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Heteroaspis stoermeri
Taxonomy
Eurypterus stoermeri was named by Novojilov (1959). It is not extant. Its type locality is Imaigda River, Taymyr Peninsula, which is in a Lochkovian paralic marl in the Zub Formation of the Russian Federation.
It was considered an invalid subgroup of Eurypterus by Dunlop et al. (2013); it was recombined as Heteroaspis stoermeri by Marshall et al. (2014) and Dunlop et al. (2020).
It was considered an invalid subgroup of Eurypterus by Dunlop et al. (2013); it was recombined as Heteroaspis stoermeri by Marshall et al. (2014) and Dunlop et al. (2020).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1959 | Eurypterus stoermeri Novojilov |
| 1972 | Heteroaspis novojilovi Størmer |
| 2001 | Diploaspis novojilovi Dunlop et al. |
| 2014 | Heteroaspis stoermeri Marshall et al. |
| 2020 | Heteroaspis stoermeri Dunlop et al. p. 16 |
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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.
†Heteroaspis stoermeri Novojilov 1959
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Invalid names: Heteroaspis novojilovi Størmer 1972 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. J. Marshall et al. 2014 | Diploaspididae with subquadrate carapace;
lateral eyes positioned centrilaterally upon trapezoidal ophthalmic ridge; Erieopterus-type ventral plates; epimera on posterior of buckler. Emended from Størmer (1972). |