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Protopteraspis
Taxonomy
Protopteraspis was named by Leriche (1924).
It was assigned to Pteraspidinae by Denison (1970); to Pteraspididae by Blieck et al. (2002); and to Protopteraspididae by Blieck (1984) and Randle and Sansom (2017).
It was assigned to Pteraspidinae by Denison (1970); to Pteraspididae by Blieck et al. (2002); and to Protopteraspididae by Blieck (1984) and Randle and Sansom (2017).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1924 | Protopteraspis Leriche p. 149 |
| 1950 | Pteraspis (Simopteraspis) White p. 76 |
| 1970 | Protopteraspis Denison p. 3 |
| 1970 | Pteraspis (Simopteraspis) Denison p. 76 |
| 1984 | Protopteraspis Blieck p. 105 |
| 2002 | Protopteraspis Blieck et al. p. 812 |
| 2017 | Protopteraspis 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. †Protopteraspis Leriche 1924
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Invalid names: Simopteraspis Denison 1970 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. H. Denison 1970 | Small to medium-sized pteraspids. The rostrum short and bluntly rounded, with its ventral preoral surface short and lacking a preoral field. 1 Branchial openings well in advance of the postero-lateral corners of the dorsal shield, and bounded by branchial and cornual plates (fig. 1). |
Measurements
No measurements are available
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| Source: subp = subphylum, p = phylum | |||||
| Reference: Kiessling 2004 | |||||
Age range: Lochkovian or 419.20000 to 410.80000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Lochkovian | Norway | P. sp. (26929) | |
| Lochkovian | France | P. sp. (26983) | |
| Lochkovian | Canada (Nova Scotia) | P. sp. (14201) | |
| Lochkovian | Russian Federation | P. sp. (90330) |