Austroptyctodus: Difference between revisions
Content deleted Content added
No edit summary |
Apokryltaros (talk | contribs) No edit summary |
||
| Line 16: | Line 16: | ||
''Austroptyctodus gardineri'' is a small [[ptyctodontid]] [[placoderm]] fish from the Upper Devonian [[Gogo Formation]] of Western [[Australia]]. First described by Miles & Young (1977)<ref>Miles, R.S. & Young, G.C. 1977. Placoderm interrelationships reconsidered in the light of new ptyctodontids from Gogo Western Australia. Linn. Soc. Symp. Series 4: 123-198.</ref> as a new species of the German genus ''[[Ctenurella]]''. Long (1997)<ref>Long, J.A. 1997. Ptyctodontid fishes from the Late Devonian Gogo Formation, Western Australia, with a revision of the German genus Ctenurella Orvig 1960. Geodiversitas 19: 515-555.</ref> redescribed the German material and found major differences in the skull roof pattern so assigned it to a new genus, Austroptyctodus.This genus lacks spinal plates and has ''[[Ptyctodus]]''-like toothplates. |
''Austroptyctodus gardineri'' is a small [[ptyctodontid]] [[placoderm]] fish from the Upper Devonian [[Gogo Formation]] of Western [[Australia]]. First described by Miles & Young (1977)<ref>Miles, R.S. & Young, G.C. 1977. Placoderm interrelationships reconsidered in the light of new ptyctodontids from Gogo Western Australia. Linn. Soc. Symp. Series 4: 123-198.</ref> as a new species of the German genus ''[[Ctenurella]]''. Long (1997)<ref>Long, J.A. 1997. Ptyctodontid fishes from the Late Devonian Gogo Formation, Western Australia, with a revision of the German genus Ctenurella Orvig 1960. Geodiversitas 19: 515-555.</ref> redescribed the German material and found major differences in the skull roof pattern so assigned it to a new genus, Austroptyctodus.This genus lacks spinal plates and has ''[[Ptyctodus]]''-like toothplates. |
||
The most significant discovery about ''Austroptyctodus'' is that one specimen depicts a mother with 3 unborn embryos inside her, showing that like ''[[Materpiscis]]'', also from Gogo, this genus was a live bearer,and reproduced through [[internal fertilization]]<ref>Long, J.A., Trinajstic, K.,Young, G.C. & Senden, T. 2008. Live birth in the Devonian period. Nature 453: 650-653.</ref>. |
The most significant discovery about ''Austroptyctodus'' is that one specimen depicts a mother with 3 unborn embryos inside her, showing that like ''[[Materpiscis]]'', also from Gogo, this genus was a [[Vivipary|live bearer]],and reproduced through [[internal fertilization]]<ref>Long, J.A., Trinajstic, K.,Young, G.C. & Senden, T. 2008. Live birth in the Devonian period. Nature 453: 650-653.</ref>. |
||
==References== |
==References== |
||
Revision as of 21:48, 18 August 2012
| Austroptyctodus Temporal range: Late Frasnian
| |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Order: | |
| Genus: | Austroptyctodus
|
| Species: | A. gardineri
|
| Binomial name | |
| Austroptyctodus gardineri | |
| Synonyms | |
| |
Austroptyctodus gardineri is a small ptyctodontid placoderm fish from the Upper Devonian Gogo Formation of Western Australia. First described by Miles & Young (1977)[1] as a new species of the German genus Ctenurella. Long (1997)[2] redescribed the German material and found major differences in the skull roof pattern so assigned it to a new genus, Austroptyctodus.This genus lacks spinal plates and has Ptyctodus-like toothplates.
The most significant discovery about Austroptyctodus is that one specimen depicts a mother with 3 unborn embryos inside her, showing that like Materpiscis, also from Gogo, this genus was a live bearer,and reproduced through internal fertilization[3].
References
- ^ Miles, R.S. & Young, G.C. 1977. Placoderm interrelationships reconsidered in the light of new ptyctodontids from Gogo Western Australia. Linn. Soc. Symp. Series 4: 123-198.
- ^ Long, J.A. 1997. Ptyctodontid fishes from the Late Devonian Gogo Formation, Western Australia, with a revision of the German genus Ctenurella Orvig 1960. Geodiversitas 19: 515-555.
- ^ Long, J.A., Trinajstic, K.,Young, G.C. & Senden, T. 2008. Live birth in the Devonian period. Nature 453: 650-653.
 | This article about a placoderm is a stub. You can help Wikipedia by expanding it. |