Last night a thought occurred to me, and I wrote to Matt: If birds had gone extinct 66 Mya along with all the other dinosaurs, would it ever have occurred to us that they had flow-through lungs?

For those following the saga of Oculudentavis (the beautiful tiny dinosaur preserved in amber that turned out to be a lizard), three more things.

Since we wrote about the putative tiny bird Oculudentavis (Xing et al. 2020) last time, things have become rather weirder.

Back in March, Nature published “Hummingbird-sized dinosaur from the Cretaceous period of Myanmar” by Xing et al. (2020), which described and named a tiny putative bird that was preserved in amber from Myanmar (formerly Burma). It’s a pretty spectacular find.

Someone on Facebook asked whether sauropods had subcutaneous fat, and by the time my answer hit five paragraphs I thought, “The merciful thing to do here is blog this and link to it.” So here are some things to keep in mind regarding the integumentary systems of sauropods.

A while back, I mentioned that I’d written and released VertFigure, a program for drawing schematic comparative diagrams of vertebral columns.

Gotta say, I did not see that coming. Today sees the publication of a new paper by Emma Schachner and colleagues in Nature, documenting for the first time that unidirectional, flow-through breathing–previously only known in birds and crocodilians–happens in freakin’ monitor lizards.

Another shot from my visit last month to the Museum of Osteology in Oklahoma City: the business end of a tegu ( Tupinambis ). Lots of cool stuff in this pic: heterodont dentition, wacky sclerotic ossicles, and some sweet neurovascular foramina along the maxilla. Someone should knock out a shrink-wrapped life restoration, a la All Todays .