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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:

Three New Species of <i>Thorius</i>
Parra-Olea and coauthors have just published the results of a decades-long study of tiny salamanders from Oaxaca, Mexico. Thorius was first discovered in the 19th century, but populations have declined dramatically in the last 30-35 years. It may, in fact, be the world's most endangered genus of amphibians. In this study, published November 15th in PeerJ, the authors describe three new species and redescribe two species of Thorius -- and all five species can be found here on DigiMorph!  [more...] 
Spathorhynchus fossorium, Fossil Amphisbaenian2016-07-29 12:00:00
<i>Spathorhynchus fossorium</i>, Fossil Amphisbaenian
Amphisbaenians are enigmatic, limbless, fossorial squamates whose phylogenetic relationships are poorly understood. A new paper by Müller and coauthors in the Journal of Anatomy examines in detail the cranial osteology of Spathorhynchus fossorium, the oldest-known well-preserved amphisbaenian, from the Eocene Green River Formation of Wyoming. This study suggests that some 'primitive' characters may in fact be synapomorphies of an extinct Paleogene amphisbaenian clade.  [more...] 
Nodosaurid Ankylosaur, Pawpawsaurus campbelli2016-03-23 12:00:00
Nodosaurid Ankylosaur, <i>Pawpawsaurus campbelli</i>
A new paper by A. Paulina-Carabajal, Y.-N. Lee and L.L. Jacobs explores the endocranial morphology of Pawpawsaurus campbelli from the upper Albian Paw Paw Formation of Tarrant County, Texas. Using high-resolution X-ray CT data, the authors help to fill critical gaps in our knowledge of ankylosaurian cranial neurovascular passages, morphology of the inner ear, and nasal cavities. Learn more about what they found by reading the DigiMorph account.  [more...] 
Crocodylus rhombifer, Cuban Crocodile2016-01-07 12:00:00
<i>Crocodylus rhombifer</i>, Cuban Crocodile
The Cuban crocodile is found today only in Cuba and Isla de la Juventud. However, it previously occurred in The Bahamas and Cayman Islands, as revealed by fossils recovered from underwater caves (blue holes) in the former and organic peat deposits in the latter. Evidence from radiocarbon dates, fossil and archaeological sites, and historical records confirms that Crocodylus rhombifer went extinct on these islands within the past 500 years, possibly as a result of overhunting. Learn more about the Cuban crocodile in this DigiMorph account contributed by Nancy Albury and David Steadman.  [more...] 
Horned Puffin, Fratercula corniculata2015-10-29 12:00:00
Horned Puffin, <i>Fratercula corniculata</i>
The horned puffin is a member of Pan-Alcidae, a clade that includes auks, auklets, puffins, guillemots, murres, and murrelets. One of three living puffin species in the Pacific Ocean basin, Fratercula corniculata spends most of its life at sea. Horned puffins usually come ashore only to breed, and are monogamous. Learn more about this species, and view its cranial endocast, by reading this new DigiMorph account by Dr. N. Adam Smith.  [more...] 
The Origin of Turtles2015-09-23 12:00:00
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...] 
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