Aglaocetus

Aglaocetus is a genus of extinct mysticete known from the Miocene of Patagonia, the US Eastern Seaboard, Japan and the Low Countries. It was once considered a member of Cetotheriidae along with many other putative cetotheres, but was recently recognized as representing a distinct family from true Cetotheriidae.

Aglaocetus
Temporal range: Early-Late Miocene
~20.4–7.2 Ma
A. moreni skull
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Infraorder: Cetacea
Superfamily: Balaenopteroidea
Family: †Aglaocetidae
Steeman 2007
Genus: †Aglaocetus
Kellogg 1934
Species
Synonyms

Species
Front view of A. moreni skull

There are five currently recognized valid species: Aglaocetus moreni, A. latifrons, A. burtini, A. rotundus, and A. patulus.[1][2][3][4]

The type species, Aglaocetus moreni, was originally described as a species of Cetotherium, but later recognized as generically distinct from the latter.[5] Recent cladistic analysis failed to recover A. patulus in a monophyletic clade with the genus, suggesting that A. patulus deserves a new generic name.[6]

Distribution

Fossils of Aglaocetus have been found in:[7]

Miocene
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References
  1. R. Lydekker. 1894. Cetacean skulls from Patagonia. Anales del Museo de la Plata II:1-13
  2. R. Kellogg. 1968. A sharp-nosed cetothere from the Miocene Calvert. Proceedings of the United States National Museum 247(7):163-173
  3. P. J. Van Beneden. 1859. Rapport de M. Van Beneden. Bulletins de L'Academie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique 8:123-146
  4. P. J. Van Beneden. 1880. Les mysticetes a courts fanons des sables des environs d'anvers. Bulletins de L'Academie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique 1880:11-27
  5. R. Kellogg. 1934. The Patagonian Fossil Whalebone Whale, Cetotherium moreni (Lydekker). Carnegie Institution of Washington 447:64-81
  6. 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
  7. Aglaocetus at Fossilworks.org
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