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Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/24966

Title: Evidence for modular evolution in a long-tailed pterosaur with a pterodactyloid skull.
Authors: Lü, J
Unwin, DM
Jin, X
Liu, Y
Ji, Q
Issue Date: 7-Feb-2010
Citation: PROC BIOL SCI, 2010, 277 (1680), pp. 383-389
Abstract: The fossil record is a unique source of evidence for important evolutionary phenomena such as transitions between major clades. Frustratingly, relevant fossils are still comparatively rare, most transitions have yet to be documented in detail and the mechanisms that underpin such events, typified by rapid large scale changes and for which microevolutionary processes seem insufficient, are still unclear. A new pterosaur (Mesozoic flying reptile) from the Middle Jurassic of China, Darwinopterus modularis gen. et sp. nov., provides the first insights into a prominent, but poorly understood transition between basal, predominantly long-tailed pterosaurs and the more derived, exclusively short-tailed pterodactyloids. Darwinopterus exhibits a remarkable 'modular' combination of characters: the skull and neck are typically pterodactyloid, exhibiting numerous derived character states, while the remainder of the skeleton is almost completely plesiomorphic and identical to that of basal pterosaurs. This pattern supports the idea that modules, tightly integrated complexes of characters with discrete, semi-independent and temporally persistent histories, were the principal focus of natural selection and played a leading role in evolutionary transitions.
DOI Link: 10.1098/rspb.2009.1603
eISSN: 1471-2954
Links: http://hdl.handle.net/2381/24966
Type: Journal Article
Appears in Collections:Published Articles, School of Museum Studies

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