deep involvement.

ImpactHigh impact

Discussions frequently suggest that the research has substantial implications for paleontology and our understanding of early vertebrate adaptation to dry environments, implying high perceived impact.

Abstract in brief

  • This study reports the discovery of two ancient tetrapod (four-legged animal) trackways in eolian (wind-blown) sandstone from the Pennsylvanian period in the Grand Canyon, representing the earliest known fossil evidence of amniotes (reptiles and their relatives) living in sand dune environments.
  • The two trackways show different patterns, with one indicating a shallow undertrackway with a sideways drifting footprint pattern possibly used to navigate a slope, and the other being a deeper undertrackway with aligned claw marks, suggesting the animals moved directly uphill at a slow speed.
  • These findings extend the known history of amniotes inhabiting desert dune ecosystems to at least 8 million years earlier than previously thought, indicating that early reptiles or synapsids adapted to living in dry, sandy environments during the Pennsylvanian Epoch.

Top posts

Most liked on X and Bluesky
MC HAMMER e/acc
@MCHammer · X

Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos #scicomm https://t.co/QqnjbE29kV

Aug 21, 2020 · 412 likes · 74 shares · 2,686,509 followers View post →
John Hawks
@johnhawks · X

Grand Canyon trackway discovery: "They represent the earliest known occurrence of dunefield-dwelling amniotes―either basal reptiles or basal synapsids―thereby extending the known utilization of the desert biome by amniotes by at least eight million years" https://t.co/VLo02IlB9v https://t.co/ZYdZ2hgPoG

Aug 20, 2020 · 24 likes · 8 shares · 28,402 followers View post →
Thomas R. Holtz, Jr.
@TomHoltzPaleo · X

#PLOSONE: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Ca ... https://t.co/ohRLi0xPrZ

Aug 20, 2020 · 22 likes · 7 shares · 32,084 followers View post →
パンテオン(半遁モード)
@pantheo27705718 · X

3億年前の脊椎動物の足跡発見、米グランドキャニオンで最古 https://t.co/yWnJzJGdHl @cnn_co_jpより 論文フリー https://t.co/H1DPFxDw0d

Aug 24, 2020 · 16 likes · 3 shares · 12,973 followers View post →
Ken Tsuchiya
@paleont_kt · X

アメリカのグランドキャニオンで約3億1300万年前の脊椎動物の足跡化石を発見、という記事→ https://t.co/5MFYrtLZv8 。同じ側の前足と後ろ足が一緒に動く「側対歩」をしていた、と。論文はこれかな。英語ですが無料です→ https://t.co/vnCB1Ee8ca 。

Aug 25, 2020 · 11 likes · 2 shares · 6,700 followers View post →
Sous Nos Pieds
@Sous_Nos_Pieds · X

Et si vous voulez en savoir plus, l'article est en accès libre : https://t.co/OUCCXgd34o

Aug 22, 2020 · 7 likes · 1,704 followers View post →

All mentions

Lou ♌
@isis_0726 · X

↪

Sep 10, 2020 · 38 followers View post →
Tom Gill
@tomgillpredicts · X

Eolian processes meet fossil trackways! The best of both worlds! Rowland et al., PLOS ONE: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways https://t.co/tuyqduKxXn

Sep 8, 2020 · 1,574 followers View post →
geocappiello
@geocappiello · X

RT @geocappiello: #24August #August24 "Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Ca…

Aug 29, 2020 · 1 share · 1,907 followers View post →
田中順也@古生物のしたたかな生き方
@tanituki · X

RT @paleont_kt: アメリカのグランドキャニオンで約3億1300万年前の脊椎動物の足跡化石を発見、という記事→ https://t.co/5MFYrtLZv8 。同じ側の前足と後ろ足が一緒に動く「側対歩」をしていた、と。論文はこれかな。英語ですが無料です→ http…

Aug 25, 2020 · 2 shares · 2,156 followers View post →
Ken Tsuchiya
@paleont_kt · X

