| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Orthorhynchyllion
Taxonomy
Orthorhynchyllion was named by Jin (1989). Its type is Rhynchotrema prinstanum.
It was assigned to Orthorhynchulidae by Jin (1989).
It was assigned to Orthorhynchulidae by Jin (1989).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1989 | Orthorhynchyllion Jin p. 72 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Jin 1989 | Shell medium-sized, subtriangular. Hingeline short. Triangular interarea on both valves very small. Pedicle umbo narrow, apsacline, with suberect beak. Pedicle sulcus and brachial fold broad, developed in anterior half of shell. Costae fine, simple. Dental plates high, short. Septalium relatively large, with well-definedseptalial plates. Hinge plates strong. Median septum thin. Cardinal process thick and high, with branching crest. Crural bases forming conspicuous ridges protruding into septalium. Crura radulifer. |
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: Hirnantian or 445.20000 to 443.40000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Hirnantian | Canada (Quebec) | O. prinstanum (158771 158773 163767) |