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Pseudomyona
Taxonomy
Pseudomyona was named by Runnegar (1983) [Sepkoski's age data: Cm uMid-l Cm Dres Sepkoski's reference number: 543]. Its type is Myona queenslandica.
It was assigned to Tuarangioida by Sepkoski (2002); to Helcionellidae by Gubanov et al. (2004); and to Pseudomyonidae by Peel (2021).
It was assigned to Tuarangioida by Sepkoski (2002); to Helcionellidae by Gubanov et al. (2004); and to Pseudomyonidae by Peel (2021).
Species
Synonymy list
Year | Name and author |
---|---|
1983 | Pseudomyona Runnegar p. 140 |
2002 | Pseudomyona Sepkoski |
2004 | Pseudomyona Gubanov et al. p. 11 |
2021 | Pseudomyona Peel p. 200 |
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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. †Pseudomyona Runnegar 1983
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†Pseudomyona groenlandica Peel 2021
†Pseudomyona queenslandica Runnegar and Jell 1976
Diagnosis
Reference | Diagnosis | |
---|---|---|
J. S. Peel 2021 | Pseudobivalved, with comarginal ornamentation continuous across the dorsum; bilaterally symmetrical, with dorsal plane of symmetry separating the lateral surfaces. Dshaped in lateral view with the straight dorsal hinge line interupted by a swollen early growth stage located at about one third of the distance from the subapical margin to the supraapical margin. Inner surface with prominent grooves (ridges on the internal mould) on the dorsal area extending from alongside the early growth stage to each extremity. Teeth on the dorsal margin of each lateral surface forms pits on the internal mould; subapically, usually a single deep pit (halfpegma), but supraapically a single pit or series of up to 10 pits representing interdigitating teeth. |
Measurements
No measurements are available
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Source: c = class | |||||
Reference: Kiessling 2004 |
Age range: Floran or 507.00000 to 505.00000 Ma
Collections (6 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Solvan | Russian Federation (Siberia) | P. queenslandica (49431) | |
Marjumian | Greenland | P. groenlandica (219689) P. queenslandica (219688) | |
Floran | Australia (Queensland) | Myona queenslandica (56809 56810) P. queenslandica (93409) |