Browse the Library by:
 Scientific Names
 Common Names
 What's New ?
 What's Popular?
Learn More
Overview Pages
A Production of

The Digital Morphology library is a dynamic archive of information on digital morphology and high-resolution X-ray computed tomography of biological specimens. Browse through the site and see spectacular imagery and animations and details on the morphology of many representatives of the Earth's biota. Recent additions or updates to the site include:

The Origin of Turtles
The point of origin of turtles within amniotes has long been a source of contention. Bever and coauthors, in a recent issue of Nature, examine via high-resolution X-ray CT the enigmatic taxon Eunotosaurus africanus, a 260-million-year-old fossil reptile from the Karoo Basin of South Africa. Their analysis suggests a 40-million-year extension to the turtle stem and moves the ecological context of turtle origins back onto land. Learn more by reading this new DigiMorph account.  [more...] 
That's Just How They (En)Roll2015-08-04 12:00:00
Throughout trilobite evolution, various clades independently converged upon morphologies that permitted enrollment of their exoskeletons so as to efficiently encase their soft tissues within a hard protective carapace. Derived trilobites, like the Flexicalymene shown here, had differentially-thickened cuticles and a number of coaptative devices, morphological structures that guided the articulation between segments and locked the exoskeleton in an enrolled posture. Learn more about this defensive mechanism by reading this new DigiMorph account.  [more...] 
The Alligator Gar, Atractosteus spatula2015-07-14 12:00:00
The Alligator Gar, <i>Atractosteus spatula</i>
The alligator gar is one of the largest freshwater fish species in North America. Once abundant throughout the Mississippi River basin and Gulf of Mexico tributaries, it is now considered vulnerable to extinction due to commercial harvest and early attempts to eradicate it as a 'trash fish' in favor of sport fish populations. Learn more about Atractosteus spatula by reading this new DigiMorph account by Jim Long.  [more...] 
It's a Bird!!2015-06-18 12:00:00
Balanoff and coauthors described this egg as that of a neoceratopsian dinosaur in 2008. However, further examination of the high-resolution X-ray CT data resulted in reidentification of the specimen as that of an enantiornithine bird. In their new PLoS ONE paper, Varricchio and coauthors state that the embryo exhibits avian apomorphies including a strut-like coracoid and an ulna longer than its humerus. Learn more about this egg unscrambling here.  [more...] 
A 17-My-Old Ziphiid Whale2015-05-26 12:00:00
A 17-My-Old Ziphiid Whale
Wichura and coauthors recently described a beaked whale fossil from the Turkana region of Kenya that was found a considerable distance inland from the present-day coastline of the Indian Ocean. Their Proceedings of the National Academy of Sciences paper discusses the paleoenvironmental implications of this discovery. Learn more by reading the DigiMorph account.  [more...] 
Duchesnean Primate, Rooneyia viejaensis2014-05-22 12:00:00
Duchesnean Primate, <i>Rooneyia viejaensis</i>
E.C. Kirk and coauthors published a detailed study of the internal cranial anatomy of Rooneyia, a North American Eocene primate of uncertain phylogenetic affinities, in the Journal of Human Evolution. Their analysis suggests that Rooneyia is an advanced stem primate or a basal crown primate. Learn more by reading this updated DigiMorph account.  [more...] 
©2002-2015 - UTCT/DigiMorph.org Funding by NSF