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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Acanthoglypha affinis
Taxonomy
Streptis affinis was named by Reed (1909). It is the type species of Acanthoglypha.
It was recombined as Calliglypha affinis by Cocks (1978); it was recombined as Acanthoglypha affinis by Williams and Curry (1985).
It was recombined as Calliglypha affinis by Cocks (1978); it was recombined as Acanthoglypha affinis by Williams and Curry (1985).
Synonymy list
| Year | Name and author |
|---|---|
| 1909 | Streptis affinis Reed p. 151 figs. pl. 6, figs 14a, b. |
| 1978 | Calliglypha affinis Cocks p. 136 |
| 1985 | Acanthoglypha affinis Williams and Curry pp. 258 - 260 figs. 191-198 |
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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.
†Acanthoglypha affinis Reed 1909
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. S. Williams and G. B. Curry 1985 | Medium-sized, subquadrate Acanthoglypha; pedicle valve moderately to strongly convex, averaging 64% as long as wide and 60% as deep as long; brachial valve moderately convex, averaging 47% as long as wide and 47% as deep as long; external surfaces with dense radial and concentric arrays of fine and coarse bifurcating hollow spines with maximum diameters of 50 fim and 200 jum, respectively. |
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: base of the Castlemainian to the top of the Yapeenian or 471.30000 to 469.40000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Castlemainian - Yapeenian | Ireland | Acanthoglypha affinis (153922) |