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Gyroplacosteus
Taxonomy
Gyroplacosteus was named by Obrutschev (1930) [Sepkoski's age data: D Fras-l Sepkoski's reference number: 521]. It is not extant.
It was assigned to Holonematidae by Denison (1978); and to Arthrodira by Sepkoski (2002).
It was assigned to Holonematidae by Denison (1978); and to Arthrodira by Sepkoski (2002).
Species
Synonymy list
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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. †Gyroplacosteus Obrutschev 1930
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†Gyroplacosteus butovi Obruchev 1932
†Gyroplacosteus panderi Obruchev 1932
†Gyroplacosteus vialowi Kulczycki 1957
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, subp = subphylum | |||||
| Reference: Carroll 1988 | |||||
Age range: Middle Frasnian or 379.00000 to 375.20000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Frasnian | Poland (Swietokrzyskie Voivodship) | G. sp. (226394) |