Sign in

Eric Ekdale

@eekdale.bsky.social
321 followers 292 following 145 posts

I teach Biology at San Diego State University. And I study the ears of dead things. And whales. And mammals in general. And other things paleontological, comparative anatomical, and evolutionarily biological that strike my fancy. Opinions are my own.

PostsRepliesMedia
Reposted by Eric Ekdale
AshPoust @ashpoust.bsky.social · 15h
If you don't know Kenshu Shimada, read this letter anyway. But realize that this is coming from someone who, in addition to being an intellectual heavy hitter, is one of the nicest, best humored people in the sciences. This was not written lightly.
0114
Reposted by Eric Ekdale
BranArtworks|🐳🐬🦭🎨 @branartworks.bsky.social · 16h
Speedpainting of Miophyseter gunmaensis, a new species of physeteroid described from Japan. The specimen consists of a nearly complete skeleton of a young individual, with an estimated length of 3 to 4 m. It lived approximately 16 to 14 million years ago. #paleoart
14313
Reposted by Eric Ekdale
Thomas R. Holtz, Jr. @arctomet.bsky.social · 19h
LETTER: Absolute need to maintain entire ‘collections side’ of Sternberg Museum intact hayspost.com/posts/d21f98...
hayspost.com
LETTER: Absolute need to maintain entire ‘collections side’ of Sternberg Museum intact
Image by Pixabay Dear Dr. Tisa Mason,I am a proud graduate of Fort Hay
02416
Reposted by Eric Ekdale
Stephne Tate @quailtea.bsky.social · 01/10/2026
Steller’s Sea Cow- extinct 1768 <3
5379122
Reposted by Eric Ekdale
Dr. Arun Sethuraman @arunsethuraman.bsky.social · 29/09/2026
Among the many things as Chair, I've been working on celebrating our awesome faculty, staff, and students at @sandiegostate.bsky.social Biology in newsletters. Here're volumes 1 and 2, featuring the labs of @doc-brock.bsky.social and Gretchen Goodbody, the Director of our Coastal & Marine Institute!
1104
Reposted by Eric Ekdale
Professor John R. Hutchinson @johnrhutchinson.bsky.social · 29/09/2026
New paper! Brandon Kilbourne conducted a huge data collection effort for the limb muscle architecture (masses, fascicle lengths, pennation angles; thereby PCSAs) of mustelid mammals. We found conspicuous relationships with morphology and locomotor mode. link.springer.com/article/10.1...
link.springer.com
Muscle architecture in mustelid mammals: anatomical proxies for muscle function and their relation to locomotor habit - BMC Ecology and Evolution
Background Though skeletal adaptations for locomotion in mammals are well documented, possible limb adaptations in terms of muscle architecture have received far less study. Examining mustelid mammals...
33020
Reposted by Eric Ekdale
Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 28/09/2026
I wrote a bit about the two university museums slated for closure. There is *still* time to do something about each! 🧪🦖
coastalpaleo.blogspot.com
A tale of two university museums: there is still time to save the Academy of Natural Sciences of Philadelphia and the Sternberg Museum
September 2026 has been a pretty dispiriting month for American paleontologists. In early September, Drexel University gave a surprise annou...
29771
Reposted by Eric Ekdale
Anthony of the Badlands @mosasaurologist.bsky.social · 29/09/2026
This lines up with what I herd through the rumor mill last week. The decision was already made and they don't care about the backlash, all because the museum didn't make a profit.
2146
Reposted by Eric Ekdale
Thomas Cullen @thomascullen.bsky.social · 28/09/2026
With all the news of museums being closed and/or defunded, I feel the message of our paper on the importance of natural history research (and the collections housing those specimens) is just as relevant (or more) today as it was when it was published. onlinelibrary.wiley.com/doi/full/10....
cover page of the linked paper
3186101
Reposted by Eric Ekdale
Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 27/09/2026
New #watercolor for #seaotterawarenessweek - a sea otter skull stained purple by echinochrome, a result of eating a large number of sea urchins! Based on several specimens found earlier this year by tidepoolers. Watercolor and gouache, 5x4", 2026. ~5 hours. 🦑🦀🐬🧪🐡 #sciart #art #painting
A watercolor painting of a skull and mandible slightly agape showing the completely purple stained bone of a sea otter
05612
Reposted by Eric Ekdale
Danny Anduza @paleontologizing.bsky.social · 25/09/2026
There's a neat video showcasing this, btw
youtu.be
Two Turtle Bones Reunited
YouTube video by Drexel University
12610
Reposted by Eric Ekdale
Fossillocator @fossillocator.bsky.social · 25/09/2026
The holotype of a fossil boa from the Green River formation, Boavus idelmani, was a privately own specimen that was loaned out for study and casting back in 1938. When the owner died in the 1990's, no one thought about it and later no one could find it. Most likely it was tossed in a dumpster.
