Reposted by Dr James RuleSkype a Scientist @skypeascientist.bsky.social · 03/10/2026We at Skype a Scientist are deeply troubled by the closure of the Academy of Natural Sciences. We urge you to contact Drexel University Leadership and Academy interim leader Trish Wellenbach to urge them to reopen the museum. President Merlo president@Drexel.edu Trish Wellenbach tw958@drexel.edu 0223113
Reposted by Dr James RuleAinsley S @americanbeetles.bsky.social · 23/09/2026pls note the bats have been carefully depicted HANGING FROM THEIR LITTLE BRANCHES on this radial phylogeny (bats drawn by Fiona Reid, whose portfolio is here --> fionareid.ca) 2298109
Reposted by Dr James RuleAlessandro Chiarenza @macroecoevoale.bsky.social · 16/09/2026How do you take the temperature of a T. rex 66 million years too late? Time machine? Impossible. Billionaire’s dinosaur island? Risky. Geochemistry? Much safer 🦖🌡️ Our new Science Advances paper adds evidence for an endothermic, “warm-blooded” T. rex, link to the paper 🔗 doi.org/10.1126/scia... 18528
Reposted by Dr James RuleAndy Farke @andyfarke.bsky.social · 16/09/2026A must-read article! (and I truly appreciate that the authors emphasize the importance of the primary data in museum collections, as well as the key roles of both molecular *and* morphological data) 1142
Reposted by Dr James RuleJournal of Systematic Palaeontology @journalsystpal.bsky.social · 16/09/2026Transforming turtle systematics: challenges, opportunities and the path ahead by Evers and Joyce 🔗 buff.ly/9dnDRTc #PaleoSky #turtles #systematics #phylogeny #morphology View the full series here: Perspectives on the Systematics of Fossil Organisms: Challenges and Opportunities: buff.ly/qiJ0XUO 0137
Reposted by Dr James RuleProfessor Euan Ritchie FAMS @euanritchie.bsky.social · 13/09/2026The news none of us wanted www.abc.net.au/news/2026-09...abc.net.auBreaking: SA records first bird flu case in sea lionThe sea lion was found at Seal Bay on Kangaroo Island. 510650
Reposted by Dr James RuleEric Scott @captainfossil.bsky.social · 11/09/2026For #FossilFriday: holotype of the extinct Pleistocene bison species Bison antiquus, one of millions of specimens housed in the collections of the Academy of Natural Sciences of Drexel University - the oldest natural history museum in the US, now slated for permanent closure on 30 September. 🧪 24618
Dr James Rule @palaeo-jrule.bsky.social · 10/09/2026New paper lead by Siobhan Pearson, exploring morphological differences between fur seal and sea lion crania 🦭 We found that allometry explains most differences between the two groups. This project originated as Siobhan's Masters project at @nhm-london.bsky.social doi.org/10.1111/mms....doi.orgQuantifying the Morphological Differences Between Fur Seals and Sea LionsThe eared seals (family Otariidae) are divided into fur seals and sea lions, despite a lack of cladistic support for these groups. The division is primarily based on hair morphology, and it is unknow... 079
Reposted by Dr James RuleGemma Benevento @gemmabenevento.bsky.social · 10/09/2026Delighted to finally share our paper examining Paleogene mammal faunas and global and regional environmental change in Central Asia.... www.nature.com/articles/s41... @nielsmeijer.bsky.social @sgn.one @idiv-research.bsky.social 13912
Reposted by Dr James RulePaul Z. Barrett PhD @nimravenous.bsky.social · 09/09/2026Happy to announce the publication of our article in Nature Ecology & Evolution on adaptive zone evolution in terrestrial mammal carnivores. Over the next few days, I’ll share the major results—and by extension, take you on a tour of carnivore evolution. (rdcu.be/6okG1hVhvtHa) 1/nrdcu.be 2139
