PLoS One June 2015 PMID 25333823

Locomotion in extinct giant kangaroos: were sthenurines hop-less monsters?

Christine M Janis, Karalyn Buttrill, Borja Figueirido

Mentions

115
Peak: 5 in Mar 2021
across 5 sources since May 2020

Extended reach

880,327
potential audience

Total likes

17,604

Video views

804,383

Mentions per month

May 2020 – Jul 2025

Where it's discussed

  • News81 articles
  • Facebook11 posts
  • Blogs11 articles
  • X / Twitter10 posts
  • YouTube2 videos

AI synopsis

What people are saying

The collection demonstrates a shared enthusiasm for the study of extinct giant kangaroos, with posts highlighting their large size and unique locomotion, such as the mention of a 'bipedal striding gait' for Procoptodon goliah and comments like 'Too big' reflecting amazement at their size. The tone ranges from playful excitement to informative engagement, which collectively indicates strong interest and moderate impact of the research.

AgreementModerate agreement

Most posts accept or appreciate the research, highlighting the significance of understanding extinct kangaroo locomotion, as seen in comments like 'If you are not absolutely DELIGHTED...' and references to the findings.

InterestHigh interest

The discussion shows high interest, with posts expressing enthusiasm and curiosity about the subject, exemplified by phrases such as 'LISTEN' and comments about the large size and biomechanics of the kangaroos.

EngagementModerate engagement

Posts engage with specific details about anatomy and locomotion, including mentions of rigid spines and walking gait, suggesting a thoughtful exploration of the research findings.

ImpactModerate impact

Communications convey that the research influences perceptions of extinct species and broadens understanding of their movement, indicated by references to how their anatomy differs from expectations of hopping behavior.

Abstract in brief

  • Extinct giant kangaroos called sthenurines were likely not capable of hopping; instead, they probably used a bipedal walking gait, similar to a "striding" movement seen in some modern tree-kangaroos.
  • These kangaroos evolved to be large and robust, with some species like Procoptodon goliah reaching nearly 240 kg, but their anatomy—such as stiff spines and specialized limbs—probably made traditional hopping biomechanically difficult.
  • Evidence from their bone structure suggests they adapted for a different style of locomotion, supporting an upright stance and supporting their weight on one leg at a time, indicating they used a slow, bipedal walk rather than hopping.

Top posts

Most liked on X and Bluesky
Prof. Katie Hinde
@Mammals_Suck · X

But the extinct giant short-faced macropod Procoptodon goliah was even bigger, weighing in at ~240kg! This large kangaroo was so big that it probably could not hop & instead had a "bipedal striding gait" (Janis et al. 2014) #2021MMM https://t.co/UosfBmIu1E

Mar 31, 2021 · 43 likes · 4 shares · 22,733 followers View post →
Betsy Appleton
@Betsy_Appleton · X

@TessaDare LISTEN, if you are not absolutely DELIGHTED in the mere existence of people who study locomotion in extinct giant kangaroos, I don't wanna come to your party anyway. (ref: my favorite accidental click to test something in my library many many years ago-https://t.co/6Jx5eIatLq)

Nov 12, 2021 · 8 likes · 307 followers View post →
Ausarchosaur is counting the days til PhP Ice Age
@ausar_the · X

@phoexalt47 Too big. The lack of hopping is also reflected in their anatomy: sthenurines had a rigid lumbar spine (not a flexible one for extra "spring" in the hop) and heel bones less resistant to stress. https://t.co/6DpgQPae1b https://t.co/geSAo5psRP

Sep 25, 2023 · 1 like · 7,349 followers View post →
Darío Estraviz López
@DarioEstraviz · X

@EdoardoElric Para correr. https://t.co/gn42uDf1xO

May 18, 2020 · 1 like · 2,948 followers View post →
Aditya Srinath
@adi_smilus · X

@Schaffer5994 @HJ_arts02 https://t.co/2p3fW3IzvT https://t.co/WMLOf58Moz

Jul 10, 2025 · 1 like · 1,163 followers View post →
March Mammal Madness
@MMMletsgo · X

RT @Mammals_Suck: But the extinct giant short-faced macropod Procoptodon goliah was even bigger, weighing in at ~240kg! This large kangaroo…

Mar 31, 2021 · 4 shares · 31,214 followers View post →

All mentions

Aditya Srinath
@adi_smilus · X

@Schaffer5994 @HJ_arts02 https://t.co/2p3fW3IzvT https://t.co/WMLOf58Moz

Jul 10, 2025 · 1 like · 1,163 followers View post →
Ausarchosaur is counting the days til PhP Ice Age
@ausar_the · X

@phoexalt47 Too big. The lack of hopping is also reflected in their anatomy: sthenurines had a rigid lumbar spine (not a flexible one for extra "spring" in the hop) and heel bones less resistant to stress. https://t.co/6DpgQPae1b https://t.co/geSAo5psRP

Sep 25, 2023 · 1 like · 7,349 followers View post →
Betsy Appleton
@Betsy_Appleton · X

@TessaDare LISTEN, if you are not absolutely DELIGHTED in the mere existence of people who study locomotion in extinct giant kangaroos, I don't wanna come to your party anyway. (ref: my favorite accidental click to test something in my library many many years ago-https://t.co/6Jx5eIatLq)

Nov 12, 2021 · 8 likes · 307 followers View post →
Ashwin Baindur
@ashwin_baindur · X

RT @Mammals_Suck: But the extinct giant short-faced macropod Procoptodon goliah was even bigger, weighing in at ~240kg! This large kangaroo…

Apr 1, 2021 · 4 shares · 3,580 followers View post →
Natick Bobcat
@NatickBobCat · X

RT @Mammals_Suck: But the extinct giant short-faced macropod Procoptodon goliah was even bigger, weighing in at ~240kg! This large kangaroo…

Mar 31, 2021 · 4 shares · 3,072 followers View post →
sm9eb
@sm9eb · X

RT @Mammals_Suck: But the extinct giant short-faced macropod Procoptodon goliah was even bigger, weighing in at ~240kg! This large kangaroo…

Mar 31, 2021 · 4 shares · 1,759 followers View post →
MC Marmot
@MC_Marmot · X

RT @Mammals_Suck: But the extinct giant short-faced macropod Procoptodon goliah was even bigger, weighing in at ~240kg! This large kangaroo…

Mar 31, 2021 · 4 shares · 1,772 followers View post →
March Mammal Madness
@MMMletsgo · X

RT @Mammals_Suck: But the extinct giant short-faced macropod Procoptodon goliah was even bigger, weighing in at ~240kg! This large kangaroo…

Mar 31, 2021 · 4 shares · 31,214 followers View post →
Prof. Katie Hinde
@Mammals_Suck · X

But the extinct giant short-faced macropod Procoptodon goliah was even bigger, weighing in at ~240kg! This large kangaroo was so big that it probably could not hop & instead had a "bipedal striding gait" (Janis et al. 2014) #2021MMM https://t.co/UosfBmIu1E

Mar 31, 2021 · 43 likes · 4 shares · 22,733 followers View post →
Darío Estraviz López
@DarioEstraviz · X

@EdoardoElric Para correr. https://t.co/gn42uDf1xO

May 18, 2020 · 1 like · 2,948 followers View post →