Eutheria
Placental Mammals
![taxon links](/Public/treeImages/Eutheria.png?x=507239803)
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This tree diagram shows the relationships between several groups of organisms.
The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancestor diversified over time into several descendent subgroups, which are represented as internal nodes and terminal taxa to the right.
![example of a tree diagram](/tree/img/TreeHelpImage.gif)
You can click on the root to travel down the Tree of Life all the way to the root of all Life, and you can click on the names of descendent subgroups to travel up the Tree of Life all the way to individual species.
For more information on ToL tree formatting, please see Interpreting the Tree or Classification. To learn more about phylogenetic trees, please visit our Phylogenetic Biology pages.
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Information on the Internet
- Mammal Tree of Life. A multi-institution collaboration sponsored by the National Science Foundation to build a phylogenetic tree for mammals using data from molecules, anatomy, behavior and physiology of both living and fossil mammals.
- African Mammals Databank. A GIS-based databank on the distribution and conservation of all the big and medium-sized mammals over the whole African continent.
- Morphological Image Database (Placental Mammals). Robert J. Asher, Cambridge University.
- ZOO in the wild. A virtual zoo with information on African and European mammals.
- African Wildlife Foundation
- The Ultimate Ungulate Page. Your Guide to the World's Hoofed Mammal Species.
Fossil Eutheria
- Earliest Known Ancestor of Placental Mammals Discovered. National Geographic News (2002).
- Earliest rabbit fossil found, suggests modern mammal group emerged as dinosaurs faced extinction. Information about Gomphos elkema, American Museum of Natural History.
- Introduction to the Desmostylia. UCMP Berkeley.
- Introduction to the Embrithopoda. UCMP Berkeley.
Title Illustrations
![Click on an image to view larger version & data in a new window](/tree/img/magnify.gif)
Scientific Name | Oreamnos americanus |
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Location | Olympic National Park, Washington, USA |
Specimen Condition | Live Specimen |
Source | IH026511 |
Source Collection | Flickr |
Image Use |
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Copyright | © 2007 Billy Trent, CPO,USN-Ret |
Scientific Name | Loxodonta africana |
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Comments | African elephant |
Specimen Condition | Live Specimen |
Copyright |
© 2000 Greg and Marybeth Dimijian
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Scientific Name | Choloepus hoffmani |
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Comments | Two-toed sloth |
Life Cycle Stage | juvenile |
Copyright |
© 2000 Greg and Marybeth Dimijian
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