User:Abyssal/Prehistory of North America/DYK/25

... that members of the extinct bivalve family Bakevelliidae have shells made from rectangular calcium prisms and mother of pearl?
... that the early dinosaur-like animal Lagerpeton was only 70 cm (28 in) long?
... that leaves of the fossil maple Acer palaeorufinerve resemble the living redvein maple?
... that Paul S. Martin and Paul Sidney Martin both worked as anthropologists at the University of Arizona in the early 1970s?
... that Protostephanus was the first extinct wasp genus in the family Stephanidae to be described from a fossil?

... that archaeologists found pottery shards at the Bowen site linking it to the Oliver Phase of woodland culture development?
... that a new twin pyramid complex (east pyramid pictured) was built at the Maya city of Tikal every twenty years to celebrate the end of a Maya calendrical cycle?
... that highlights from the history of ceratopsian research include the discovery of the iconic Triceratops (skeletal mount pictured), spike-frilled Styracosaurus, and vast bonebeds preserving thousands of Centrosaurus?
... that the extinct crab Metacarcinus starri from Washington state is related to the graceful rock crab?
... that the 500-million-year-old Cambrian predator Hurdia was thought to be a number of separate organisms for 100 years, until the complete animal was reconstructed in March 2009?