Cast of the fossil boa
05421
Reposted by Eric Ekdale
Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 25/09/2026
6/ And what I mean by that is this: private collections are rarely maintained by the owner's next of kin after the owner's death, and even if well-documented, there is a heightened probability of data loss near the end of a collector's life. The same is true of museum lifespans. 🦖🧪
1282
Reposted by Eric Ekdale
Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 25/09/2026
#fossilfriday An example of why the ANSP and its collections must be saved. Atlantochelys mortoni, a giant protostegid sea turtle - named in 1849 by Agassiz based on the proximal humerus fragment. In 2012, someone found a large distal humerus that FIT ONTO THE SAME BONE in ANSP collections. 1/ 🦖🧪
The reunited humerus of the gigantic sea turtle Atlantochelys, on display in a museum: you can clearly see the break that happened sometime prior to the 19th century.
18537
Reposted by Eric Ekdale
Peter Cook @pfcook.bsky.social · 24/09/2026
Very cool new work from @magdalenaboch.bsky.social www.biorxiv.org/content/10.6... As one of the world's foremost pinniped enthusiasts (and perhaps THE foremost pinniped brain enthusiast 🤔), I'm VERY ENTHUSIASTIC about this new resource. Some cortical folding species differences of note as well 👇
biorxiv.org
133
Reposted by Eric Ekdale
Rebecca J. Strauch @rjstrauch.bsky.social · 24/09/2026
New pub! Manatees continuously generate and replace their molars. But how do their teeth respond to wear? We examine how occlusal complexity and relief vary across the tooth row. onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
111
Reposted by Eric Ekdale
Andy Farke @andyfarke.bsky.social · 21/09/2026
Some Monday morning thoughts on museum closures, spurred in part by the recent Academy of Natural Sciences, but not necessarily specific to that. <thread>
13020
Reposted by Eric Ekdale
John P. Friel, Ph.D. @friel.bsky.social · 18/09/2026
Voici le crâne de la bête / Behold the skull of the beast. #FossilFriday
Skull of the fossil whale Odobenocetops leptodon on display at the Muséum national d'Histoire naturelle.
24216
Reposted by Eric Ekdale
🍉🌻Carlota Forte🌻🍉Available for hire @corvuserpens.bsky.social · 18/09/2026
This #fossilfriday I give you a paleoart piece I did recently for the PaleoPT congress about the Vandelli Skulls - 4 whale skulls discovered in the Adiça beach in Almada, Lisbon in the 19th century. Above is Adicetus vandelli and A. latus, bottom is Cephalotropis nectus. #Paleoart #SciArt #whales
0278
Reposted by Eric Ekdale
Prof Susie Maidment @tweetisaurus.bsky.social · 18/09/2026
Buckle up guys: I've got a story for you about my recent experience submitting a paper to Scientific Reports, a @natureportfolio.nature.com journal. I certainly won't be submitting there or peer-reviewing for them again, and I suggest you don't either, unless you enjoy your privacy being breached!
13121
Eric Ekdale @eekdale.bsky.social · 17/09/2026
Is it Caturday already? New cat species described using data, in part, from museum collections! www.cell.com/current-biol...
cell.com
Phylogenomics and museomics reveal five distinct species of tiger cats in South America
Lescroart, Nogales-Ascarrunz, et al. demonstrate that the contentious tiger cat species complex consists of five cryptic species. Based on analyses of 38 whole genomes from the Neotropical cat genus Leopardus, including genomes obtained from museum collections, they describe a new species and a new subspecies and elucidate tiger cat evolutionary history.
