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Cynthiacetus
Temporal range: Late Eocene
~40.4–33.9Ma
Museum of Natural History Cynthiacetus.jpg
Skeleton at the MNHN, Paris
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Infraorder: Cetacea
Family: Basilosauridae
Subfamily: Dorudontinae
Genus: Cynthiacetus
Species
  • C. maxwelli (type)
  • C. peruvianus

Cynthiacetus is an extinct genus of basilosaurid early whale that lived during the Late Eocene (Bartonian-Priabonian, 40.4 to 33.9 million years ago.) Specimens have been found in the southeastern United States and Peru (Otuma Formation).

Description

Cynthiacetus peruvianus skull
Skull of C. peruvianus at the MNHN, Paris

Cynthiacetus was named after the town of Cynthia, Mississippi, close to where the type specimen for the species C. maxwelli was discovered.

The skull of C. maxwelli was similar in size and morphology to that of Basilosaurus cetoides, but Cynthiacetus lacked the elongated vertebrae of Basilosaurus. erected the genus to avoid the nomen dubium Pontogeneus (which was based on poorly described and now vanished specimens). Cynthiacetus was smaller than Masracetus.

The South American species C. peruvianus, the first archaeocete to be described on that continent, mainly differs from C. maxwelli in the number of cuspids in the lower premolars, but it also has the greatest numbers of thoracic vertebrae (20). The type specimen of C. peruvianus belonged to an adult individual measuring 9 m (30 ft) long.

See also

Kids robot.svg In Spanish: Cynthiacetus para niños

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