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Hyphantozyga gracilis
Taxonomy
Hemizyga (Hyphantozyga) gracilis was named by Knight (1930). Its type specimen is YPM 13003, a shell, and it is not a trace fossil. Its type locality is SL-1. Headwaters of Feefee Creek, north of Olive St. & west of Lindberg Blvd., 1.5 km northwest of Stratmann (Olivette), which is in a Moscovian offshore shale in the Appanoose Formation of Missouri. It is the type species of Hyphantozyga, Hemizyga (Hyphantozyga).
It was recombined as Plocezyga (Hyphantozyga) gracilis by Hoare and Sturgeon (1980); it was recombined as Ploceozyga (Hyphantozyga) gracilis by Pan and Erwin (2002); it was recombined as Hyphantozyga gracilis by Wagner (2023).
It was recombined as Plocezyga (Hyphantozyga) gracilis by Hoare and Sturgeon (1980); it was recombined as Ploceozyga (Hyphantozyga) gracilis by Pan and Erwin (2002); it was recombined as Hyphantozyga gracilis by Wagner (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1930 | Hemizyga (Hyphantozyga) gracilis Knight p. 73 figs. pl. 5 f. 5 |
| 1980 | Hemizyga (Hyphantozyga) gracilis Hoare and Sturgeon pp. 164 - 165 figs. pl. 1 f. 15; table 2 |
| 1980 | Plocezyga (Hyphantozyga) gracilis Hoare and Sturgeon p. 1101 |
| 2001 | Hemizyga (Hyphantozyga) gracilis Kues and Batten p. 77 |
| 2002 | Ploceozyga (Hyphantozyga) gracilis Pan and Erwin p. 25 |
| 2023 | Hyphantozyga gracilis Wagner p. S5366 |
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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.
†Hyphantozyga gracilis Knight 1930
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Desmoinesian to the top of the Moscovian or 312.80000 to 307.00000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Moscovian | USA (Missouri) | Hemizyga gracilis (type locality: 69773) | |
| Desmoinesian | USA (Ohio) | Gamizyga gracilis (72004) |