溝齒獸

溝齒獸（學名Bothriodon）是一類已滅絕的石炭獸科。牠們生存於始新世晚期的亞洲、歐洲及北美洲。

參考

• The Beginning of the Age of Mammals by Kenneth D. Rose
• Mammoths, Sabertooths, and Hominids by Jordi Agusti and Mauricio Anton