Isocetus

Extinct genus of whales

Isocetus
Temporal range: Langhian–Serravallian
PreꞒ
O
S
D
C
P
T
J
K
Pg
N
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Infraorder: Cetacea
Parvorder: Mysticeti
Clade: Thalassotherii
Genus: Isocetus
van Beneden, 1880
Species
  • I. depauwi van Beneden, 1880 (type)

Isocetus is an extinct genus of baleen whale belonging to the clade Thalassotherii. Remains have been found in middle Miocene marine deposits in Belgium.

Description

Isocetus was considered a nomen dubium by Steeman (2010) but was treated as a distinct species by Bisconti et al. (2013) based on characters of the mandibular condyle and dentary. A complete thalassothere specimen from Belgium previously assigned to Isocetus depauwi by Abel (1938) is now the holotype of the species Parietobalaena campiniana.[1][2][3]

References

  1. ^ O. Abel. 1938. Vorlaeufige mitteilungen ueber die revision der fossilen mystacoceten aus dem Tertiaer Belgiens. Bulletin du Musee royal d'Histoire naturelle de Belgique 14(1):1-34
  2. ^ M. Steeman. 2010. The extinct baleen whale fauna from the Miocene-Pliocene of Belgium and the diagnostic cetacean ear bones. Journal of Systematic Palaeontology 8(1):63-80
  3. ^ M. Bisconti, O. Lambert, and M. Bosselaers. 2013. Taxonomic revision of Isocetus depauwi (Mammalia, Cetacea, Mysticeti) and the phylogenetic relationships of archaic 'cetothere' mysticetes. Palaeontology 56(1):95-127
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Genera of baleen whales and their extinct allies
  • Borealodon
  • Coronodon
  • Imerocetus
  • Mioceta?
  • Piscocetus
  • Siphonocetus?
  • Tretulias?
  • Ulias?
Aetiocetidae
Llanocetidae
Mammalodontidae
Chaeomysticeti
Eomysticetoidea
Eomysticetidae
Balaenomorpha
Balaenidae
Thalassotherii
Aglaocetidae
Diorocetidae
Pelocetidae
Tranatocetidae
Cetotheriidae
Cetotheriinae
Herpetocetinae
Balaenopteroidea
Balaenopteridae
Aetiocetus cotylalveus Janjucetus hunderi Horopeta umarere Parietobalaena yamaokai
Taxon identifiers
Isocetus


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