Archaebalaenoptera Bisconti, 2007

Bisconti, Michelangelo, Munsterman, Dirk K. & Fraaije, René H. B., 2020, A new species of rorqual whale (Cetacea, Mysticeti, Balaenopteridae) from the Late Miocene of the Southern North Sea Basin and the role of the North Atlantic in the paleobiogeography of Archaebalaenoptera, PeerJ 8 (8315), pp. 1-32 : 6-7

publication ID

https://doi.org/ 10.7717/peerj.8315

publication LSID

lsid:zoobank.org:pub:41E2B619-3E94-4299-956E-CAF7237A147F

DOI

https://doi.org/10.5281/zenodo.5920342

persistent identifier

https://treatment.plazi.org/id/892EF112-3B10-FF8B-FDF4-D2D515D9FEAC

treatment provided by

Plazi

scientific name

Archaebalaenoptera Bisconti, 2007
status

 

Archaebalaenoptera Bisconti, 2007

Emended diagnosis of genus. Supraoccipital with rounded anterior border and strong transverse constriction; posterior apex of nuchal crest triangular in dorsal view and directed posteriorly; supraoccipital horizontally bent approximately at mid-length; zygomatic process of squamosal projecting anterolaterally and with sharply defined supramastoid crest; interorbital region of the frontal with transversely rounded sides; posterolateral corner of exoccipital protruding posteriorly.

Discussion. Archaebalaenoptera differs from other balaenopterids in having a unique mix of morphological characters. In particular, while the transverse constriction of the supraoccipital is observed also in ‘Balaenoptera’ cortesii var. portisi , in Archaebalaenoptera the constriction is associated with a rounded anterior border of the supraoccipital; in ‘B.’ cortesii var. portisi the anterior border of the supraoccipital is narrow-to-pointed. The extended posteriorly protruding posterolateral corner of the exoccipital is also observed in Fragilicetus velponi but in that taxon, the supraoccipital is largely different being more squared at its anterior border and the being transverse constriction very reduced. In cross section, the round sides of the interorbital region of the frontal are typical of this genus and represent a marked difference with other balaenopterid genera where the sides of the interorbital region of the frontal are squared or concave.

Type species. Archaebalaenoptera castriarquati Bisconti, 2007

Kingdom

Animalia

Phylum

Chordata

Class

Mammalia

Order

Cetacea

Family

Balaenopteridae

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