Hollardosteus
Hollardosteus Temporal range: Eifelian | |
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reconstruction as a dunkleosteid | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Placodermi |
Order: | Arthrodira |
Suborder: | Brachythoraci |
Family: | incertae sedis |
Genus: | Hollardosteus |
Species: | H. marocanus |
Binomial name | |
Hollardosteus marocanus Lehman, 1976 |
Hollardosteus marocanus is a brachythoracid arthrodire placoderm from the Middle Devonian of Morocco. Its scrappy remains were found in Eifelian-aged strata from the Tafilat-Maider Valley.[1]
The inferognathal plate has a well-developed anterior tooth (prong), very similar in form to the inferognathals of the dunkleosteids. However, the dermal surface of the armor is decorated with a pattern of large, crowded tubercules totally unlike the smooth dermal surfaces of dunkleosteid armors. This mix of peculiar features leaves H. marocanus placed as "Arthrodira incertae sedis,"[1] at least until more complete specimens are found.
References
- ^ a b Long, John (editor) (1993). Palaeozoic Vertebrate Biostratigraphy and Biogeography. Baltimore: The Johns Hopkins University Press. p. 148. ISBN 0-8018-4779-6.
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has generic name (help)
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Acanthothoraci* |
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Petalichthyida |
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Ptyctodontida |
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Rhenanida |
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Antiarchi |
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Arthrodira |
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Others |
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