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Bellerophon (Bellerophon) complanatus
Taxonomy
Bellerophon (Bellerophon) complanatus was named by Yochelson (1960). It is a 3D body fossil. Its type locality is USGS 9802, S of Highway 67, Coleman, which is in an Artinskian shallow subtidal lime mudstone/shale in the Admiral Formation of Texas.
Sister species lacking formal opinion data
Synonymy list
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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.
†Bellerophon (Bellerophon) complanatus Yochelson 1960
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. L. Yochelson 1960 | Bellerophontid gastropods with the upper surface gently curved and the lateral surfaces abruptly curving in to the umbilici; early growth stages unknown; upper whorl surface little curved, only gently arched to midline, bending down abruptly to the lateral slopes, there being a slight increase of curvature of the upper surface before this bending so that no true angulation is formed; lateral slopes nearly flat, inclined inward to a wide, shallow umbilicus; slit depth unknown; selenizone convex, raised just above the general shell surface; lateral lips straight, except for an extremely shallow, narrow, V-shaped sinus close to the selenizone, other apertural characteristics unknown; ornament, faint growth lines only. |
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 13.0 | 12.8 | 13.2 | 13.0 | 0.283 |
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| Source: g = genus, o = order, c = class | |||||
| References: Aberhan et al. 2004, Kiessling 2004 | |||||
Age range: Artinskian or 290.10000 to 279.30000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Artinskian | USA (Texas) | Bellerophon complanatus (type locality: 90007) |