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Anisopleurella balclatchiensis
Taxonomy
Plectambonites quinquecostata balclatchiensis was named by Reed (1917).
It was recombined as Anisopleurella balclatchiensis by Williams (1962) and Candela and Harper (2014).
It was recombined as Anisopleurella balclatchiensis by Williams (1962) and Candela and Harper (2014).
Synonymy list
| Year | Name and author |
|---|---|
| 1917 | Plectambonites quinquecostata balclatchiensis Reed pp. 877 - 878 figs. Plate XIV, figs. 4-9 |
| 1962 | Anisopleurella balclatchiensis Williams pp. 185 - 187 figs. Pl. XVII, figs. 36, 37, 40, 41 ; P1. XVIII, figs. 1-3 |
| 2014 | Anisopleurella balclatchiensis 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.
†Anisopleurella balclatchiensis Reed 1917
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. R. C. Reed 1917 | Shell transverse, nearly or quite twice as wide as long, semicircular to semielliptical ; cardinal angles acute, sometimes slightly produced. Pedicle-valve uniformly and gently convex, rarely depressed or flattened towards lateral angles ; beak small, acute, not swollen, slightly incurved, scarcely projecting above hinge-line. Brachial valve flat or gently concave. Surface of pedicle-valve with 3 main equidistant radii diverging at 45° apart, forming a distinct median group ; interspaces very delicately striated. Internal characters insufficiently known. | |
| A. Williams 1962 | Semicircular to subquadrate, eoncavo-convex Anisopleurella with the pedicle valve about one-half as long as the maximum width along the hinge-line and about two-fifths as deep as long; radial ornamentation consisting of very fine low costellae, about 12 per millimetre, and a triad of thick conspicuous costae, one median and two sublateral, each commonly occupying the crest of a low wide undulation in adult specimens, other thickened costellae rarely developed peripherally; divergent ventral diductor scars over two-fifths as long as the pedicle valve and almost two-thirds as long as wide; dorsal septal apparatus nearly two-thirds as long as wide. |
Measurements
No measurements are available
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| Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013, Hendy 2009 | |||||
Age range: base of the Aurelucian to the top of the Burrellian or 458.40000 to 452.50000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Aurelucian | United Kingdom (Scotland) | Anisopleurella balclatchiensis (165033) | |
| Burrellian | United Kingdom (Scotland) | Anisopleurella balclatchiensis (165043 165046 165047 192744) |