| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Palaeostylus (Pseudozygopleura) terebrus
Taxonomy
Pseudozygopleura (Pseudozygopleura) terebra was named by Knight (1930). Its type specimen is YPM 12966, a shell, and it is not a trace fossil. Its type locality is SL-1. Headwaters of Feefee Creek, north of Olive St. & west of Lindberg Blvd., 1.5 km northwest of Stratmann (Olivette), which is in a Moscovian offshore shale in the Appanoose Formation of Missouri.
It was recombined as Palaeostylus (Pseudozygopleura) terebrus by Yochelson and Saunders (1967).
It was recombined as Palaeostylus (Pseudozygopleura) terebrus by Yochelson and Saunders (1967).
Synonymy list
| Year | Name and author |
|---|---|
| 1930 | Pseudozygopleura (Pseudozygopleura) terebra Knight p. 44 figs. pl. 2 f. 5 |
| 1967 | Palaeostylus (Pseudozygopleura) terebrus Yochelson and Saunders p. 159 |
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.
†Palaeostylus (Pseudozygopleura) terebrus Knight 1930
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. B. Knight 1930 | Sub-cylindrical; sides slightly convex at neanic, straight at ephebic stages; whorl profile very gently rounded, slightly pendant and adpressed; sutures quite shallow; base markedly flattened; aperture subquadrate. The nucleus has not been seen. The first six or seven post-nepionic whorls carry transverse costae while the remaining four or five are entirely without ornamentation.
The transverse costae arise gradually at the upper suture, rise in height to a point a little below the middle of the whorl face, and, it may be safely assumed, die out shortly beneath the lower line of suture. No traces of coloration are to be seen. This species, combining small size with many, pendant whorls, sub-cylindrical form and flat base, falls rather close to P. pagoda and P. restis. It is distinguished by its partial loss of costation. It is also larger than the former and has finer, more numerous costae than the latter. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
| Source: c = class | |||||
| Reference: Kiessling 2004 | |||||