Megalancosaurus Limbs – WP#14

While the forelimb of Drepanosaurus unguicaudatus is very, very different from the general tetrapod design with its huge ulnare [n1], it’s still recognizably a forelimb. The forelimb of Megalancosaurus preonensis was a lot less strange, but unique in its own way: It also had a large ulnare, short radiale, but combined this with a bizarre chameleon-like hand cofiguration.

Forelimb of Megalancosaurus preonensis in medial, lateral, anterior and posterior views.

Peculiar Limb Exaptation – WP#13

In a typical tetrapod limb, the metapodium (that portion of the limb below the elbow and above the wrist, including the ulna, radius, ulnare, radiale, intermedium, and a few other bones in some animals) is fairly basic. Some animals can drastically change this model.

Shoulders and Hips in Megalancosaurus – WP#12

Another interesting area of research that has intrigued me has been the physical and ecological habitus of various megalancosaurids, specifically Megalancosaurus preonensis and Drepanosaurus unguicaudatus. Today, I will mention Megalancosaurus, the more “tame” of the two.