| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Lutema
Taxonomy
Lutema was named by Stephenson (1941) [Sepkoski's age data: K Camp K Maes-l Sepkoski's reference number: 909].
It was reranked as Amuletum (Lutema) by Kosnik (2002).
It was assigned to Turritidae by Stephenson (1941); to Neogastropoda by Sepkoski (2002); to Amuletum by Kosnik (2002); and to Turridae by Bandel (1993), Kaim and Beisel (2005).
It was reranked as Amuletum (Lutema) by Kosnik (2002).
It was assigned to Turritidae by Stephenson (1941); to Neogastropoda by Sepkoski (2002); to Amuletum by Kosnik (2002); and to Turridae by Bandel (1993), Kaim and Beisel (2005).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1941 | Lutema Stephenson p. 373 |
| 1993 | Lutema Bandel p. 44 |
| 2002 | Amuletum (Lutema) Kosnik |
| 2002 | Lutema Sepkoski |
| 2005 | Lutema Kaim and Beisel p. 52 |
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.
G. †Lutema Stephenson 1941
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. W. Stephenson 1941 | Shell small, turreted. Spire about equal in height to the length of the aperture. Spiral angle 32 to 42 degrees. Protoconch of medium size, smooth, naticoid, coiled 2 or 3 times. Shoulder rather broad, broadly excavated, moderately steep, limited below by an obtuse shoulder angle. Body whorl broadly rounded on the periphery, broadly excavated on the base. Axials short, oblique, numbering 13 to 20, and may or may not be noded on the shoulder angle. Spirals numerous, narrow, weak, and may be practically wanting on the inflated part of the whorls.
Aperture long; outer lip broadly arched and thin; inner lip forming a thin callus on the parietal wall; anal notch of moderate depth, sharply rounded at inner end; canal narrow, deep, and straight or only slightly twisted. |
Measurements
No measurements are available
|
|
||||
|
|||||
|
|
||||
|
|
||||
| Source: f = family, c = class | |||||
| References: Kiessling 2004, Hendy et al. 2009 | |||||
Age range: base of the Middle Turonian to the top of the Danian or 93.90000 to 61.66000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Turonian | USA (Arizona) | L. hitzi (53504) | |
| Late/Upper Campanian | USA (Texas) | L. hubbardi (7472) L. hubbardi, L. simpsonensis (7482) | |
| Maastrichtian | USA (Texas) | L. geniculata, L. hubbardi, L. munda, L. simpsonensis (7480) L. hubbardi (7495) L. simpsonensis (7494) | |
| Danian | USA (Texas) | L. gracilis (205466) |