Reposted by Dr James RuleTom Near @tjnear.bsky.social · 29/08/20261/11 🐟 2nd new preprint today from @chasedbrownstein.bsky.social We investigated how losing the swim bladder, the organ that most fishes use to control their buoyancy, has shaped the diversity of ray-finned fishes over 90 million years of Earth history. The results surprised us. 🧵 110943
Reposted by Dr James RuleJohn P. Friel, Ph.D. @friel.bsky.social · 20/08/2026Banse, M., M. Van Steenberge, G. Sonet, et al. 2026. Echoes of Evolution in Holocentridae: Harmony Between Phylogeny, Morphology and Acoustics. Ecology and Evolution 16, no. 8: e74152. 🐟🧪 doi.org/10.1002/ece3....onlinelibrary.wiley.comEchoes of Evolution in Holocentridae: Harmony Between Phylogeny, Morphology and AcousticsUsing phylogenetic, morphological, and acoustic data from 53 species, we reconstructed the evolution of acoustic communication in nocturnal reef fishes of the family Holocentridae. Our results reveal... 02511
Reposted by Dr James RuleRobert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 18/08/2026#toothtuesday A large lower premolar of the extinct "killer" walrus Pelagiarctos thomasi from the Sharktooth Hill Bonebed near Bakersfield, California, ~15.5 myo, middle Miocene. Specimen in @ucmpberkeley collections, published in Barnes, 1988. 🦖🐬 0194
Reposted by Dr James Ruleevolsara.bsky.social @evolsara.bsky.social · 05/08/2026🦤 What do we really know about the Dodo? The dodo was likely nocturnal and, less surprisingly, its telencephalon was perfectly normal for a pigeon of its size. This paints a very different picture of one of history's most misunderstood birds. @evoneuro.bsky.social Paper: doi.org/10.1093/zool...youtu.beNew Brain Scans Suggest the Dodo Was Active at NightYouTube video by People Are Fish 22910
Reposted by Dr James RuleZ. Jack Tseng @tsengzj.bsky.social · 30/07/2026Exhilarated to share a 2nd @science.org cover article this month from our lab @ucberkeleyofficial.bsky.social! A collaboration with US & Mexico colleagues on the role of a Mexican biogeographic holding pen in shaping the Great American Biotic Interchange (GABI)(1/11) www.science.org/doi/10.1126/... 210954
Reposted by Dr James RuleThomas R. Holtz, Jr. @arctomet.bsky.social · 29/07/2026Highly aquatic marine stem archosaur with soft tissue preservation | Science Advances www.science.org/doi/10.1126/...science.orgHighly aquatic marine stem archosaur with soft tissue preservationA 240-million-year-old reptile exhibits elongate forelimbs, a morphology consistent with adaptations to an aquatic lifestyle. 0378
Reposted by Dr James RuleRoyal Society Publishing @royalsocietypublishing.org · 17/07/2026How did seals evolve to hear on land and underwater? This #ProcB study found a specialised ear tissue enables amphibious hearing in pinnipeds, revealing this unique adaptation evolved more than 26 million years ago. doi.org/10.1098/rspb... | #Evolution #Palaeontology 02815
Reposted by Dr James RuleBrandon Moore, PhD @rando.insalubrio.us · 17/07/2026Pinnipeds (seals, sea lions, and walruses) are the only mammals that hear well in both air and water. This study suggests that cavernous, blood-filled ear tissue helps make this amphibious sensation possible! 🧪 royalsocietypublishing.org/rspb/article... 0276
Reposted by Dr James RuleJournal of Systematic Palaeontology @journalsystpal.bsky.social · 17/07/2026Nelson 𝘦𝘵 𝘢𝘭. (2025) show the cranium, atlas and axis of 𝙀𝙤𝙨𝙦𝙪𝙖𝙡𝙤𝙙𝙤𝙣 𝙡𝙖𝙣𝙜𝙚𝙬𝙞𝙚𝙨𝙘𝙝𝙚𝙞, revealing features linked to feeding behaviour: an enlarged temporal fossa, a dorsoventrally tall coronoid process, and a pronounced fossa for jaw‑adductor musculature: buff.ly/43FWxpK #FossilFriday #PaleoSky 0155
Dr James Rule @palaeo-jrule.bsky.social · 17/07/2026Great new paper in Science from @narimanechatar.bsky.social and colleagues on morpho-functional divergences in the carnassial teeth of carnivores! 🦁 🐯 🐺 🦊 🦝 🧪 Check out the thread below! 0112
