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meaning: "rough turtle"
Named By: Rainer Zangerl in 1953
Time Period: Early Cretaceous-Late Cretaceous,[1][2] 120-70 Ma
Location: USA - Alabama - Selma Formation
Size: Around 30 centimetres long
Diet: Omnivore
Fossil(s): At least two specimens
Classification: | Chordata | Reptilia | Testudines | Cryptodira | Protostegidae | Chelospharginae |

Protostegidae is a family of extinct marine turtles that lived during the Cretaceous period. The family includes some of the largest sea turtles that ever existed. The largest, Archelon, had a head one metre (39 in) long. Like most sea turtles, they had flattened bodies and flippers for front appendages; protostegids had minimal shells like leatherback turtles of modern times.

Read more about Calcarichelys at Wikipedia
PaleoCodex is a weekend hack by Saurav Mohapatra