Cerdocyonina

Cerdocyonina is a natural lineage whose common ancestor was sister to the Eucyon–Canis–Lycaon lineage. It is represented in the fossil record of North America by Cerdocyon 6-5 million years ago, and by Theriodictis and Chrysocyon 5–4 million years ago. and 1970: • Genus Cerdocyon • Subgenus Atelocynus • Subgenus Cerdocyon • Subgenus Speothos • Genus Dusicyon • Subgenus Lycalopex (Langguth recognized it as "Pseudalopex") • Subgenus †Dusicyon • Genus Chrysocyon Morphological and DNA evidence shows that the South American canids, being the most diverse group of canids on any continent, forms its own natural group. In 2018, a study found that the extinct South American Canis gezi did not fall under genus Canis and should be classified under the Cerdocyonina, however no genus was proposed. ==Genetic lineage==

In 2005, a genetic study revealed the cladogram below, and Dusicyon. Common ancestor In 2022, a study sequenced the genomes of the living members of Cerdocyonina, which indicates that they commenced diversifying from a common ancestor between 3.9—3.5 million years ago. This finding is consistent with the ancestor arriving in South America from Central America through the Isthmus of Panama and then entering into eastern South America. The subtribe then expanded to occupy the entire continent. ==References==