Condylarthra is an informal group – previously considered an order – of extinct placental mammals, known primarily from the Paleocene and Eocene epochs. [1] .

Condylarthra, extinct group of mammals that includes the ancestral forms of later, more-advanced ungulates (hoofed placental mammals). The name Condylarthra was once applied to a formal taxonomic order, but it is now used informally to refer to ungulates of Late Cretaceous and Early Paleogene times.

Condylarths: Archaic hoofed mammals . The order Condylarthra is one of the most characteristic groups of Paleocene mammals, and it illustrates well the evolutionary level of the Paleocene mammal fauna. When compared to the mammal fauna of today, condylarths are relatively unspecialized placental mammals.

Articles relating to the Condylarthra, an informal group – previously considered an order – of extinct placental mammals, known primarily from the Paleocene and Eocene epochs. They are considered early, primitive ungulates.

踝节类，古生物学术语。 这是一个复系类群，主要分布于北半球的古近纪早期，南美、非洲也有少量发现。 它保留了有胎盘类的一些原始特征，如全齿式、低冠、丘形齿、门齿和前臼齿简单等。 我国发现有豚齿兽 (Hyopsodon)等。 踝节类，古生物学术语。

1 天前 · Condylarths appear to be transitional between insectivores and true ungulates. They ranged from the late Cretaceous to the latter part of the Miocene and were a major part of the Palaeocene fauna. Some forms possessed claws and may have been arboreal (Hyopsodontidae), others became highly specialized, but the development of hoofs and ungulate ...

2018年5月21日 · Condylarthra (cohort Ferungulata, superorder Protoungulata) An extinct order comprising seven families of primitive ungulates, including some that resemble the original eutherian stock so closely that their classification has presented many difficulties; some authors break the order into several different groups, assigned to other orders.

The condylarths (Fig. 5.1) were principally a group of archaic ungulates that originated in Laurasia (the northern, connected continents, except for India) but that arrived in South America in the Late Cretaceous or Early Paleocene. Condylarthra as an order is paraphyletic (not a natural group and does not include all of the descendants of a ...

Condylarths are among the most characteristic Paleocene mammals and they illustrate the evolutionary level of the Paleocene mammal fauna. When compared to today's mammals, condylarths are relatively unspecialized placental mammals.

Condylarthra is an informal group – previously considered an order – of extinct placental mammals, known primarily from the Paleocene and Eocene epochs. [1] .