Jennifer Botha

@jenniferbotha.bsky.social

Vertebrate palaeontologist focusing on mass extinctions and life history responses to these events

We examined how mammal ancestor brain size changed through the end-Permian extinction and found it barely changed! Brain evolution may have been put on hold for millions of years until ecosystems recovered. doi.org/10.1038/s415...

Evolutionary stasis in synapsid encephalization during the end-permian mass extinction - Scientific Reports

Scientific Reports - Evolutionary stasis in synapsid encephalization during the end-permian mass extinction

doi.org

First-Ever Egg of a Mammal Ancestor Discovered! Research by myself, Julien Benoit (Wits) and Vincent Fernandez (ESRF) presents the first-ever egg of the therapsid Lystrosaurus, finally answering the question: Did the ancestors of mammals lay eggs? Yes, they did! doi.org/10.1371/jour...

The first non-mammalian synapsid embryo from the Triassic of South Africa

Oviparity was likely the plesiomorphic reproductive condition for non-mammalian Synapsida, the stem-mammal group. Yet, despite nearly two centuries of research, no definitive fossil eggs of late Palae...

doi.org

Enele Twala and I have just returned from a trip to the ESRF in France. Enele is studying squamate bone histology and Roger Benson and Zoe Kulik from the AMNH and I are studying the osteohistology of basal amniotes. We obtained almost 250 scans for this project, and we can't wait to study the scans!

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Here’s some photos from our latest field trip – with Adam Huttenlocker, Ken Angielczyk, Pia Viglietti, Claire Browning and Roger Smith. This is our second field season collecting rock samples for radiometrically dating the Permo-Triassic boundary in South Africa and so far, we have great results.

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Hi! I've just presented at the International Symposium on Palaeohistology on sauropodomorph growth strategies across the end-Triassic mass extinction. Our first observation is that all sauropodomorphs and sauropodiformes exhibit growth marks from early ontogeny, contrary to Sauropoda. #sauropods

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