Reposted by Dr James RuleEric Ekdale @eekdale.bsky.social · 17/07/2026The seminar below is about ears, which makes it inherently interesting. But a seminar about the ears of marine mammals? Bliss! 032
Dr James Rule @palaeo-jrule.bsky.social · 17/07/2026I recorded a seminar for the Royal Society on our study on the Evolution of amphbious hearing in seals 🦭🔊🧪 cassyni.com/events/7cKKw...cassyni.comThe origin and evolution of amphibious hearing in pinnipedsThis seminar outlines our paper published in Proceedings of the Royal Society B: Biological Sciences. Pinnipeds (true seals, eared seals and walruses) are the only mammals that can hear effectively in... 0121
Reposted by Dr James RuleNarimane Chatar @narimanechatar.bsky.social · 16/07/2026Excited to share our latest study highlighted on the cover of @science.org 🥳Combining a 3D dataset representing 250 taxa spanning the whole Cenozoic, 3D modelling & printing and material testing; we deciphered the form-function relationship in the lower 🦷 of mammals www.science.org/doi/10.1126/... 45427
Reposted by Dr James RuleDr James Rule @palaeo-jrule.bsky.social · 15/07/2026Want to know more about the evolution of amphibious hearing in seals? Check out our article in The Conversation! 🦭 🔊 🧪 doi.org/10.64628/AA....doi.orgSeals have a unique superpower in their ears, and we finally know how it evolvedUnlike all other mammals, seals can hear both in the air and underwater. How do they do this? 12511
Reposted by Dr James RuleLisa Whitenack, PhD @whitenacklab.bsky.social · 16/07/2026Excellent thread summing up this neat paper 161
Reposted by Dr James RuleZ. Jack Tseng @tsengzj.bsky.social · 16/07/2026Our newest paper on mammalian dental evolution, out today as the cover article in @science.org, lead by @narimanechatar.bsky.social with a team of fantastic early career scientists!!! 🎉🥳 “Performance trade-offs define a fundamental dental dichotomy in mammals” www.science.org/doi/10.1126/... 411048
Reposted by Dr James RuleChristopher Zobek @czobek.bsky.social · 15/07/2026I’m happy to say the first chapter of my dissertation has just gotten published! Here, we compared the results of two prominent tools for measuring muscle architecture from contrast data, Xfiber and Goodfibes, with some recommendations for each. anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...anatomypubs.onlinelibrary.wiley.comRelative performance of automated fiber‐tracking approaches to <fc>3D</fc> muscle architecture and their utility for comparative biomechanicsMuscle architecture is a key determinant of muscle performance, informing the calculation of functional traits such as force production and excursion distance. Due to its importance in understanding .... 1126
Reposted by Dr James RuleFlorian Ritter @florianritter.bsky.social · 16/07/2026This is such a cool study! Sometimes I feel seals kind of get overlooked next to whales, but they have such unique adaptions to aquatic living 😱🥰 121
Reposted by Dr James Ruletravis-park.bsky.social @travis-park.bsky.social · 16/07/2026If you want an up-to-date summary of whale and dolphin evolution, have a read of my new review paper in @natrevbiodiv.nature.com! I’ve tried to cover as much research as possible in this, so apologies if I’ve missed you! doi.org/10.1038/s443...doi.orgThe evolution and diversification of Cetacea - Nature Reviews BiodiversityCetaceans are a highly diverse and enigmatic group of animals with a well-documented evolutionary history. This Review describes the macroevolutionary and palaeobiological history of Cetacea, from the... 05023
Reposted by Dr James RuleDr. Davey F. Wright ⛏️🦕🧬 @daveyfwright.bsky.social · 15/07/2026This paper is so freakin' cool. The authors use a combination of comparative anatomy, the fossil record, phylogenetic methods, and morphometric analysis to figure out how (and when) seals evolved "amphibious hearing" that uniquely enable them to effectively hear in both air & underwater 26024
