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Pteraspis
Taxonomy
Pteraspis was named by Kner (1847) [Sepkoski's age data: D Gedi-u D Emsi-l Sepkoski's reference number: 2]. It is not extant.
It was assigned to Cephalaspidae by Huxley (1861); to Pteraspidae by Hay (1902), Bryant (1932) and Jordan (1963); to Pteraspidinae by Denison (1970); to Pteraspididae by Woodward (1891) and Blieck (1984); to Pteraspidomorphes by Sepkoski (2002); and to Pteraspidoidei by Randle and Sansom (2017).
It was assigned to Cephalaspidae by Huxley (1861); to Pteraspidae by Hay (1902), Bryant (1932) and Jordan (1963); to Pteraspidinae by Denison (1970); to Pteraspididae by Woodward (1891) and Blieck (1984); to Pteraspidomorphes by Sepkoski (2002); and to Pteraspidoidei by Randle and Sansom (2017).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1847 | Pteraspis Kner |
| 1861 | Pteraspis Huxley p. 37 |
| 1891 | Pteraspis Woodward p. 159 |
| 1902 | Pteraspis Hay p. 339 |
| 1932 | Pteraspis Bryant p. 232 |
| 1958 | Plesiopteraspis Stensio p. 265 |
| 1963 | Pteraspis Jordan p. 585 |
| 1970 | Pteraspis Denison p. 4 |
| 1984 | Pteraspis Blieck p. 105 |
| 2002 | Pteraspis Sepkoski |
| 2017 | Pteraspis Randle and Sansom p. 597 |
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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. †Pteraspis Kner 1847
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†Pteraspis crouchi Lankester 1865
†Pteraspis dunensis Roemer 1854
†Pteraspis rostrata toombsi White 1935
Invalid names: Plesiopteraspis Stensio 1958 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. H. Denison 1970 | Moderate-sized pteraspids. The rostrum somwhat elongate and with a preoral field developed on at least the posterior part of its ventral preoral surface. Branchial openings well in advance of the postero-lateral corners of the dorsal shield, and bounded by branchial and well-developed cornual plates. |
Measurements
No measurements are available
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| Source: subp = subphylum, p = phylum | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Lochkovian to the top of the Eifelian or 419.20000 to 387.70000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Lochkovian | Ukraine | P. major, P. rostrata (90349) P. podolicus, P. kneri, P. rostrata (90350) | |
| Lochkovian | United Kingdom (England) | P. rostrata (10679) P. sp. (26918) | |
| Lochkovian | United Kingdom (Herefordshire) | P. jackana, P. crouchi (201736) | |
| Lochkovian - Pragian | Ukraine | P. sp. (23447) | |
| Pragian | Ukraine | P. major (90348) | |
| Early/Lower Emsian | Germany (Gemuenden) | P. dunensis (26903) | |
| Eifelian | Brazil (Para) | P. sp. (37137) |