021
Reposted by Eric Ekdale
Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 16/09/2026
A squirrel eye's view of Lake Tahoe - I managed to capture the reflection of myself, @tetrameryx.bsky.social & my brother, a pine tree, Lake Tahoe, and the clouded sky in the eye of this California ground squirrel (Otospermophilus beecheyi) over Labor Day weekend 📸 #wildlife #wildlifephotography
 A closeup photograph of the eyeball of a California ground squirrel (Otospermophilus beecheyi), showing the reflection of myself, my brother, and my wife along with part of a cabin and a pine tree along with Lake Tahoe and the clouded sky. This particular squirrel had chewed a hole into the deck of a state park cabin and was peeking out - you can see the post holding up the roof over the deck in the middle of the reflection.
 A closeup photograph of the head and paws of a California ground squirrel (Otospermophilus beecheyi), peeking out of a hole in a wooden deck. This particular squirrel had chewed a hole into the deck of a state park cabin and was peeking out. A closeup photograph of the eyeball of a California ground squirrel (Otospermophilus beecheyi), showing the reflection of myself, my brother, and my wife along with part of a cabin and a pine tree along with Lake Tahoe and the clouded sky. This particular squirrel had chewed a hole into the deck of a state park cabin and was peeking out - you can see the post holding up the roof over the deck in the middle of the reflection.
36420
Reposted by Eric Ekdale
Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 15/09/2026
New #artwork! #watercolor illustration of the 3 meter long block containing the holotype skull, jaws, and vertebrae of the 26 myo eomysticetid baleen whale Tokarahia kauaeroa (Kokoamu Greensand, New Zealand), which I named in 2015 for my PhD research. Large for me, ~20x8"; ~20-24 hours. 🐡🦖🐬 #sciart
A watercolor painting of a fossil whale skull with mandibles in a massive block of greenish gray sand. The skull is incomplete, and the left mandible is in life position; the right mandible is flipped 180. A cluster of vertebrae are present near the braincase. The bones are occasionally stained red with iron oxide.
0406
Reposted by Eric Ekdale
Thomas R. Holtz, Jr. @arctomet.bsky.social · 12/09/2026
washingtonsun.com/climate-envi...
washingtonsun.com
How Trump Unleashed an Existential Fight Over America's Dinosaurs
In Utah, Trump resurfaced a decades-long dispute over how to protect some of the country’s crown jewels.
096
Reposted by Eric Ekdale
Kelly Hereid @kellyhereid.bsky.social · 11/09/2026
AI can be a powerful and useful tool, but the point of science, math, arts, and humanities is to drive greater human creativity and understanding, not just to spit out an answer. Important letter from the world of mathematics.
0237
Reposted by Eric Ekdale
Kate :verigold: @dolphinseeker.mstdn.social.ap.brid.gy · 11/09/2026
ETSU study rewrites history of ancient marine mammal news.etsu.edu/articles/etsu-study-r… 🦛 #MarineMammals #MarineLife #MarineBiology #FossilFriday #Prehistoric #Evolution #Science
news.etsu.edu
ETSU study rewrites history of ancient marine mammal - ETSU News
An ETSU-led study shows how a fossil discovered decades ago helped rewrite the history of an extinct mammal that once inhabited coastlines across the Pacific.
067
Reposted by Eric Ekdale
haversack @hsack121.bsky.social · 10/09/2026
This is way past due, leave the whales alone.. Iceland to propose whaling ban, leaving Norway and Japan isolated www.nbcnews.com/world/europe...
nbcnews.com
Iceland to propose whaling ban, leaving Norway and Japan isolated
Fin whales, the primary target of Iceland’s whaling industry, are classified ⁠by the International Union for Conservation of Nature as vulnerable.
14545241369
Eric Ekdale @eekdale.bsky.social · 11/09/2026
www.theguardian.com/us-news/2026...
