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The latest Nature reveals a new primitive mammal fossil collected in the Mesozoic strata of the Yan mountains of China. It's small and unprepossessing, but it has at least two noteworthy novelties, and first among them is that it represents another step in the transition from the reptilian to the…
Tyrannosaurid Skeletal Design First Evolved at Small Body Size:
Tyrannosaurid dinosaurs comprised nearly all large-bodied predators (>2.5 tons) on northern continents during the Late Cretaceous. We show that their most conspicuous functional specializations--a proportionately large skull,…
You wouldn't know it from Tet Zoo's content, but for many, many months now I've been working continually on ichthyosaurs, the 'fish lizards' of the Mesozoic. I'm not ready to talk about the project yet, but will do at some stage. An awful lot has happened on ichthyosaurs since the late 1990s,…
IDolator David Tyler wants to make something clear about a new fossil, Yanoconodon:
The first point to make is that this is not an example of a transitional fossil. …
Rather, the new fossil has been hailed as illustrating an important evolutionary transition: detachment of the middle ear bones from…