Thomas R. Holtz, Jr.

Diversity and function of the anterior dentitions in fossil and extant mammals - Palaeobiodiversity and Palaeoenvironments This paper reviews the morphological diversity of the anterior dentition (AD - incisors and canines) in fossil and extant mammals. The great diversity of the mammalian anterior dentition is due to mos...

von Koenigswald, W. Diversity and function of the anterior dentitions in fossil and extant mammals. Palaeobio Palaeoenv (2026). doi.org/10.1007/s125...

Current citation style:
MacFadden, B. J. et al. (2026). AI and paleontology: effects of vertebrate fossil sample size on machine learning image classification. Paleobiology, 1–17. doi: 10.1017/pab.2025.10084

www.cambridge.org/core/journal...

Uniqueness and predictability in evolution and the history of mollusks | PNAS Evolution is a historical process whose trajectories are determined in part by the introduction of new phenotypes. Although most phenotypes have ev...

www.pnas.org/doi/10.1073/...

theoatmeal.com/comics/naked...

www.legacy.com/us/obituarie...

US-Israeli strike on girls' school kills at least 85 students, Iran's judiciary says At least 85 students have been killed in US-Israeli strikes that hit an Iranian girls' school in Hormozgan province, Iran's judiciary said on Saturday. Washington has not commented on the reported str...

We killed 85 schoolgirls. We are not the good guys.

Dental Formulas

The ultimate in niche comic strips: mathematicians encounter mammalian dental formulae:

xkcd.com/3213/

Costa, F. Dacentrurine Stegosaurs in North America: New Occurrences from the Upper Jurassic of USA (Morrison Formation). Diversity 2026, 18, 143. doi.org/10.3390/d180...

Yeah, the heavy footfall in Jurassic Park was always cinema, not science. Large animals really need cushioned footfalls, so they evolve adaptations to reduce the "thud".

Huh. He literally did the speech.

Buffetaut, E. (2026). The Cretaceous Dinosaur Record from Normandy (NW France): A Review. Fossil Studies, 4(1), 5. doi.org/10.3390/foss...

www.mdpi.com/3745578

Coelophysis jumping (for joy?)!

A Maine student is upending how the world thinks about the T. rex The College of the Atlantic student used biomechanical modeling to show the predatory dinosaur walked on its tiptoes like an 8-ton bird.

www.pressherald.com/2026/02/27/a...

I continue to be fascinated by the phenomenon whereby an expert engages with any of the LLMs on their field of expertise and is instantly horrified by the wrong answers, and then goes on to use it for things they are not experts in as though it won’t be just as bad for those.

the fact the president of the united states is even thinking about asserting emergency powers to disrupt an election - just a few years after he incited an armed coup attempt - should be the top issue. but the media mostly shrugs and the opposition doesnt focus on it.

#FossilFriday
Mongolian alvarezsaurid, Jaculinykus showing a resting posture, which is probably similar to that of an novel specimen of Alnasherti, published in this week!

The tale of Alnashetri cerropoliciensis and body size evolution in alvarezsaurids Alvarezsauridae represents a distinctive lineage of small-bodied theropod dinosaurs, mainly known from the Jurassic to Cretaceous period of Asia and South America. Initially interpreted as flightle…

The tale of Alnashetri cerropoliciensis and body size evolution in alvarezsaurids paleonerdish.wordpress.com/2026/02/26/t...

Skeleton in right lateral view of the early Late Jurassic metriacanthosaurid dinosaur Sinraptor dongi

#FossilFriday The metriacanthosaurid Sinraptor dongi

A silly simple pen drawing of a paper-clip-shaped ammonite with eyes like those of Clippy the office assistant. A speech bubble reads "It looks like you're evolving. Would you like help?"

Yes yes yes

Scientists compared dinosaurs to mammals for decades but missed this key difference Baby dinosaurs weren’t coddled like lion cubs or elephant calves—they were more like prehistoric latchkey kids. New research suggests that young dinosaurs quickly struck out on their own, forming kid-...

www.sciencedaily.com/releases/202...

Morphological disparity across the K-Pg boundary in mollusk shells: A theoretical morphology approach Theoretical morphospace as a tool for understanding evolutionary changes in molluscan shell form is applied to analysis of biodiversity change across the Cretaceous-Paleogene extinction event. Althoug...

journals.plos.org/plosone/arti...

Exhibit writing/development gig for folks around NYC: careers.amnh.org/postings/4737

Skeletal morphology of an early ichthyopterygian, cf. Utatsusaurus hataii, from Japan with an emphasis on CT scan data of the skull The Early Triassic Utatsusaurus hataii is one of the earliest ichthyopterygians and shows numerous plesiomorphic features. An ichthyopterygian specimen, NSM-PV-20028, from the Osawa Formation in Mi...

Skeletal morphology of an early ichthyopterygian, cf. Utatsusaurus hataii, from Japan with an emphasis on CT scan data of the skull: Journal of Vertebrate Paleontology: Vol 0, No 0 - Get Access www.tandfonline.com/doi/full/10....

Early synapsids from the Cisuralian (lower Permian) Pedra de Fogo Formation, Parnaíba Basin, Brazil: the first definitive South American “pelycosaurs” The paleotropics of Euramerica provide nearly our entire picture of Permo–Carboniferous terrestrial tetrapod evolution. The geographic sampling bias inherent in this record obscures important event...

Early synapsids from the Cisuralian (lower Permian) Pedra de Fogo Formation, Parnaíba Basin, Brazil: the first definitive South American “pelycosaurs”: Journal of Vertebrate Paleontology: Vol 0, No 0 - Get Access www.tandfonline.com/doi/full/10....

Earliest direct evidence of trophic interactions between terrestrial apex predators and large herbivores - Scientific Reports Trophic interactions between large predators and herbivores are unknown in the fossil record of Permo-Carboniferous tetrapods at a time when these members of the terrestrial vertebrate communities mak...

Young, J.M., Maho, T. & Reisz, R.R. Earliest direct evidence of trophic interactions between terrestrial apex predators and large herbivores. Sci Rep 16, 6977 (2026). doi.org/10.1038/s415...

Surprising partner preference found in matings between Neanderthals and modern humans Male Neanderthals tended to pair up with female modern humans, but whether intercourse was consensual is unclear

Surprising partner preference found in matings between Neanderthals and modern humans | Science | AAAS www.science.org/content/arti...

Interbreeding between Neanderthals and modern humans was strongly sex biased Sex biases in admixture and other demographic processes are recurrent features throughout human evolution. For admixture between Neanderthals and anatomically modern humans (AMHs), sex bias has been p...

Interbreeding between Neanderthals and modern humans was strongly sex biased | Science www.science.org/doi/10.1126/...

Art Comission by James Stryker Colors suggested by @cascoclauda :3

Outmuscled

(Argentinosaurus & co.)

The ontogenetically youngest known pachycephalosaur (Dinosauria: Ornithischia) postcranium Pachycephalosaurian dinosaurs are represented in the fossil record primarily by their taphonomically resistant frontoparietal domes that developed fully only at maturity. Consequently, the postcran...

Full article: The ontogenetically youngest known pachycephalosaur (Dinosauria: Ornithischia) postcranium www.tandfonline.com/doi/full/10....

YouTube video by SiouxsieBansheesVEVO Siouxsie And The Banshees - Cities In Dust (Official Music Video)

#Geol204playlist For climate crises and the PETM youtu.be/wsOHvP1XnRg?...