Английская Википедия:Cynthiacetus

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Short description Шаблон:Automatic taxobox

Cynthiacetus is an extinct genus of basilosaurid early whale that lived during the Late Eocene (Bartonian-Priabonian, Шаблон:Mya.)[1] Specimens have been found in the southeastern United States and Peru (Otuma Formation).[2]

Discovery and naming

Файл:Cynthiacetus peruvianus skull.JPG
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.

Description

Файл:Cynthiacetus maxwelli.png
Life restoration

The skull of C. maxwelli was similar in size and morphology to that of Basilosaurus cetoides, but Cynthiacetus lacked the elongated vertebrae of Basilosaurus. Шаблон:Harvnb erected the genus to avoid the nomen dubium Pontogeneus (which was based on poorly described and now vanished specimens).[3] Cynthiacetus was smaller than Masracetus.[4]

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).[2] The type specimen of C. peruvianus belonged to an adult individual measuring Шаблон:Cvt long.[5]

Шаблон:Clearleft

References

Шаблон:Portal Шаблон:Commons category Шаблон:Reflist

Bibliography

Шаблон:Refbegin

Шаблон:Refend

Шаблон:Archaeoceti Шаблон:Taxonbar


Шаблон:Paleo-whale-stub