Dr. Dan KillamSep 29, 2023
Today for #FlatClamFriday Platyceramus cycloides (prev. P. platinus), the biggest, flattest clams that ever lived. During the Cretaceous these meter-wide XXXL pizzas of the sea thrived in in a variety of habitats, particularly at the bottom of the Cretaceous Interior Seaway that covered much of N. America. Exceptional specimens have been found approaching 3 m in size! They hosted vibrant collections of symbiotic fish, bivalves, shrimp and other creatures in their shells! #clamFacts
Show threadDr. Dan KillamSep 30, 2023
they really are thought to have reached 3 meters aka 10 feet (in rare cases)! astoundingly big clams (most reached about 1 m). artist source: https://twitter.com/FabioAleRomero/status/1472242914252185612
Fabio Alejandro on X

A god oyster Platyceramus represents the biggest bivalve ever, this flat wide square shaped Inoceramid lived on the seabed of the Western Interior Seaway at depths of 300 m, being host of some of the surrounding fauna which were sometimes preserved inside the shell

X (formerly Twitter)
Show threadSteve WangSep 30, 2023
@dantheclamman wow, how big is the actual animal inside of the shell is 3 m across?
Show threadSteve Wang
@dantheclamman
*if, not of
Sep 30, 2023 at 1:57pmWeb