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Showing results for tags 'endocasts'.
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Your Middle Ear Evolved From Fish Gills, Rare Chinese Fossils Prove Stephen Lunz, IFL Science, June 20, 2022 The open access paper is: Gai, Z., Zhu, M., Ahlberg, P.E. and Donoghue, P.C., 2022. The evolution of the spiracular region from jawless fishes to tetrapods. Frontiers in Ecology and Evolution. vol. 19, May 22, 2022 Yours, Paul H.
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Mammal Brain Endocasts from the White River Badlands of South Dakota
Nimravis posted a topic in General Fossil Discussion
I was looking at some of my collection yesterday and dextrose take pictures of my better mammal brain endocasts from the White River Badlands of South Dakota. The first piece is exposed on a partial skull of an Oreodont. This next piece is my favorite and I believe it is from an Oreodont. These other pieces I can only guess, but I would also think Oreodont. This small one appears to be from a rabbit. This last one was ID’d as coming from a Hesperocyon, but cannot confirm that. -
By measuring endocasts of theropods, ancient and modern birds these researchers traced brain evolution in 2000 different species. Decrease in body size with same size brain led to increased brain:body ratio in modern birds after the K-T event. Work done at Stonybrook and the Bruce museum. https://phys.org/news/2020-04-history-brain-evolution-tyrannosaurs-modern.html