Answer the following question: Information: - The Chadronian age within the North American Land Mammal Ages chronology is the North American faunal stage typically set from 38,000,000 to 33,900,000 years BP, a period of . It is usually considered to fall within the Eocene epoch. The Chadronian is preceded by the Duchesnean and followed by the Orellan NALMA stages. - The Eocene Epoch, lasting from , 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 Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope C in the atmosphere was exceptionally low in comparison with the more common isotope C. The end is set at a major extinction event called the "Grande Coupure" (the "Great Break" in continuity) or the EoceneOligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and end of the epoch are well identified, though their exact dates are slightly uncertain. - A pig is any of the animals in the genus Sus, within the Suidae family of even-toed ungulates. Pigs include the domestic pig and its ancestor, the common Eurasian wild boar ("Sus scrofa"), along with other species; related creatures outside the genus include the peccary, the babirusa, and the warthog. Pigs, like all suids, are native to the Eurasian and African continents. Juvenile pigs are known as piglets. Pigs are highly social and intelligent animals. - Entelodonts sometimes facetiously termed hell pigs or terminator pigs are an extinct family of pig-like omnivores of the forests and plains of North America, Europe, and Asia from the middle Eocene to early Miocene epochs (37.216.3 million years ago), existing for about 21 million years. - Entelodon (meaning "complete teeth", from Ancient Greek "entels" "complete" and "odn" "tooth", referring to its "complete" eutherian dentition), is an extinct genus of entelodont artiodactyl endemic to Eurasia. Fossils of species are found in Paleogene strata ranging in age from the Houldjinian (37.233.9 mya) until the Rupelian epoch of the early Oligocene (33.928.4 mya). - Cypretherium coarctatum is an extinct entelodont from the Chadronian strata of the Cypress Hills Formation in Saskatchewan . Given the information above, choose from the list below the object entity that exhibits the relation 'taxon rank' with the subject 'cypretherium'. Choices: - division - family - genus
Answer:
genus