theguardian.com
Want to borrow a dinosaur fossil? Try California’s one-of-a-kind taxidermy lending library
A natural history museum lets residents take home 1,400 specimens, from bobcats and beetles to snakes in jars
021
Reposted by Eric Ekdale
beetle moses @beetlemoses.bsky.social · 10/09/2026
Two panel comic. Panel 1: a whale fall lies at the bottom of the ocean. The bones are covered in a variety of bottom feeders and ocean critters. Panel 2: closer up, the group of bottom feeders are holding red solo cups and chatting with each other. Among the group is a tiger prawn, who thinks to himself, “I needed this…”
40107681714
Reposted by Eric Ekdale
Dr James Rule @palaeo-jrule.bsky.social · 10/09/2026
New 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.org
Quantifying the Morphological Differences Between Fur Seals and Sea Lions
The 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 Eric Ekdale
Earth Archives @eartharchives.org · 09/09/2026
DNA from a 190-year-old museum specimen has confirmed a distinct Himalayan pangolin species and could help trace illegally traded scales back to their source. Image credit: Tulshi Laxmi Suwal. www.sciencedaily.com/releases/202... #fossils #paleontology
164
Reposted by Eric Ekdale
Marshal Hedin @mhedin.bsky.social · 08/09/2026
with my wonderful colleague @monroderik.bsky.social, just published "What a Long Strange Trip It's Been: Miocene Salinian Block Migration and the Biogeography of Megahexura Spiders" in J BioG dx.doi.org/10.1111/jbi.... novel CA biogeographic story! not OA ... please contact me if you need a copy
086
Reposted by Eric Ekdale
Society of Vertebrate Paleontology @societyofvertpaleo.bsky.social · 08/09/2026
The Society of Vertebrate Paleontology stands with the Academy of Natural Sciences (ANSP) staff, and preservation of the ANSP Museum. SVP urges our member community and anyone who enjoys and supports the natural sciences to speak up on behalf of the ANSP and their staff! #SaveTheAcademy
06034
Reposted by Eric Ekdale
Dr. Ornella Bertrand @ornellabertrand.bsky.social · 05/09/2026
New paper 🚨 on the brain endocast of Leptictis based on virtual endocasts! With Carl Van Gent, John Wible @stevebrusatte.bsky.social and Lawiza Kamran 🧠😍 www.app.pan.pl/article/item...
app.pan.pl
Revisiting the brain anatomy of the early Oligocene eutherian mammal <em> Leptictis</em> based on virtual endocasts - Acta Palaeontologica Polonica
042
Reposted by Eric Ekdale
Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 04/09/2026
#fossilfriday A couple of 30 myo fossil whale molars exposed in the remnant of a concretion I've been etching out for the past three months. This is from a tiny early toothed baleen whale, possibly Fucaia buelli; Makah Formation, WA. Provided for study by Jim Goedert! 🐋🦖🧪 #whaleontology
A two-part image showing a pair of chocolate brown, low crowned molars bearing a central cusp and three accessory cusps on each side, protruding from gray sandstone next to a ring-shaped bone. On the right, the fossil is submerged in gross-looking acid giving it a yellowy brown hue.
0155
Reposted by Eric Ekdale
Society of Vertebrate Paleontology @societyofvertpaleo.bsky.social · 03/09/2026
The Society of Vertebrate Paleontology (SVP) has joined a series of co-plaintiffs and is suing the Trump administration for shrinking Bears Ears National Monument.
1168
Reposted by Eric Ekdale
Andy Farke @andyfarke.bsky.social · 03/09/2026
Very cool research! Please remember that these kinds of studies do not happen without the non-glamorous, hard-to-publish, often-downplayed work of collecting basic natural history data! Basic science underpins *all* science!
093
Eric Ekdale @eekdale.bsky.social · 03/09/2026
Cool new research from my SDSU colleagues @hippieherper.bsky.social and @doc-brock.bsky.social You all should check it out! onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Tolerating the Anthropocene: Squamate Life History Shapes Patterns of Presence in Human Modified Landscapes
We found that many squamates exhibit moderate tolerance of human modification, with wider ranging, larger bodied, faster reproducing species showing the highest tolerance. Intolerance to modification...
081
Reposted by Eric Ekdale
Skye McDavid @skyemcdavid.com · 03/09/2026
SVP Sues the Trump Administration for Shrinking Bears Ears National Monument Now THIS is what I want my membership dues going towards @societyofvertpaleo.bsky.social vertpaleo.org/svp-sues-the...
vertpaleo.org
SVP Sues the Trump Administration for Shrinking Bears Ears National Monument – Society of Vertebrate Paleontology
16232
Reposted by Eric Ekdale
San Diego Zoo Wildlife Alliance @sandiegozoo.bsky.social · 31/08/2026
Where there's a quill, there's a way ✍️
124456
Reposted by Eric Ekdale
Journal of Vertebrate Paleontology @jvertpaleo.bsky.social · 28/08/2026
🚨New Pub!🚨A new species of Miophyseter (Cetacea, Odontoceti, Physeteroidea) from the Miocene of Japan🐳🇯🇵by Kimura & Hasegawa www.tandfonline.com/doi/full/10....
tandfonline.com
A new species of Miophyseter (Cetacea, Odontoceti, Physeteroidea) from the Miocene of Japan
Three fossil physeteroids have been recovered from the Lower to Middle Miocene of Japan. Here, we describe and diagnose these specimens as a new species of the genus Miophyseter, M. gunmaensis, sp....
