Fossil juvenile cyathaspididae (heterostraci) reveal rapid cyclomorial development of the dermal skeleton

Journal of Vertebrate Paleontology

Volumn 23, Issue 2, 2003, Pages 483-487

  Greeniaus, Jeffrey W ^a   Wilson, Mark V H ^a  

^a UNIVERSITY OF ALBERTA   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 85010569158     PISSN: 02724634     EISSN: 19372809     Source Type: Journal    
DOI: 10.1671/0272-4634(2003)023[0483:FJCHRR]2.0.CO;2     Document Type: Note

References (21)

1. Denison, R. H. 1952. Early Devonian fishes from Utah. Part I. Osteostraci. Fieldiana: Geology 11:263-287
2. Denison, R. H. 1960. Fishes of the Devonian Holland Quarry Shale of Ohio. Fieldiana: Geology 11:555-613
3. Denison, R. H. 1964. The Cyathaspididae: a family of Silurian and Devonian jawless vertebrates. Fieldiana: Geology 13:307-473
4. Denison, R. H. 1973. Growth and wear of the shield in Pteraspididae. Palaeon-tographica Abt. A, 143:1-10
5. Dineley, D. L., and E. J. Loeffler. 1976. Ostracoderm faunas of the Delorme and associated Siluro-Devonian formations, North West Territories, Canada. Palaeontological Association Special Papers in Palaeontology 18:1214
6. Elliott, D. K. 1983a. A new subfamily of the Pteraspididae (Agnatha, Heterostraci) from the Upper Silurian and Lower Devonian of Arctic Canada. Palaeontology 27:169-197
7. Elliott, D. K. 1983b. New Pteraspididae (Agnatha, Heterostraci) from the Lower Devonian of Northwest Territories, Canada. Journal of Vertebrate Paleontology 2:389-406
8. Fahlbusch, K. 1957. Pteraspis dunensis (Roemer), eine Neubearbeitung der Pteraspidenfunde (Agnathen) con Overath (Bez. Koln). Pa-laeontographica Abt. A, 108:1-56
9. Janvier, P. 1996. Early Vertebrates. Oxford Monographs on Geology and Geophysics 33, Oxford, 393 pp
10. Orvig, T. 1968. The dermal Skeleton; general considerations; pp. 373-397 in T. Orvig (ed.), Nobel Symposium 4, Current Problems of Lower Vertebrate Phylogeny. Interscience Publishers, New York
11. Pellerin, N. M., and M. V. H. Wilson. 1995. New evidence for structure of Irregulareaspididae tails from Lochkovian beds of the Delorme Group, Mackenzie Mountains, Northwest Territories, Canada. Geobios 19:45-50
12. Soehn, K. L., and M. V. H. Wilson. 1995. Intraspecific variation and growth anomalies in Wenlockian (Silurian) Cyathaspidiformes (Heterostraci, Agnatha) from Canada. Geobios 19:71-77
13. Soehn, K. L., G. E Hanke, T. Marss, and M. V. H. Wilson. 2000. Preliminary vertebrate biostratigraphy of the Avalanche Lake section (Wenlock, Silurian), southern Mackenzie Mountains, N.W.T., and review of northwestern Canadian vertebrate localities of Silurian age. Courier Forschungsinstitut Senckenberg 233:129-155
14. Stensiô, E. A. 1958. Les cyclostomes fossiles ou ostracodermes; pp. 173-425 in P. Grassé (éd.), Traité de Zoologie. Masson, Paris
15. Tarlo, L. B. 1960. The Downtonian ostracoderm Corvaspis kingi Woodward, with notes on the development of dermal plates in the Heterostraci. Palaeontology 3:217-226
16. Tarlo, L. B. 1964. A review with descriptions of new material from the Lower Devonian of Poland I, General Part. Palaeontologica Polonica 13:1-135
17. Tarrant, P. R. 1991. The ostracoderm Phialaspis from the Lower Devonian of the Welsh Borderland and South Wales. Palaeontology 34:399-438
18. White, E. I. 1973. Form and growth in Belgicaspis (Heterostraci). Pa-laeontographica Abt. A, 143:11-24
19. Wilson, M. V. H., and M. W. Caldwell. 1993. New Silurian and Devonian fork-tailed ‘thelodonts’ are jawless vertebrates with stomachs and deep bodies. Nature 361:422-444
20. Wilson, M. V. H., and M. W. Caldwell. 1998. The Furcacaudiformes: a new order of jawless vertebrates with thelodont scales, based on articulated Silurian and Devonian fossils from Northern Canada. Journal of Vertebrate Paleontology 18:10-29
21. Wilson, M. V. H., G. E Hanke, and K. L. Soehn. 2000. Diversity and age of the Devonian vertebrate assemblage at MOTH, Mackenzie Mountains, Northwest Territories, Canada; pp. 137-141 in A. Antoshkina, E. Malysheva, and M. V. H. Wilson (eds.), Pan-Arctic Palaeozoic Tectonics, Evolution of Basins and Faunas. IGCP 406 Circum-Arctic Lower-Middle Palaeozoic Vertebrate Palaeontology and Biostratigraphy. Ichthyolith Issues Special Publication 6