Thomas R. Holtz, Jr.
@arctomet
Tyrannosaur Expert; Dinosaur Paleontologist; University of Maryland Geology Faculty; Director of the College Park Scholars-Science & Global Change Program; Science Author; Cat Dad; 🦖🦕
Getting ready for the "dig" part of the #DinoShindig at the Carter County Museum
#FossilFriday Triceratops dentary with tyrannosaur toothmarks at the Carter County Museum #DinoShindig
#FossilFriday #SurvivingEarth The Ordovician armored fish Sacabambaspis (in the collections of the Department of Geology, Tallinn University of Technology)
#FossilFriday #SurvivingEarth The boomerang-head lepospondyl Diplocaulus @denvermuseumns.bsky.social
#FossilFriday Rudist reef in Oman (from Schumann & Steuber 1997) (reused from a few years ago, in honor of #SurvivingEarth)
#FossilFriday In honor of #SurvivingEarth, the stem-primate Plesiadapis @amnh.org
#FossilFriday In honor of #SurvivingEarth, the giant gorgonopsian Inostrancevia
#FossilFriday The Cretaceous coelacanth Mawsonia @ummnh.bsky.social
#FossilFriday Saurolophus (with assorted other iguanodontians around it) at the Fukui Dinosaur Museum
To be fair, cladistics owes a lot to historical linguistics/philology, which was part of JRRT's professional expertise. Although, TBF, there are a lot of "not-A" type groups ("paraphyletic", in a sense) among the Elvish kindreds:
#FossilFriday A whole mess of mammoths at The Mammoth Site, South Dakota
#FossilFriday The sail-backed herbivorous synapsid Edaphosaurus @ummnh.bsky.social
That talking point, though is NOT supported. Indeed, as their own chart shows, Early Permian pO2 levels are at their maximum, and mid-Permian is comparably high to the Pennsylvanian.
#FossilFriday For May Day, it's Maiasaura! New mount at the @museumoftherockies.bsky.social
#FossilFriday The long-snouted stem-whale Kutchicetus, at the National Museum of Nature and Science in Japan
#FossilFriday The leptoceratopsid Prenoceratops at the Children's Museum of Indianapolis
#FossilFriday Hadrosaurus foulkii skeleton at the Academy of Natural Sciences in Philadelphia
#ArtemisII Lunar flyby today. If you get a chance, take a look up at the Moon today. Somewhere in your field of vision are four fellow human beings.