Sinopa is an extinct genus of creodonts that lived during the Eocene

Eocene

The Eocene Epoch, lasting from about 56 to 34 million years ago , is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era. The Eocene spans the time from the end of the Palaeocene Epoch to the beginning of the Oligocene Epoch. The start of the...

 to Early Oligocene

Oligocene

The Oligocene is a geologic epoch of the Paleogene Period and extends from about 34 million to 23 million years before the present . As with other older geologic periods, the rock beds that define the period are well identified but the exact dates of the start and end of the period are slightly...

 in United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 and Egypt

Egypt

Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...

.

Sinopa was one of the smaller creodonts to the family Hyaenodontidae. His carnassial

Carnassial

Carnassials are large teeth found in many carnivorous mammals, used for shearing flesh and bone in a scissor- or shear-like way. In the Carnivora, the carnassials are the modified last upper premolar and the first molar, but in the prehistoric creodonts, the carnassials were further back in the...

s teeth was the second upper molar and the lower third. Sinopa had an estimated weight of 1.3 to 1.4 kilograms. The type specimen was found in the Bridger formation in the Uinta County, Wyoming

Uinta County, Wyoming

-Demographics:As of the census of 2000, there were 19,742 people, 6,823 households, and 5,144 families residing in the county. The population density was 10 people per square mile . There were 8,011 housing units at an average density of 4 per square mile...

, existed 50.3 to 46.2 years ago.