Origin and early evolution of vertebrate skeletonization
- PMID: 12430166
- DOI: 10.1002/jemt.10217
Origin and early evolution of vertebrate skeletonization
Abstract
Data from living and extinct faunas of primitive vertebrates imply very different scenarios for the origin and evolution of the dermal and oral skeletal developmental system. A direct reading of the evolutionary relationships of living primitive vertebrates implies that the dermal scales, teeth, and jaws arose synchronously with a cohort of other characters that could be considered unique to jawed vertebrates: the dermoskeleton is primitively composed of numerous scales, each derived from an individual dental papilla; teeth are primitively patterned such that they are replaced in a classical conveyor-belt system. The paleontological record provides a unique but complementary perspective in that: 1) the organisms in which the skeletal system evolved are extinct and we have no recourse but to fossils if we aim to address this problem; 2) extinct organisms can be classified among, and in the same way as, living relatives; 3) a holistic approach to the incorporation of all data provides a more complete perspective on early vertebrate evolution. This combined approach is of no greater significance than in dealing with the origin of the skeleton and, combined with recent discoveries and new phylogenetic analyses, we have been able to test and reject existing hypotheses for the origin of the skeleton and erect a new model in their place.
Copyright 2002 Wiley-Liss, Inc.
Similar articles
-
Skeletal histology of Bothriolepis canadensis (Placodermi, Antiarchi) and evolution of the skeleton at the origin of jawed vertebrates.J Morphol. 2009 Nov;270(11):1364-80. doi: 10.1002/jmor.10765. J Morphol. 2009. PMID: 19533688
-
Early evolution of vertebrate skeletal tissues and cellular interactions, and the canalization of skeletal development.J Exp Zool B Mol Dev Evol. 2006 May 15;306(3):278-94. doi: 10.1002/jez.b.21090. J Exp Zool B Mol Dev Evol. 2006. PMID: 16555304 Review.
-
Separate evolutionary origins of teeth from evidence in fossil jawed vertebrates.Science. 2003 Feb 21;299(5610):1235-6. doi: 10.1126/science.1079623. Science. 2003. PMID: 12595693
-
Histology of the heterostracan dermal skeleton: Insight into the origin of the vertebrate mineralised skeleton.J Morphol. 2015 Jun;276(6):657-80. doi: 10.1002/jmor.20370. Epub 2015 Mar 30. J Morphol. 2015. PMID: 25829358 Free PMC article.
-
Origin of dental occlusion in tetrapods: signal for terrestrial vertebrate evolution?J Exp Zool B Mol Dev Evol. 2006 May 15;306(3):261-77. doi: 10.1002/jez.b.21115. J Exp Zool B Mol Dev Evol. 2006. PMID: 16683226 Review.
Cited by
-
Endoskeletal mineralization in chimaera and a comparative guide to tessellated cartilage in chondrichthyan fishes (sharks, rays and chimaera).J R Soc Interface. 2020 Oct;17(171):20200474. doi: 10.1098/rsif.2020.0474. Epub 2020 Oct 14. J R Soc Interface. 2020. PMID: 33050779 Free PMC article.
-
Histology of "placoderm" dermal skeletons: Implications for the nature of the ancestral gnathostome.J Morphol. 2013 Jun;274(6):627-44. doi: 10.1002/jmor.20119. Epub 2013 Feb 2. J Morphol. 2013. PMID: 23378262 Free PMC article.
-
Wear, tear and systematic repair: testing models of growth dynamics in conodonts with high-resolution imaging.Proc Biol Sci. 2018 Sep 5;285(1886):20181614. doi: 10.1098/rspb.2018.1614. Proc Biol Sci. 2018. PMID: 30185642 Free PMC article.
-
Decay of vertebrate characters in hagfish and lamprey (Cyclostomata) and the implications for the vertebrate fossil record.Proc Biol Sci. 2011 Apr 22;278(1709):1150-7. doi: 10.1098/rspb.2010.1641. Epub 2010 Oct 14. Proc Biol Sci. 2011. PMID: 20947532 Free PMC article.
-
Evolution of a core gene network for skeletogenesis in chordates.PLoS Genet. 2008 Mar 21;4(3):e1000025. doi: 10.1371/journal.pgen.1000025. PLoS Genet. 2008. PMID: 18369444 Free PMC article.
Publication types
MeSH terms
LinkOut - more resources
Full Text Sources