アメリカのグランドキャニオンで約3億1300万年前の脊椎動物の足跡化石を発見、という記事→ https://t.co/5MFYrtLZv8 。同じ側の前足と後ろ足が一緒に動く「側対歩」をしていた、と。論文はこれかな。英語ですが無料です→ https://t.co/vnCB1Ee8ca 。

Aug 25, 2020 · 11 likes · 2 shares · 6,700 followers View post →
"Weird Al" Nordengen
@heletwitta · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 25, 2020 · 74 shares · 3,348 followers View post →
Paula Kiger (She/Her)
@BigGreenPen · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 25, 2020 · 74 shares · 11,034 followers View post →
恐竜好き82太郎
@Y82da · X

RT @pantheo27705718: 3億年前の脊椎動物の足跡発見、米グランドキャニオンで最古 https://t.co/yWnJzJGdHl @cnn_co_jpより 論文フリー https://t.co/H1DPFxDw0d

Aug 25, 2020 · 3 shares · 1,009 followers View post →
Kazio
@Zyurakirosu_KZ · X

RT @pantheo27705718: 3億年前の脊椎動物の足跡発見、米グランドキャニオンで最古 https://t.co/yWnJzJGdHl @cnn_co_jpより 論文フリー https://t.co/H1DPFxDw0d

Aug 25, 2020 · 3 shares · 368 followers View post →
とよけらとぷす
@rex_toyo · X

RT @pantheo27705718: 3億年前の脊椎動物の足跡発見、米グランドキャニオンで最古 https://t.co/yWnJzJGdHl @cnn_co_jpより 論文フリー https://t.co/H1DPFxDw0d

Aug 24, 2020 · 3 shares · 2,152 followers View post →
パンテオン(半遁モード)
@pantheo27705718 · X

3億年前の脊椎動物の足跡発見、米グランドキャニオンで最古 https://t.co/yWnJzJGdHl @cnn_co_jpより 論文フリー https://t.co/H1DPFxDw0d

Aug 24, 2020 · 16 likes · 3 shares · 12,973 followers View post →
Gwenaëlle, PhD
@getneuro · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 24, 2020 · 74 shares · 3,219 followers View post →
geocappiello
@geocappiello · X

#24August #August24 "Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways" S. M. Rowland et al PLoS ONE 15(8): e0237636 https://t.co/HTqqCJ6l7O @GCanyonNews #fossilfootprints #Pennsylvania #GrandCanyon #paleontology https://t.co/vGkV9k6cPH

Aug 24, 2020 · 3 likes · 1 share · 1,906 followers View post →
BeanAwake
@BeanAwake · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 24, 2020 · 74 shares · 183 followers View post →
EduMaritime
@edumaritime · X

Top story: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways https://t.co/LUVXih1EX5, see more https://t.co/JDo3bLVujG

