Like other members of the odd-toed ungulates (the perissodactyls), equids once had a
higher species diversity in the fossil record than they have today. This is generally explained …

Evolutionary theory has long proposed a connection between trait evolution and
diversification rates. In this work, we used phylogenetic methods to evaluate the relationship …

Horses are a classic example of macroevolution in three major traits—large body size, tall-
crowned teeth (hypsodonty), and a single toe (monodactyly)—but how and why monodactyly …

Interest in the origin and evolution of Equus dates back to over a century, but there is still no
consensus on the definition of the genus or its phylogenetic position. We review the …

Abstract The equidsubfamily Equinae radiated 17.5 Ma in the New World and reached the
Old World at around 11 Ma. The New World radiationcomprised three tribes (Hipparionini …

Abstract The diversity of South American proboscideans during the Quaternary has been a
subject of discussion for decades. The presence of Cuvieronius hyodon in South America is …

The spread of grasslands and cooling climate in the Miocene contributed to an increasingly
abrasive diet for ungulates. This increase in abrasiveness is proposed to select for both …

The extinction of the Quaternary megafauna stands out among the evolutionary history of
Cenozoic mammals. In South America, nearly 80% of the megamammals went extinct …

Macrauchenia patachonica Owen, 1838 is a native and extinct Quaternary megamammal
from South America. Although studies on macraucheniids started two centuries ago, when …

A paleontological deposit near San Clemente de Térapa represents one of the very few
Rancholabrean North American Land Mammal Age sites within Sonora, Mexico. During that …