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Showing posts with label diagrams. Show all posts
Showing posts with label diagrams. Show all posts

Wednesday, February 13, 2008

Nemicolopterus crypticus Skeletal

A preliminary skeletal of the new (and absolutely tiny) pterosaur Nemicolopterus crypticus. This was done from the not-very-high-resolution photographs and drawings in the description, so I do stress that it is preliminary.

White indicates bones present and restorable, light grey indicates bones that are present but I had to pretty my make up (because they are badly crushed, partially obscured by other bones, etc.) and dark grey missing elements. Stipples indicate air sacs. Gotta say, this is one cool looking little beasty. Really birdlike.

References:
Wang et al., 2008. Discovery of a rare arboreal forest-dwelling flying reptile (Pterosauria, Pterodactyloidea) from China. PNAS vol. 105 (6) pp. 1983-1987


Permalink at Palaeontography

Sunday, January 13, 2008

Comparitive Forelimb Muscle Attachments - Ventral

The ventral forelimb muscle attachment sites in crocodylians, Anhanguera, and a corvid. The attachments in Anhanguera are inferred from muscle scars, and comparison with crocodylians and birds.

  • Bennett, S. C., 2003. Morphological evolution of the pectoral girdle of pterosaurs myology and function, in Buffetaut, E., and Mazin, J-M. (eds) 2003, Evolution and Palaeobiology of Pterosaurs, geological society of London, 2003 217 pp. 191-215
  • Hudson, E. H., Lanzillotti P. J., 1955. Gross anatomy of the wing muscles in the family Corvidae, The American Midland Naturalist, 53:1 pp. 1-44
  • Meers, M. B., 2003. Crocodylian forelimb musculature and its relevance to the Archosauria, The Anatomica Record, Part A

Comparitive Forelimb Muscle Attachments - Dorsal

The dorsal forelimb muscle attachment sites in crocodylians, Anhanguera, and a corvid. The attachments in Anhanguera are inferred from muscle scars, and comparison with crocodylians and birds.

  • Bennett, S. C., 2003. Morphological evolution of the pectoral girdle of pterosaurs myology and function, in Buffetaut, E., and Mazin, J-M. (eds) 2003, Evolution and Palaeobiology of Pterosaurs, geological society of London, 2003 217 pp. 191-215
  • Hudson, E. H., Lanzillotti P. J., 1955. Gross anatomy of the wing muscles in the family Corvidae, The American Midland Naturalist, 53:1 pp. 1-44
  • Meers, M. B., 2003. Crocodylian forelimb musculature and its relevance to the Archosauria, The Anatomica Record, Part A

Thursday, January 10, 2008

The Structure of a Pterosaur



Here's something I've been working on for quite some time: a multi-layered diagram of all the structural elements of a pterosaur - basically, the things that give them their shape.

You can find the full version, with a still image, an interactive version, and a higher-res video at palaeontography.

It's also up at YouTube, if you want to vote for it, or whatever people do on YouTube.