Aug 23, 2020 · 2,320 followers View post →
BIG MARV
@BIGGMARV · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 23, 2020 · 74 shares · 27,472 followers View post →
University of Bristol Earth Sciences
@UoBEarthScience · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 23, 2020 · 74 shares · 4,545 followers View post →
Talla Hopper
@TallaHopper · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 23, 2020 · 74 shares · 822 followers View post →
Nicholas Fletcher
@nkfletch00 · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 23, 2020 · 74 shares · 508 followers View post →
Tim Shin
@gneiss_tim · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 23, 2020 · 74 shares · 1,274 followers View post →
Megan O'Sullivan
@PoseySessions · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 23, 2020 · 74 shares · 2,678 followers View post →
H UGATTO
@Bacomeiser · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 154 followers View post →
Scott Melnyk
@IchnoMelnyk · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 354 followers View post →
Jacob Rudolph
@gr8fuljake85 · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 190 followers View post →
Andrew Lonero
@And1129 · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 1,878 followers View post →
Sam
@tehsma · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 395 followers View post →
Datu Adiatma
@mas_datu · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 521 followers View post →
Graham Ramsay
@grahamramsay · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 137 followers View post →
PlanetEarth@Lakehead
@PlanetEarthGeol · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 1,003 followers View post →
Barbara Wortham, Ph.D.
@BabsWortham · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 567 followers View post →
African Geoscientists
@AFRICANGeosci · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 1,209 followers View post →
❄️ Liz Madsen ❄️☃️
@Paleonut_ · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 2,124 followers View post →
@Kaskir
@Kaskir6 · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 22 followers View post →
corcendare
@corcendare · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 77 followers View post →
Colin Morley
@wessexougs · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 247 followers View post →
Christopher Dean
@PrincessQuatris · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 983 followers View post →
chez starbuck
@lili_gasparr · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 357 followers View post →
Dr. Khánh Tô (she/her)
@TheKhanine · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 611 followers View post →
Anna-phibian Croco Deyle
@AnnaDeyle · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 3,356 followers View post →
Based Hatter
@BasedHatter · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 4,492 followers View post →
Heather Furlong
@Heather_F4 · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 316 followers View post →
Dr Liam Herringshaw
@fossiliam · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 2,312 followers View post →
Lisa Boulanger
@BoulangerLab · X

I noticed this trackway as I hiked up Bright Angel Trail in Sept 2016, but had no idea it was so recently exposed. Cool to learn it may have been made by a basal amniote sidestepping up steep sand. https://t.co/nHgiX2BYnL https://t.co/x84Ixgsu4f

Aug 22, 2020 · 1 like · 1,466 followers View post →
[bB][oO][nN]{2}\S{1,3}
@SNUGSFBay · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 4,152 followers View post →
Pureblood Tom (#imissmyemptyfreeways)
@tomgarseeya · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 309 followers View post →
Xena Warrior Queen "Je ne regrette rien!"
@XnaWarriorQueen · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 1,338 followers View post →
scyrene
@scyrene · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 1,860 followers View post →
Critical Gravitas Support Failure
@lowongravitas · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 27 followers View post →
Michael Saggio
@MichaelSaggio · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 794 followers View post →
m@d#u
@SacriliciousM · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 279 followers View post →
Andrej Spiridonov
@AndrejSpiridon4 · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 1,815 followers View post →
Space Pirate
@Drebin405 · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 14 followers View post →
Fossil Locator
@FossilLocator · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 17,793 followers View post →
FrecklesXX20
@FrecklesXX20 · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 6,479 followers View post →
Emily G Mitchell
@EGMitchell · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 2,624 followers View post →
Jose Cuevas
@JoeMCuevas · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 697 followers View post →
Scott Hartman
@skeletaldrawing · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 15,501 followers View post →
Jess Miller-Camp, Ph.D.
@DeadGators · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 718 followers View post →
Dr. Darren Abbey
@thebiologistisn · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 8,457 followers View post →
Lee Drake
@Lee__Drake · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 2,215 followers View post →
AlexRyH
@AlexRyH · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 103 followers View post →
Matt Challacombe
@MattChallacombe · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 1,940 followers View post →
Meikedit.bsky.social
@Michelle_dit · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 479 followers View post →
Leigh Anne Riedman
@NeoprotFossil · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 419 followers View post →
Dr. Darcy Shapiro
@darcy_shapiro · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 1,495 followers View post →
Zuni Dinosaur Institute for Geosciences
@ZDIG_Official · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 796 followers View post →
Ashley W Poust
@AshPoust · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 2,508 followers View post →
Chase Brownstein
@ChaseBrownstein · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 1,766 followers View post →
Jonathan Mitchell
@JonSMitchell · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 22, 2020 · 74 shares · 279 followers View post →
Jeff Karp (Pronouns: he/him/his)
@MrJeffKarp · X

Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Ca ... https://t.co/HAZB0P3gBy

Aug 22, 2020 · 4,018 followers View post →
Sous Nos Pieds
@Sous_Nos_Pieds · X

Et si vous voulez en savoir plus, l'article est en accès libre : https://t.co/OUCCXgd34o

Aug 22, 2020 · 7 likes · 1,704 followers View post →
dearmadfiacha
@dearmadfiacha · X

@wef Regarding the other Norwegian find found today... https://t.co/HXcfoRaQpU

Aug 21, 2020 · 12 followers View post →
WilliWilliWilli
@politicalwilli · X

RT @Cara_TXZEAL: Geek Alert ... Paleontology Grand Canyon Reptile aka tretrapod track fossils These trackways are the first tetrapod tr…

Aug 21, 2020 · 3 shares · 7,790 followers View post →
Eddie
@Eddie37344025 · X

RT @Cara_TXZEAL: Geek Alert ... Paleontology Grand Canyon Reptile aka tretrapod track fossils These trackways are the first tetrapod tr…

Aug 21, 2020 · 3 shares · 49 followers View post →
Francesca Anastasia
@anyaii · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 21, 2020 · 74 shares · 240 followers View post →
Jellenne
@Jellenne · X

RT @Cara_TXZEAL: Geek Alert ... Paleontology Grand Canyon Reptile aka tretrapod track fossils These trackways are the first tetrapod tr…

Aug 21, 2020 · 3 shares · 48,946 followers View post →
Cara TXZEAL
@Cara_TXZEAL · X

Geek Alert ... Paleontology Grand Canyon Reptile aka tretrapod track fossils These trackways are the first tetrapod tracks reported from the Manakacha Formation and the oldest in the Grand Canyon region. https://t.co/AOo86yPL9G

Aug 21, 2020 · 5 likes · 3 shares · 13,710 followers View post →
Igor Carron
@IgorCarron · X

RT @MCHammer: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos…

Aug 21, 2020 · 74 shares · 5,300 followers View post →
MC HAMMER e/acc
@MCHammer · X

Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways #Hamm400aos #scicomm https://t.co/QqnjbE29kV

Aug 21, 2020 · 412 likes · 74 shares · 2,686,509 followers View post →
Darío Estraviz López
@DarioEstraviz · X

RT @TomHoltzPaleo: #PLOSONE: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Ca ... https:…

Aug 21, 2020 · 7 shares · 2,949 followers View post →
African Synchrotron
@AfSynchrotron · X

Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Canyon trackways https://t.co/tlAEf5RD6Q via @PLOSOne https://t.co/mYNc6I317a

Aug 21, 2020 · 2,920 followers View post →
hominid
@dtmurphree · X

RT @johnhawks: Grand Canyon trackway discovery: "They represent the earliest known occurrence of dunefield-dwelling amniotes―either basal r…

Aug 20, 2020 · 8 shares · 776 followers View post →
チョビ之助
@Cyobinosuke · X

RT @TomHoltzPaleo: #PLOSONE: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Ca ... https:…

Aug 20, 2020 · 7 shares · 490 followers View post →
Reid Farmer (TR_Farmer_archaeology)
@farmer_tr · X

RT @johnhawks: Grand Canyon trackway discovery: "They represent the earliest known occurrence of dunefield-dwelling amniotes―either basal r…

Aug 20, 2020 · 8 shares · 1,601 followers View post →
Alvaro Garza III
@AGarzaIII · X

RT @johnhawks: Grand Canyon trackway discovery: "They represent the earliest known occurrence of dunefield-dwelling amniotes―either basal r…

Aug 20, 2020 · 8 shares · 85 followers View post →
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@MonkeyHeadNeb · X

RT @johnhawks: Grand Canyon trackway discovery: "They represent the earliest known occurrence of dunefield-dwelling amniotes―either basal r…

