List of Transitional Fossils - Evolution of Mammals

Evolution of Mammals

The Mammal Evolutionary Series
Appearance Taxa Relationships Status Description Image
100–104 Ma

Genus:

  • Kollikodon

The earliest-known monotreme to date.
125 Ma

Genus:

  • Sinodelphys

The oldest metatherian known.
?? Ma

Genus:

  • Djarthia

The earliest-known marsupial.
164-165 Ma

Genus:

  • Juramaia

The oldest known eutherian
63-50 Ma

Genus:

  • Eritherium

The earliest known proboscidean.
60-55 Ma

Genus:

  • Miacis

The ancestor of the modern Order Carnivora.
15.97–11.61 Ma

Genus:

  • Heteroprox

The earliest known cervid.
20-18 Ma

Genus:

  • Eotragus

The earliest known bovid.
45-40 Ma

Genus:

  • Protylopus

The oldest camel known, it was also the smallest.
??? Ma

Genus:

  • Hyrachyus

Suspected to be the ancestor of modern tapirs and rhinoceroses.
55.4—48.6 Ma

Genus:

  • Heptodon

Suspected to be the ancestor of modern tapirs.
38—33.9 Ma

Genus:

  • Hesperocyon

The earliest of the canids.
??? Ma

Genus:

  • Eurymylus

The earliest of the lagomorphs.
52.5 Ma

Genus:

  • Onychonycteris

One of the most primitive of the two oldest known monospecific genera of bat.
2 Ma

Genus:

  • Ailuropoda microta

The earliest known ancestor of the Giant Panda.
63 - 61.7Ma

Genus:

  • Purgatorius
 Believed to be the earliest example of a primate or a proto-primate, a primatomorph precursor to the Plesiadapiformes.
12.5-8.5 Ma

Genus:

  • Sivapithecus

This genus may have been the ancestor to the modern orangutans.
16 - 8 Ma

Genus:

  • Kenyapotamus
 An possible ancestor of living hippopotamids.
?? Ma

Genus:

  • Eomanis
 The earliest known true (and scaled) pangolin.

Read more about this topic:  List Of Transitional Fossils

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