032
Reposted by Eric Ekdale
Andy Farke @andyfarke.bsky.social · 28/08/2026
Your big data is only a big data set because a whole bunch of people did the insignificant, unworthy of your time, not important enough to publish, effort to build & maintain collections over the years, which you then scooped up into your dataset for a proper "big picture" study. <6/n>
414729
Reposted by Eric Ekdale
Andy Farke @andyfarke.bsky.social · 28/08/2026
You can lament gaps in the data all you want, but those gaps will only get filled with basic science. That means the unglamorous, not likely to be in a high-IF journal (or published anywhere), research such as developing regionally focused collections of "uninteresting" fossil assemblages. <3/n>
16911
Reposted by Eric Ekdale
Stephen Heard @stephenbheard.bsky.social · 25/08/2026
That new species of monkey last month was a great news story, but is species discovery really like that? And why museums are so important: scientistseessquirre... 🌍🧪
scientistseessquirrel.wordpress.com
New species from the rainforest vs. new species from museum drawers
Last month, the announcement of a new-to-science monkey species from the Congolese rain forest made a bit of a splash. It’s Colobus congoensis, formally, and less formally and based on a local name…
01610
Reposted by Eric Ekdale
Starre Vartan @starrevartan.bsky.social · 19/08/2026
Riddle Me This: How might cougars—just cougaring around as they do—prevent human deaths? -->When cougars are active in a landscape, expected deer-vehicle collisions fall by 76%, a study shows. My latest for @mongabay.com on how cougars are likely saving humans: news.mongabay.com/2026/08/coug...
news.mongabay.com
Cougars cut deadly vehicle-deer collisions in the U.S. by up to 76%, study shows
If you’re a black-tailed deer on the Olympic Peninsula in the U.S. state of Washington, you’re always surrounded by friends and family. You are free-range, with abundant food to forage in familiar woo...
13214
Reposted by Eric Ekdale
bookswain.bsky.social @bookswain.bsky.social · 08/01/2026
“An atmosphere of that gas would give to our earth a high temperature” An alumnus of the School Emma Willard founded (☝️), The Troy Female Seminary, was Eunice Newton Foote who in 1856 published the first ever scientific paper to show atmospheric CO2 absorbed heat causing a greenhouse effect. 🧪 🌎
A page from a scientific paper titled Circumstances affecting the Heat of the Sun published in The American Journal of Science in 1856.









#WomeninSTEM #womeninscience #climatechange #climate #climatecrisis #histsci
0113
Reposted by Eric Ekdale
Robert 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. 🦖🐬
An image with a black background, a 10 mm scale bar, and a large, triangular and cuspate carnivore tooth with two massive long roots; the enamel is a chocolate brown color and the roots are a pale tan.
0194
Reposted by Eric Ekdale
Nature Portfolio @natureportfolio.nature.com · 18/08/2026
Research in Nature Communications outlines hidden structures within the narwhal tusk that shows how the tusk is able to remain so straight. The findings suggest that the tusk’s distinctive left-handed spiral arises from opposing helical structures at microscopic scale. go.nature.com/4x74SGP 🧪
A close up of a narwhals head showing the tusk protruding from the mouth 

Credit: Mads Peter Heide-Jørgensen Narwhals at the surface displaying their tusks. 

Credit: Mads Peter Heide-Jørgensen
03011
Reposted by Eric Ekdale
Yaroslav Barsukov #NoToWar #НетВойне @barsukov.com · 17/08/2026
AI RANT (cont’d) The most troubling thing about this is, Originality AI is apparently used by agents & publishers alike. Dear agents and publishers, PLEASE DO NOT FORGET: AI “detectors” are slop machines same as the slop machines whose output they purport to analyze. 🧵4/5
61565272
Reposted by Eric Ekdale
Yaroslav Barsukov #NoToWar #НетВойне @barsukov.com · 17/08/2026
AI RANT Following the cancellation of three major debut book deals over AI suspicions, I decided to put my own (needless to say, 100% human-written) prose to the test. My detector of choice was Originality AI, and the results proved to be jarring, to say the least. 🧵1/5
3924841148