Aglaocetus

{{Automatic taxobox

| fossil_range = Early-Late Miocene
~{{fossil range|20.4|7.2}}

| image = Aglaocetus FMNH.jpg

| image_caption = A. moreni skull

| parent_authority = Steeman 2007

| taxon = Aglaocetus

| authority = Kellogg 1934

| display_parents = 2

| subdivision_ranks = Species

| subdivision = * A. latifrons {{small|(van Beneden 1880)}}

A. longifrons {{small|(van Beneden 1880)}}
A. moreni {{small|(Lydekker 1894) (type)}}
A. rotundus {{small|(van Beneden 1880)}}

| synonyms = * Amphicetus rotundus {{small|van Beneden 1880}}

Cetotherium moreni {{small|Lydekker 1894}}
Idiocetus longifrons
Mesocetus latifrons
Plesiocetus longifrons
Plesiocetus latifrons

}}

Aglaocetus is a genus of extinct baleen whales 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.

Species

File:Aglaocetus moreni skull.jpg

There are three currently recognized valid species: Aglaocetus moreni, A. latifrons, and A. rotundus.R. Lydekker. 1894. Cetacean skulls from Patagonia. Anales del Museo de la Plata II:1-13P. J. Van Beneden. 1859. Rapport de M. Van Beneden. Bulletins de L'Academie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique 8:123-146P. 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

The type species, Aglaocetus moreni, was originally described as a species of Cetotherium, but later recognized as generically distinct from the latter.R. Kellogg. 1934. The Patagonian Fossil Whalebone Whale, Cetotherium moreni (Lydekker). Carnegie Institution of Washington 447:64-81 "Aglaocetus" patulus, described from the Calvert Formation by Remington Kellogg in 1968,R. Kellogg. 1968. A sharp-nosed cetothere from the Miocene Calvert. Proceedings of the United States National Museum 247(7):163-173 was recovered by Bisconti et al. (2013) in a different phylogenetic position than the Aglaocetus type species.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 In 2020, A. patulus was renamed Atlanticetus.Bisconti, M., Damarco, P., Mao, S., Pavia, M. and Carnevale, G. (2020). The earliest baleen whale from the Mediterranean: large-scale implications of an early Miocene thalassotherian mysticete from Piedmont, Italy. Papers in Palaeontology doi:10.1002/spp2.1336