Cataegis

Kaim, Andrzej, Jenkins, Robert G., Tanabe, Kazushige & Kiel, Steffen, 2014, Mollusks from late Mesozoic seep deposits, chiefly in California, Zootaxa 3861 (5), pp. 401-440: 410-411

publication ID

http://dx.doi.org/10.11646/zootaxa.3861.5.1

publication LSID

lsid:zoobank.org:pub:E62DB6C3-0C5F-4898-99C4-1BEC70DD1734

persistent identifier

http://treatment.plazi.org/id/03F4372E-FFEF-6844-FF34-071CFC44FEF7

treatment provided by

Plazi

scientific name

Cataegis
status

 

Cataegis   ? sp.

( Fig. 4 A –B View FIGURE 4. A – B )

Description. Relatively large low-spired turbiniform gastropod (> 20 mm in diameter). Protoconch not preserved. Shell consists of two layers, a thick inner layer that is often dissolved, and a brownish outer layer ornamented by six spiral ribs and numerous enhanced prosocyrtic growth lines. Two median spiral ribs are the strongest and the most widely spaced with slightly concave area in between. Base ornamented by six spiral lines and several enhanced growth lines with scaly appearance on internal shell surface. Umbilicus absent. Aperture not preserved.

Material and occurrence. A single large specimen (22.2 mm in diameter) is preserved as an inner mould (GZG.INV. 84972) and additional specimens are preserved as pieces of the shell adhering to the inner or outer moulds. All specimens are from Bear Creek (Valanginian, Early Cretaceous).

Remarks. Cataegis   ? sp. is a distinctive species in the Bear Creek seep deposit due to the scaly appearance of the shell base ornamentation and its relatively large size, though it never is completely preserved. The species resembles some cataegins in having a concave area in the median part of the shell flank. However, it is much narrower than in the other species attributed herein to Cataegis   as well as in the alleged neomphalid Lithomphalus enderlini described by Kiel & Campbell (2005).

Stratigraphic range. Valanginian (Early Cretaceous) to Recent.