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| TITLE: | Description of Montanazhdarcho minor, an azhdarchid pterosaur from the Two Medicine Formation (Campanian) of Montana
| | AUTHOR: | Michael R. McGowen, Kevin Padian, Michael A. de Sosa, and Robert J. Harmon
| | JOURNAL: | PaleoBios
| | PUBLISHED: | May 15, 2002
| | NOTES: | 22(1)
| | ABSTRACT: | The wing skeleton of the Campanian azhdarchid pterosaur Montanazhdarcho minor Padian et al. 1995 is described and compared io other Cretaceous pterosaurs. It is distinguished from all other known azhdarchids by its small mature size, among other characters. Notable features include elongated cervical vertebrae with weak neural crests, a ring-like pectoral girdle, and an unwarped deltopectoral crest that is 30% of the length of the humerus. The ulna is slightly longer than the wing metacarpal, and the articular surface of the radius lacks a central pneumatic foramen. The wing metacarpal has a rounded dorsal condyle but there is no median ridge between the distal condyles. The mandible is edentulous, further support is given to the reduced distal expansion of the deltopectoral crest as an azhdarchid svnapomorphy.
| | COLLECTION: | PaleoBios Archive Public
| | ID: | 145
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