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Curator’s Choice
Form and Function:
A Tribute to Adolf Seilacher
Rudists as Bivalvian Dinosaurs
Toucasia patagiata (White)
Early Cretaceous, Texas
YPM.35763
| Toucasia, an early rudist, lived attached to the sea floor in thickets. The larger valve grew in an elongated spiral form. In this Yale Peabody Museum specimen the attached valve is below, and the free valve (or “lid”) at the top. |