Reposted by Dr James RuleNatalie Cooper @nhcooper123.bsky.social · 15/07/2026Really great to see the work @palaeo-jrule.bsky.social did while he was here at @NHM London out. Super cool stuff. 1112
Reposted by Dr James RuleFiorella @fiorella.bsky.social · 16/07/2026What an incredible piece of work!!! Sensory ecology and evolution, microCT AND fossils! What more could a girl ask for!! 🤩🤩🤩 Day made! 162
Reposted by Dr James RuleThe Night Sky @star86above.bsky.social · 16/07/2026🌊This is an outstanding thread to read about evolution of underwater hearing in seals! 121
Reposted by Dr James RuleDr James Rule @palaeo-jrule.bsky.social · 15/07/2026Seals have a superpower: they are the only mammals with amphibious hearing! They hear well both in-air and underwater. My collagues and I have a new study in Proceedings B on the origins and evolution of amphibious hearing in pinnipeds 🦭🔊🧪 doi.org/10.1098/rspb...doi.orgThe origin and evolution of amphibious hearing in pinnipedsAbstract. Pinnipeds (true seals, eared seals and walruses) are the only mammals that can hear effectively in both air and water. How and when they achieved 411544
Reposted by Dr James RuleRyan Bebej @ryanbebej.bsky.social · 15/07/2026A new article I recently wrote for BioLogos was published last night. Its about vestigial structures & why they are compelling evidence for evolution. I include brief discussions of various examples, including the vestigial external acoustic meatus & eardrum of whales. biologos.org/articles/wha...biologos.org 011
Dr James Rule @palaeo-jrule.bsky.social · 15/07/2026Read @travis-park.bsky.social new review paper on Cetacean evolution! 095
Dr James Rule @palaeo-jrule.bsky.social · 15/07/2026Check out the 3D models from our paper (doi.org/10.1098/rspb...). Australian fur seal skfb.ly/pLQpCskfb.lyAustralian fur seal ears - 3D model by Evans EvoMorph Lab (@arevans)Arctocephalus pusillus TMAG A11092 from the Tasmanian Museum and Art Gallery collections. Cavernous tissue of the ear segmented out. Museum Collection: Tasmanian Museum and Art Gallery Registration number: TMAG A11092 Read more in the paper: Rule JP et al. 2026 The origin and evolution of amphibious hearing in pinnipeds. Proc. R. Soc. B 293: 20260178. https://doi.org/10.1098/rspb.2026.0178 Read the Conversation article here - Australian fur seal ears - 3D model by Evans EvoMorph Lab (@arevans) 080
Dr James Rule @palaeo-jrule.bsky.social · 15/07/2026Check out the 3D models from our paper (doi.org/10.1098/rspb...). Leopard seal 🦭 skfb.ly/pLQr9skfb.lyLeopard seal ears - 3D model by Evans EvoMorph Lab (@arevans)Hydrurga leptonyx TMAG A11091 from the Tasmanian Museum and Art Gallery collections. Cavernous tissue of the ear segmented out. Museum Collection: Tasmanian Museum and Art Gallery Registration numbe... 1142
Dr James Rule @palaeo-jrule.bsky.social · 15/07/2026Check out the 3D models from our paper (doi.org/10.1098/rspb...). Southern Elephant seal 🦭 skfb.ly/pLQrXskfb.lySouthern elephant seal ears - 3D model by Evans EvoMorph Lab (@arevans)Mirounga leonina TMAG A11090 from the Tasmanian Museum and Art Gallery collections. Cavernous tissue of the ear segmented out. Museum Collection: Tasmanian Museum and Art Gallery Registration number: TMAG A11090 Read more in the paper: Rule JP et al. 2026 The origin and evolution of amphibious hearing in pinnipeds. Proc. R. Soc. B 293: 20260178. https://doi.org/10.1098/rspb.2026.0178 Read the Conversation article here - Southern elephant seal ears - 3D model by Evans EvoMorph Lab (@arevans) 071
