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Doryaspis
Taxonomy
Doryaspis was named by White (1935). It is not extant. Its type is Scaphaspis nastorthi.
It was assigned to Doryaspidinae by Denison (1970); to Protopteraspididae by Blieck (1984); to Doryaspididae by Pernègre (2003); and to Doryaspidae by Randle and Sansom (2017).
It was assigned to Doryaspidinae by Denison (1970); to Protopteraspididae by Blieck (1984); to Doryaspididae by Pernègre (2003); and to Doryaspidae by Randle and Sansom (2017).
Synonymy list
| Year | Name and author |
|---|---|
| 1935 | Doryaspis White |
| 1970 | Doryaspis Denison p. 37 |
| 1984 | Doryaspis Blieck p. 105 |
| 2003 | Doryaspis Pernègre p. 736 |
| 2017 | Doryaspis Randle and Sansom p. 596 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Doryaspis White 1935
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†Doryaspis arctica Pernègre 2003
†Doryaspis groenhorgensis Pernegre 2005
†Doryaspis nathorsti Lankester 1884
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Invalid names: Scaphaspis nathorsti Lankester 1884 [replaced]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. H. Denison 1970 | An abberant pteraspid with the rostral plate and truncate anteriorly, and underlain by a long pseudorostrum attached to the ventral shield, and with the mouth opening antero-dorsally between the rostrum and pseudorostrum. The cornual plates project far laterally. The ornament consists of concentric
ridges subdivided by a system of radiating grooves |
Measurements
No measurements are available
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| Source: subp = subphylum, p = phylum | |||||
| References: Carroll 1988, Kiessling 2004 | |||||
Age range: base of the Lochkovian to the top of the Pragian or 419.62000 to 410.62000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Lochkovian | Norway | D. sp. (237823 237826) | |
| Pragian | Svalbard and Jan Mayen | D. nathorsti (238091 238092) | |
| Pragian - Emsian | Norway | D. arctica, D. groenhorgensis (233178) D. groenhorgensis (239307) | |
| Pragian - Emsian | Svalbard and Jan Mayen | D. arctica (238095) D. nathorsti, D. arctica (237853) |