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Oligorhynchia conybearei
Taxonomy
Camarella conybearei was named by Reed (1917) [Camarella ? Conybearei
figs. 23, 24 = Oligorhynchia bifurcata Cooper 1956 (Williams 1962).].
It was recombined as Oligorhynchia conybearei by Williams (1962) and Candela and Harper (2014).
It was recombined as Oligorhynchia conybearei by Williams (1962) and Candela and Harper (2014).
Synonymy list
| Year | Name and author |
|---|---|
| 1917 | Camarella conybearei Reed pp. 941 - 942 figs. Plate XXII, figs. 19-22, non figs. 23, 24 |
| 1962 | Oligorhynchia conybearei Williams p. 239 figs. Pl. XXIV, figs. 25, 32, 33 |
| 2014 | Oligorhynchia conybearei 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.
†Oligorhynchia conybearei Reed 1917
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. R. C. Reed 1917 | Shell small, elongate, oval to subtrigonal, posteriorly pointed, anteriorly rounded, with long sloping shoulders more than half the length of shell; anterior margins of valves meeting in deep zigzag junction. Pedicle-valve with small beak acutely pointed at about 30° ; surface of valve occupied by two pairs of large rounded or subangular nearly equidistant plications, the middle pair larger than the lateral pair (but all continuous from beak to margin). Brachial valve with smaller lower more obtuse beak than in opposite valve ; surface occupied by a median rounded plication arising in front of beak, and a pair of larger more elevated lateral plications similar to those on other valve and continuous from beak to margin. General surface of both valves marked by regular rather sublamellose concentric striae. | |
| A. Williams 1962 | Subtrigonal, biconvex Oligorhynchia commonly wider than long with the maximum width attained at about 2.5 mm. from the umbo of the pedicle valve, which is almost one-quarter as deep as long; shell ornamented by angular costae with 1 median and 2 flanking lateral ones in the brachial valve and 2 complementary pairs in the pedicle valve, the inner pair arising by bifurcation of a median umbonal ridge about 0.7 mm. long; dental lamellae long and narrowly divergent; crural bases rather massive and attached to a divided, unsupported hinge-plate. |
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: Burrellian or 456.60000 to 452.50000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Burrellian | United Kingdom (Scotland) | Oligorhynchia conybearei (165047 192745) |