Dr James Rule @palaeo-jrule.bsky.social · 15/07/2026Seals have a superpower: they are the only mammals with amphibious hearing! They hear well both in-air and underwater. My collagues and I have a new study in Proceedings B on the origins and evolution of amphibious hearing in pinnipeds 🦭🔊🧪 doi.org/10.1098/rspb...doi.orgThe origin and evolution of amphibious hearing in pinnipedsAbstract. Pinnipeds (true seals, eared seals and walruses) are the only mammals that can hear effectively in both air and water. How and when they achieved 411544
Reposted by Dr James Rulethe beggars out of here getter @milesklee.bsky.social · 13/07/2026My privilege to share some lovely stories from the science community about what Sam Neill's timeless performance as Dr. Alan Grant in Jurassic Park meant to them—and why it will continue to inspire kids to chase their own discoveries for years to come.wired.comSam Neill Inspired a Generation of ScientistsThe actor, who died at age 78 on Monday, embodied a passionate approach to research and positive masculinity in his role as paleontologist Alan Grant in the 1993 blockbuster Jurassic Park. 232764798
Reposted by Dr James RuleChase Brownstein @chasedbrownstein.bsky.social · 29/06/20261/12 🚨🚨 I am so excited to share chapter 1 of my dissertation, now preprinted here: biorxiv.org/content/10.6... We ask if are their fundamental, shared mechanisms that stop us from inferring the relationship of species and their timescale of divergence #biology #science 15122
Reposted by Dr James RuleEmily Thomas 🦤🏳️🌈 @zhejiang0pterus.bsky.social · 15/06/2026Alpha male 👎 Beachmaster 👍 2397
Reposted by Dr James RuleJason GRIZZLED Bittel @bittelmethis.bsky.social · 10/06/2026🚨ANCIENT WHALE GRAVEYARD🚨 There's a 750-mile stretch of the Indian Ocean that has been home to more than 450 whale skeletons, some of which are recent, and some of which are fossils going back 5 million years! Story by Meghan Bartels @sciam.bsky.social 🧪 www.scientificamerican.com/article/larg...scientificamerican.comLargest whale ‘graveyard’ discovered, with skeletons spanning 5 million yearsThe fossilized remains of more than 450 whales have amassed along a 750-mile-long stretch of the Indian Ocean floor 114149
Reposted by Dr James RuleJo Wolfe, PhD @jopabinia.bsky.social · 10/06/2026Genuine rewrite the textbooks discovery! 🧪🦑 The same team led last year's discovery of even deeper chemosynthetic animal communities. And they are in a crewed submersible, so they actually SAW THE WHALE GRAVEYARD!!! Can't wait for them to keep exploring! 8367134
Reposted by Dr James RuleRobert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 09/06/2026I'M BATMAN! This ridiculous looking harbor seal isn't fighting crime, just fighting dry eyes. Pinnipeds still produce tears, but no longer have a tear duct to drain tear fluid into the nasal passage, so it just kind of leaks out everywhere. Not sure how it made this pattern though 🐬 0234
Reposted by Dr James RuleRobert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 07/06/2026On Friday I took my *luckiest* and *most disgusting* wildlife shot so far: a California sea lion (Z. californianus) puking up a bunch of rocks! 🤮🪨 That's right - many pinnipeds use gastroliths. The gastroliths are in mid-air! 🦖🐬🦑 #nature #photography #sealion 1138493
Reposted by Dr James RuleSerjoscha Evers @sirjoscha.bsky.social · 28/05/2026The coolest paper I’ve been involved with in a while just dropped! 1. we have (plenty) morphological support for turtles+archosaurs. 2. Eunotosaurus is a millerettid stem reptile, no stem turtle. 3. Without clear fossorial precursors, the ecology of shell evolution needs to be revisited (aquatic!?) 0326
Reposted by Dr James Rule Xavier A. Jenkins @semifossorial.bsky.social · 28/05/2026Our paper on turtle origins is finally out in Current Biology, with two major implications for our understanding of reptile evolution 🐢 #Paleontology #Turtles #Evolution www.cell.com/current-biol... 16634173