What Class and Order do this organism belong to? What features definethose ranks?

*What Class and Order do this organism belong to? What features definethose ranks? (ex: Canis dirusis in Class Mammalia, a group which includes all animals with hair, mammary glands, etc.) use the proper formatting of a scientific name.
*What other members of the Family or Genus are known(ie: what is it closely related to)? Are any of its relatives still alive today?
*Describe them briefly, especially anydistinct anatomical features (size, quadrupedal posture, etc.).
*What was their life like? What did they eat? What were their weapons or defenses? What interesting behaviors did they have (herd activity, vocalization, etc.)?Where did they live?
*What survives of these organisms in the fossil record? Are there full skeletons? Are they only known from a selection of teeth or bones?Where havetheir fossils been found?
*When did the organism arise, and when did it go extinct?Why did it go extinct?
*Are there any interesting stories associated with the organism’s discovery?