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The North American least shrew species, Cryptotis parva, then arose from the genus Cryptotis. [6] The primitive features of Cryptotis parva suggest its ancient origins. The zygomatic arches are missing in the skull, which are present in most mammals even of
The genus Cryptotis is a group of relatively small shrews with short ears, which are usually not visible, and short tails, commonly called small-eared shrews. They have 30 teeth and are members of the red-toothed shrew subfamily.
Fossilized skull of the Miocene pronghorn Cosoryx †Cosoryx †Cosoryx furcatus; Crotalus †Crotalus viridis †Cryptantha †Cryptantha auriculata; Cryptotis †Cryptotis adamsi †Cryptotis kansasensis – type locality for species †Cryptotis meadensis – type locality for species †Cryptotis parva; Cynomys
Cryptotis †Cryptotis parva; Ctenoides †Ctenoides bastropensis †Cubitostrea †Cubitostrea divaricata †Cubitostrea lisbonensis †Cubitostrea petropolitana †Cubitostrea sanctiaugustini †Cubitostrea sellaeformis †Cubitostrea smithvillensis; Shell of a Cucullaea, or false ark shell Cucullaea †Cucullaea kaufmanensis †Cucullaea ...
Cryptotis. A living Cryptotis parva, or North American least shrew †Cryptotis parva †Cryrenoida †Cryrenoida floridana; Ctena †Ctena chipolana †Ctena erosa †Ctena leonensis †Ctena magnoliana †Ctena orbiculata †Ctena scurra †Ctena speciosa; Ctenoides †Ctenoides floridana †Ctenoides scabra †Cubitostrea †Cubitostrea ...
Fossilized skull of the Late Cretaceous plesiosaur Megacephalosaurus †Megacephalosaurus – type locality for genus †Megacephalosaurus eulerti – type locality for species; Membranipora †Modiolus †Niobrarasaurus †Niobrarasaurus coleii – type locality for species †Niobrarateuthis †Niobrarateuthis bonneri – type locality for ...
Fossilized skull of the Eocene tapir-like mammal Homogalax †Homogalax – or unidentified related form; Hydrobia †Hydrobia truncata; Hydroides; Hyla †Hyla crucifer – or unidentified comparable form; Hylocichla †Hyopsodus – or unidentified comparable form †Hyposaurus – or unidentified comparable form †Icterus – or ...
Illustration of a fossilized skull of the Permian primitive reptile Bolosaurus †Bolosaurus – type locality for genus †Bolosaurus major – type locality for species †Bolosaurus striatus – type locality for species †Brachydectes †Brachyphyllum – tentative report †Branneroceras †Broiliellus – type locality for genus