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Longisquama pectoral girdle and sternal complex

Rollover the above image of Longisquama to identify the sternal complex and pectoral girdle largely hidden due to crushing and overlying scales and skin.

Longisquama sister taxa
Basal fenestrasaurs
Cosesaurus, Sharovipteryx, Longsisquama, MPUM 6009 and Kyrgyzsaurus. Click to enlarge.
Longisquama is featured in The Pterosaur Heresies
Longisquama flapping
Flappiing Longisquama
An animated example of how the flapping behavior enhanced the secondary sexual character of the tail vane and plumes. This ultimately evolved into powered flight in pterosaurs.
 

Bennett SC 2008. Morphological evolution of the forelimb of pterosaurs: myology and function. Pp. 127–141 in E. Buffetaut & D.W.E. Hone (eds.), Flugsaurier: pterosaur papers in honour of Peter Wellnhofer. Zitteliana, B28.

Elgin RA, Hone DWE and Frey E 2011. The extent of the pterosaur flight membrane. Acta Palaeontologica Polonica doi: 10.4202/app.2009.0145 online pdf

Jones TD et al 2000. Nonavian Feathers in a Late Triassic Archosaur. Science 288 (5474): 2202–2205. doi:10.1126/science.288.5474.2202. PMID 10864867.

Martin LD 2004. A basal archosaurian origin for birds. Acta Zoologica Sinica 50(6): 978-990.

Peters D 2000. A Redescription of Four Prolacertiform Genera and Implications for Pterosaur Phylogenesis. Rivista Italiana di Paleontologia e Stratigrafia 106 (3): 293–336.

Peters D 2002. A New Model for the Evolution of the Pterosaur Wing – with a twist. Historical Biology 15: 277-301.

Senter P 2003. Taxon Sampling Artifacts and the Phylogenetic Position of Aves. PhD dissertation. Northern Illinois University, DeKalb, IL, 1-279.

Senter P 2004. Phylogeny of Drepanosauridae (Reptilia: Diapsida) Journal of Systematic Palaeontology 2(3): 257-268.

Sharov AG 1970. A peculiar reptile from the lower Triassic of Fergana. Paleontologiceskij Zurnal (1): 127–130.

wiki/Longisquama

 
Tritosauria
Tijubina
Huehuecuetzpalli
 
Tanystropheidae
Macrocnemus
Dinocephalosaurus
Amotosaurus
Langobardisaurus
Tanytrachelos
Tanystropheus
 
Fenestrasauria
Cosesaurus
Kyrgyzsaurus
Sharovipteryx
Longisquama
MPUM6009
other pterosaurs
Squamata
 

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