Temperocastor, Korth, 2008

Korth, William W., 2008, Cranial morphology, systematics and succession of beavers from the middle Miocene Valentine Formation of Nebraska, USA, Acta Palaeontologica Polonica 53 (2), pp. 169-182 : 178

publication ID

https://doi.org/ 10.4202/app.2008.0201

persistent identifier

https://treatment.plazi.org/id/03DA87E5-FFC5-FF9F-FCE4-7216FB3AF8A9

treatment provided by

Felipe

scientific name

Temperocastor
status

 

Genus Temperocastor nov.

Type species: Eucastor valentinensis Stout, 1999 , by monotypy; see below.

Derivation of the name: From Latin, tempero, blend or mix in due proportion; and castor, beaver.

Diagnosis.—Small castoroidine (smaller than Eucastor tortus ); cheek teeth mesodont and rooted, similar in crown−height to species of Eucastor and Monosaulax . Primitive dental characters as in Monosaulax : lingual striids on premolars minute to absent on unworn specimens; parafossettid generally curved and accessory fossettids commonly present on p4; molars maintain primitive castoroid occlusal pattern, mesofossette (−id) forms before elimination of the parafossette (−id) and metafossette (−id). Derived characters shared with Eucastor : procumbent upper incisors (procumbency>100 °); M3 markedly smaller than anterior molars; high, arched upper diastema; ridge on posterior wall of orbit; more anterior position of ascending ramus on mandible (m2 blocked from lateral view). Stratigraphic and geographic range.—Early–late to late

Barstovian (Miocene) of Nebraska.

Kingdom

Animalia

Phylum

Chordata

Class

Mammalia

Order

Rodentia

Family

Castoridae

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