Aug 20, 2020 · 8 shares · 815 followers View post →
Hank Greely
@HankGreelyLSJU · X

RT @johnhawks: Grand Canyon trackway discovery: "They represent the earliest known occurrence of dunefield-dwelling amniotes―either basal r…

Aug 20, 2020 · 8 shares · 8,559 followers View post →
President Barbicane
@PBarbicane · X

RT @johnhawks: Grand Canyon trackway discovery: "They represent the earliest known occurrence of dunefield-dwelling amniotes―either basal r…

Aug 20, 2020 · 8 shares · 209 followers View post →
fernanda castano
@ferwen · X

#PLOSONE: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Ca ... https://t.co/GTlogb7QYt

Aug 20, 2020 · 2 likes · 2,710 followers View post →
nebcheprure
@nebcheprure · X

RT @johnhawks: Grand Canyon trackway discovery: "They represent the earliest known occurrence of dunefield-dwelling amniotes―either basal r…

Aug 20, 2020 · 8 shares · 70 followers View post →
Rust Cohle's Burner
@WoLf_PaK_MeMbA · X

RT @johnhawks: Grand Canyon trackway discovery: "They represent the earliest known occurrence of dunefield-dwelling amniotes―either basal r…

Aug 20, 2020 · 8 shares · 1,197 followers View post →
John Hawks
@johnhawks · X

Grand Canyon trackway discovery: "They represent the earliest known occurrence of dunefield-dwelling amniotes―either basal reptiles or basal synapsids―thereby extending the known utilization of the desert biome by amniotes by at least eight million years" https://t.co/VLo02IlB9v https://t.co/ZYdZ2hgPoG

Aug 20, 2020 · 24 likes · 8 shares · 28,402 followers View post →
Colecionadores de Ossos
@Colecionadores2 · X

RT @TomHoltzPaleo: #PLOSONE: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Ca ... https:…

Aug 20, 2020 · 7 shares · 6,259 followers View post →
Richard_Carr
@EmuLarge · X

RT @TomHoltzPaleo: #PLOSONE: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Ca ... https:…

Aug 20, 2020 · 7 shares · 1,855 followers View post →
Dr. Claudia Serrano
@paleoduck · X

RT @TomHoltzPaleo: #PLOSONE: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Ca ... https:…

Aug 20, 2020 · 7 shares · 637 followers View post →
SJW Godzilla Punishes Hubris
@majingojira1 · X

RT @TomHoltzPaleo: #PLOSONE: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Ca ... https:…

Aug 20, 2020 · 7 shares · 481 followers View post →
Andrew Milner
@AndrewTracks · X

RT @TomHoltzPaleo: #PLOSONE: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Ca ... https:…

Aug 20, 2020 · 7 shares · 1,420 followers View post →
Thomas R. Holtz, Jr.
@TomHoltzPaleo · X

#PLOSONE: Early adaptation to eolian sand dunes by basal amniotes is documented in two Pennsylvanian Grand Ca ... https://t.co/ohRLi0xPrZ

Aug 20, 2020 · 22 likes · 7 shares · 32,084 followers View post →
Pennsylvania Grand Canyon Trackways: Ancient Basal-Amniote ...
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https://journals ... org/plosone/article?id=10.1371/journal .pone.0237636 This is the more layman's and a lot more interesting article about it.

Oct 12, 2024 View →
Discovery of Ancient Animal Tracks on Rim to River Hike at Grand ...
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https://journals.plos. org/plosone/article?id=10.1371/journal. pone.0237636#abstract0. journals.plos.org. Early adaptation to eolian sand ...

Apr 29, 2024 View →
Cliff collapse reveals 313-million-year-old fossil footprints in Grand ...
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PLOS ONE, 2020; 15 (8): e0237636 DOI: 10.1371/journal.pone.0237636. Cite This Page: MLA; APA; Chicago. National Park Service. "Cliff collapse ...

Aug 21, 2020 View →