| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Bucanospira expansa
Taxonomy
Bucanospira expansa was named by Ulrich and Scofield (1897) [Bucanospira expansa Ulrich in Ulrich & Scofield 1897]. Its type specimen is USNM 45735, a shell, and it is a 3D body fossil. Its type locality is Brownsport, Wayne County, which is in a Ludfordian carbonate wackestone/shale in the Brownsport Formation of Tennessee.
Synonymy list
| Year | Name and author |
|---|---|
| 1897 | Bucanospira expansa Ulrich and Scofield |
| 1941 | Bucanospira expansa Knight pp. 61 - 62 figs. Plate 84, figures 3a-c |
| 1960 | Bucanospira expansa Knight et al. p. 299 figs. f. 196,1 |
| 2023 | Bucanospira expansa Wagner p. 5039 |
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.
†Bucanospira expansa Ulrich and Scofield 1897
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. B. Knight 1941 | Subturbinate, narrowly phaneromphalous gastropods of moderate size without a sinus, but, at certain growth stages, with a wide flaring expansion of the entire lip; whorl profile subcircular; sutures seemingly rather deep; nucleus unknown; base narrowly phaneromphalous; final whorl free at late stages of growth; lip seemingly thin and simple, seemingly entire and without sinuses or thickenings but, at certain stages that seemingly occur several times in the history of an individual, expanding to a wide, radially ribbed frill which is presumably resorbed before growth is resumed, the frill seemingly surrounding the entire aperture; ornamentation fine, even, transverse lirae and somewhat wider, low, revolving costae or ribs which are sometimes double and which continue onto the frill when it is present; shell seemingly very thin, its structure unknown. The holotype measures about 14 mm. in height, exclusive of the frill, and 16 mm. in width, with a pleural angle of about 70 degrees. |