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Sulevorthis playfairi
Taxonomy
Orthis playfairi was named by Reed (1917).
It was recombined as Orthambonites playfairi by Reed (1917), Williams (1962) and Mitchell (1977); it was recombined as Sulevorthis playfairi by Candela and Harper (2014).
It was recombined as Orthambonites playfairi by Reed (1917), Williams (1962) and Mitchell (1977); it was recombined as Sulevorthis playfairi by Candela and Harper (2014).
Synonymy list
| Year | Name and author |
|---|---|
| 1917 | Orthambonites playfairi Reed p. 829 figs. pl. v, figs. 20--26, non figs. 27-32. |
| 1962 | Orthambonites playfairi Williams pp. 97 - 98 figs. Pl. VII, figs. 34, 41-43 |
| 1977 | Orthambonites playfairi Mitchell |
| 2014 | Sulevorthis playfairi Candela and Harper pp. Supplement 1 |
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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.
†Sulevorthis playfairi Reed 1917
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. Williams 1962 | Small, subcircular to subquadrate and unequally biconvex Orthambonites with a more convex pedicle valve about nine-tenths as long as wide and less than one-third as deep as long; ornamented by fine, concentric lamellae and 13-17 angular costae, most commonly 14-16, with art average wavelength of just less than 1 mm. at 5 mm. antero-median to the dorsal umbo: ventral muscle-scar subcordate, less than two-fifths as long as adult valves; dorsal adductor field oval extending anteriorly for over onehalf the length of the brachial valve and divided by a strong, longer, median septum. |
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range: Cheneyan or 452.50000 to 451.30000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Rocklandian - Kirkfieldian | United Kingdom (Northern Ireland) | Orthambonites playfairi (89157) | |
| Cheneyan | United Kingdom (Scotland) | Orthambonites playfairi (164412 164950 164953) Sulevorthis playfairi (219884) |