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Showing posts with label pterosaurs. Show all posts
Showing posts with label pterosaurs. Show all posts

Tuesday, February 02, 2010

Pteranodon longiceps

The surprisingly pot-bellied Pteranodon longiceps. For a more thorough exploration of aforementioned pot-belliness, check out my post on the Pterosaur.net Blog.

References
Bennett, S.C., 1991. Morphology of the Late Cretaceous pterosaur Pterandon and systematics of the Pterodactyloidea. PhD. dissertation, University of Kansas.

Claessens, L.P.A.M., O'Connor, P.M., and Unwin, D.M., 2009. Respiratory Evolution Facilitated the Origin of Pterosaur Flight and Aerial Gigantism. PLoS ONE vol. 4 (2) pp. e4497 Online

Hanson, M., 2008. Pteranodon Skeletals. Online

Paul, G.S., 2002. Dinosaurs of the Air. Johns Hopkins University Press, Baltimore.

Permalink at Palaeontography

Saturday, May 10, 2008

Nyctosaurus

For those who don't know, this is the rather spectacular crested Nyctosaurus—a medium-sized pterosaur from the Late Cretaceous. I did picture of this pair a few years back where I put sails on them, to go with the skim-sailing hypothesis that was so hot right then. It's not so hot right now, so this is an un-sailed version (which is based on an old painting I did at the same time, but never uploaded anywhere). I've extended the rear-facing prong somewhat, as it seems there were extra bits that weren't obvious in the original description.

Permalink at Palaeontography

Thursday, February 21, 2008

Nemicolopterus crypticus

Aw, what a tweet liddle tweedy bird! I want to snuglylumphs it all up!

The superb little pterosaur Nemicolopterus crypticus, in the trees, like all the restorations out there (hey, at least I went for something other than a ginko!). Based on my skeletal.


Permalink at Palaeontography

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.

Wednesday, December 12, 2007

Pteranodon sternbergi

Pteranodon sternbergi, a 6-8m wingspanned pterosaur from Late Creataceous North America soars over a choppy sea - generating lift from wind over the waves, just like an albatross.

Friday, April 07, 2006

Anhanguera Portrait

Anhanguera piscator

Anhanguera piscator sat for a portrait. Very proud of her wings, she was.

(A work in progress, she lacks teeth for on thing.)