| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Gyrotropidae
Taxonomy
Gyrotropidae was named by Bandel and Dockery (2012).
It was assigned to Calyptraeoidea by Bandel and Dockery (2012).
It was assigned to Calyptraeoidea by Bandel and Dockery (2012).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 2012 | Gyrotropidae Bandel and Dockery pp. 97 - 98 |
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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| K. Bandel and D. T. Dockery 2012 | The shell has a short spire, rapidly expanding whorls, and sculpture consisting of a sharp spiral keel, a nearly quadrate aperture with a smooth inner lip, and a sinuous umbilicus. The body whorl has two additional keels that are covered by succeeding whorls (WENZ, 1938: fig. 2624). The family is based on the genus Gyrotropis with the type species Gyrotropis squamosa GABB, 1876, from the Ripley Formation. This species has nearly two rounded protoconch whorls, with uniform, fine tubercles on a smooth surface, and a ridge above the suture. The first whorl measures about 0.3 mm in diameter. The second whorl has a median, spine-like projection of the outer lip. The ornament, size and construction of the protoconch present evidence for a larval stage in the ontogeny of the type species of the family. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
| Source: superf = superfamily, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range: base of the Middle Turonian to the top of the Campanian or 93.50000 to 72.10000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Turonian | USA (Arizona) | Gyrotropis nationsi (53504) | |
| Campanian | USA (North Carolina) | Gyrotropis kerri (7612) Gyrotropis sp. (7611 7624) |