User:Abyssal/Prehistory of South America/DYK/10

< User:Abyssal | Prehistory of South America | DYK

...that ostracoderms are the earliest known vertebrate animals?

... that according to the National Geographic Society, Peruvian archaeologist Walter Alva found the richest unlooted pre-Columbian tomb in the Western Hemisphere?

... that members of the extinct bivalve genus Hemiconcavodonta are unique in the subfamily Concavodontinae in that their teeth point in two directions?

... that the Ordovician age bivalve Villicumia has overlapping teeth seen in few other bivalves?

... that the Jurassic conifer Araucaria mirabilis (cone pictured) of Argentina may have been a primary food for sauropods?

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