Journal article
The cranial endoskeleton of Tiktaalik roseae
Nature (London), v 455(7215), pp 925-929
16 Oct 2008
PMID: 18923515
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Among themorphological changes that occurred during the 'fish- to- tetrapod' transition was a marked reorganization of the cranial endoskeleton. Details of this transition, including the sequence of character acquisition, have not been evident from the fossil record. Here we describe the braincase, palatoquadrate and branchial skeleton of Tiktaalik roseae, the Late Devonian sarcopterygian fish most closely related to tetrapods. Although retaining a primitive configuration in many respects, the cranial endoskeleton of T. roseae shares derived features with tetrapods such as a large basal articulation and a flat, horizontally oriented entopterygoid. Other features in T. roseae, like the short, straight hyomandibula, show morphology intermediate between the condition observed in more primitive fish and that observed in tetrapods. The combination of characters in T. roseae helps to resolve the relative timing of modifications in the cranial endoskeleton. The sequence of modifications suggests changes in head mobility and intracranial kinesis that have ramifications for the origin of vertebrate terrestriality.
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Details
- Title
- The cranial endoskeleton of Tiktaalik roseae
- Creators
- Jason P. Downs - Academy of Natural Sciences of Drexel UniversityEdward B. Daeschler - Drexel UniversityFarish A. Jenkins - Harvard UniversityNeil H. Shubin - University of Chicago
- Publication Details
- Nature (London), v 455(7215), pp 925-929
- Publisher
- Springer Nature
- Number of pages
- 5
- Grant note
- Academy of Natural Sciences of Philadelphia Putnam Expeditionary Fund (Harvard University) University of Chicago Canadian Museum of Nature National Science Foundation; National Science Foundation (NSF) National Geographic Society Committee for Research and Exploration; National Geographic Society Polar Continental Shelf Project; Natural Resources Canada
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Biodiversity, Earth, and Environmental Science (BEES); Academy of Natural Sciences of Drexel University
- Web of Science ID
- WOS:000260038300041
- Scopus ID
- 2-s2.0-54049134771
- Other Identifier
- 991019168680404721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Multidisciplinary Sciences