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Balaenoptera cephalus Cope 1867 (rorqual)

Mammalia - Artiodactyla - Balaenopteridae

PaleoDB taxon number: 65766

Alternative combinations: Cetotherium cephalum, Cetotherium cephalus, Eschrichtius cephalus

Full reference: E. D. Cope. 1867. [Descriptions of Eschrichtius cephalus, Rhabdosteus latiradix, Squalodon atlanticus, and S. mento.]. Proceedings of the Academy of Natural Science of Philadelphia 1867:131-132

Belongs to Balaenoptera according to M. D. Uhen et al. 2008

Sister taxa: Balaenoptera acutorostrata, Balaenoptera andrejewi, Balaenoptera bertae, Balaenoptera bonaerensis, Balaenoptera borealis, Balaenoptera brydei, Balaenoptera davidsonii, Balaenoptera edeni, Balaenoptera fasciata, Balaenoptera grimmi, Balaenoptera musculus, Balaenoptera omurai, Balaenoptera physalus, Balaenoptera ryani, Balaenoptera siberi, Balaenoptera sursiplana

Type specimen: ANSP 12691, a partial skeleton (2 mandibuluar rami, 13 vertebrae, 4 rib fragments, and 137 misc bone fragments). Its type locality is James T. Thomas estate, which is in a Langhian offshore shelf horizon in the Calvert Formation of Maryland.

Ecology: aquatic suspension feeder

Average measurements (in mm): humerus length 296.0

Estimated body mass: 10.7 tons based on humerus length