A rapidly burgeoning new tool in the study of vertebrate anatomy is "digital morphology".  Modern and fossil vertebrates can be scanned using computed tomography (CT) and magnetic resonance imaging (MRI) which allows us to see what's inside without cutting or grinding up the specimen.

DigiMorph.org at UT, Austin provides the largest online library of digital data.  Click on the image below to go to the corresponding page at DigiMorph.org.

Additional visualizations can be seen at Ohio University's micro-CT site!

Below are some of the "officially" published critters that we have worked up.