PubHawk
Nature July 2015 PMID 26106857

Hallucigenia's head and the pharyngeal armature of early ecdysozoans.

Martin R Smith, Jean-Bernard Caron

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110
Peak: 3 in Nov 2022
across 5 sources since Dec 2020

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AI synopsis

What people are saying

The discussions reflect a moderate level of interest, with users referencing horizontal comparisons like '2015’s rediscovery' and mentioning features resembling those in other ancient organisms. The tone varies from curious to skeptical, with some posts referencing past discoveries and others questioning the implications, showing a general but surface-level engagement with the article's content.

AgreementNeither agree nor disagree

The discussions show mixed reactions, with some users expressing curiosity and others showing skepticism about the fossil interpretations and evolutionary implications.

InterestModerate interest

Many posts mention the fossil's features and evolutionary significance, indicating moderate interest, but some focus on related topics or personal opinions, reducing overall engagement.

EngagementNeutral engagement

Posts generally acknowledge the article without deep analysis or detailed discussion, reflecting superficial engagement rather than intensive debate.

ImpactNeutral impact

While some discussions hint at evolutionary importance, most responses are brief or casual, suggesting limited perceived immediate impact of the publication.

Abstract in brief

  • The study revisits the ancient fossil Hallucigenia sparsa, revealing an elongate head with simple eyes and a complex mouth structure, including sclerotized elements and a differentiated foregut.
  • These features are similar to structures found in tardigrades, stemgroup euarthropods, and cycloneuralian worms, suggesting deep evolutionary homology among these groups.
  • Phylogenetic analysis indicates that these mouthparts and structures were present in the common ancestor of ecdysozoans, highlighting a shared evolutionary origin for this diverse group.
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Most liked on X and Bluesky
Jun
@ni075 · X

@satoshikawasaki ハルキゲニアは2015年の再記載でかなり大きめな全身化石が載せられて驚きました…この図のaとbがそれぞれ最大と最小（スケールバー5mm） https://t.co/EHo1C7gc6m

Nov 29, 2022 · 3 likes · 2 shares · 5,998 followers View post →
Anomalocaris
@M_Anomalocaris · X

Para más información: —Smith, M. R., & Caron, J. B. (2015). Hallucigenia’s head and the pharyngeal armature of early ecdysozoans. Nature, 523(7558), 75-78 <https://t.co/Cw9YqRySxt >

Jul 21, 2021 · 1 like · 139 followers View post →
Yael Dragwyla
@YDrgwyla · X

Alien Biosphere Evolution #8: The Arthropod Recipe https://t.co/43zM6nh8aX via @YouTube

Jan 23, 2021 · 1 like · 1 share · 25 followers View post →
✈️Mokologue
@mokologue · X

RT @YDrgwyla: Alien Biosphere Evolution #8: The Arthropod Recipe https://t.co/43zM6nh8aX via @YouTube

Jan 23, 2021 · 1 share · 14,585 followers View post →
PEL205
@PEL205 · X

RT @ni075: @satoshikawasaki ハルキゲニアは2015年の再記載でかなり大きめな全身化石が載せられて驚きました…この図のaとbがそれぞれ最大と最小（スケールバー5mm） https://t.co/EHo1C7gc6m

Nov 29, 2022 · 2 shares · 610 followers View post →
アフラマヅダ＠検索候補BANから開放されてはみたものの…。
@afla_war · X

RT @ni075: @satoshikawasaki ハルキゲニアは2015年の再記載でかなり大きめな全身化石が載せられて驚きました…この図のaとbがそれぞれ最大と最小（スケールバー5mm） https://t.co/EHo1C7gc6m

Nov 29, 2022 · 2 shares · 569 followers View post →

All mentions

Haroldo O. Pinheiro
@Haroldo0k · X

Alien Biosphere Evolution #8: The Arthropod Recipe https://t.co/GyCEGtXgKp via @YouTube

Nov 23, 2024 · 242 followers View post →
アフラマヅダ＠検索候補BANから開放されてはみたものの…。
@afla_war · X

RT @ni075: @satoshikawasaki ハルキゲニアは2015年の再記載でかなり大きめな全身化石が載せられて驚きました…この図のaとbがそれぞれ最大と最小（スケールバー5mm） https://t.co/EHo1C7gc6m

Nov 29, 2022 · 2 shares · 569 followers View post →
PEL205
@PEL205 · X

RT @ni075: @satoshikawasaki ハルキゲニアは2015年の再記載でかなり大きめな全身化石が載せられて驚きました…この図のaとbがそれぞれ最大と最小（スケールバー5mm） https://t.co/EHo1C7gc6m

Nov 29, 2022 · 2 shares · 610 followers View post →
Jun
@ni075 · X

@satoshikawasaki ハルキゲニアは2015年の再記載でかなり大きめな全身化石が載せられて驚きました…この図のaとbがそれぞれ最大と最小（スケールバー5mm） https://t.co/EHo1C7gc6m

Nov 29, 2022 · 3 likes · 2 shares · 5,998 followers View post →
Anomalocaris
@M_Anomalocaris · X

Para más información: —Smith, M. R., & Caron, J. B. (2015). Hallucigenia’s head and the pharyngeal armature of early ecdysozoans. Nature, 523(7558), 75-78 <https://t.co/Cw9YqRySxt >

Jul 21, 2021 · 1 like · 139 followers View post →
✈️Mokologue
@mokologue · X

RT @YDrgwyla: Alien Biosphere Evolution #8: The Arthropod Recipe https://t.co/43zM6nh8aX via @YouTube

Jan 23, 2021 · 1 share · 14,585 followers View post →
Yael Dragwyla
@YDrgwyla · X

Alien Biosphere Evolution #8: The Arthropod Recipe https://t.co/43zM6nh8aX via @YouTube

Jan 23, 2021 · 1 like · 1 share · 25 followers View post →
Helena
@Leiuqeze_Yxam · X

Alien Biosphere Evolution #8: The Arthropod Recipe https://t.co/LoOVYse51j a través de @YouTube

Dec 25, 2020 · 189 followers View post →