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Named By: P. D. Gingerich in 1992
Time Period: Late Eocene
Location: Egypt - Qasr el Sagha Formation
Size: Uncertain due to lack of remains
Diet: Carnivore
Fossil(s): Partial skull and jaws
Classification: | Chordata | Mammalia | Cetacea | Archaeoceti | Basilosauridae | Dorudontinae |
Also known as: | Dorudon elliotsmithii | Dorudon sensitivus | Dorudon zitteli | Zeuglodon elliotsmithii | Zeuglodon sensitivius | Zeuglodon sensitivus | Zeuglodon zitteli |

Saghacetus is an extinct genus of basilosaurid early whale, fossils of which have been found in the Upper Eocene (middle Priabonian, 37.2 to 33.9 million years ago) Qasr el Sagha Formation, Egypt (29.7degN 30.8degE / 29.7; 30.8, paleocoordinates 25.0degN 26.7degE / 25.0; 26.7).

In 1879, German botanist Georg August Schweinfurth spent many years exploring Africa and eventually discovered the first archaeocete whale in Egypt. He visited Qasr el Sagha in 1884 and 1886 and missed the now famous "Zeuglodon Valley" with a few kilometres. German palaeontologist Wilhelm Barnim Dames described the material, including a well-preserved dentary which is the type specimen of Zeuglodon osiris.

The generic name Saghacetus was established by Gingerich 1992 to group the ancient species Dorudon osiris, D. zitteli, D. sensitivius and D. elliotsmithii on a single species, Saghacetus osiris. This species is distinguished from other members of the subfamily Dorudontinae by its smaller size and the slightly elongated proximal lumbar and caudal vertebrae.

Saghacetus is smaller than its contemporary Stromerius, both of which are smaller than the older Dorudon.

Read more about Saghacetus at Wikipedia
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