| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Sphenotus pisinnus
Taxonomy
Sphenotus pisinnus was named by Hoare et al. (1989). Its type specimen is USNM 435881, a shell (right valve), and it is not a trace fossil. Its type locality is Loc. 1. USGS 14369. Road cut on se side US 65, 0.8 km sw of Peyton Creek Bridge, which is in a Serpukhovian offshore grainstone/shale in the Imo Formation of Arkansas.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1989 | Sphenotus pisinnus Hoare et al. p. 599 fig. 6.27–6.31 |
| 1993 | Sphenotus pisinnus Hoare p. 390 fig. 7.1 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
†Sphenotus pisinnus Hoare et al. 1989
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. D. Hoare 1993 | Sphenotus with subparallel dorsal and ventral margins; anterior margin strongly convex; posterior margin elongately truncate; beaks depressed, located about one-fifth length from anterior margin; distinct umbonal ridge extends to posteroventral extremity; surface ornamented by faint growth lines. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Hendy 2009 | |||||
Age range: Serpukhovian or 330.90000 to 323.20000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Serpukhovian | USA (West Virginia) | Sphenotus pisinnus (56142) | |
| Serpukhovian | USA (Arkansas) | Sphenotus pisinnus (type locality: 5517) |