Cryptopecten, Dall, Bartsch & Rehder, 1938

Dijkstra, Henk H. & Maestrati, Philippe, 2010, Pectinoidea (Mollusca, Bivalvia, Propeamussiidae, Entoliidae and Pectinidae) from the Austral Islands (French Polynesia), Zoosystema 32 (2), pp. 333-358 : 351

publication ID

https://doi.org/10.5252/z2010n2a6

DOI

https://doi.org/10.5281/zenodo.4521114

persistent identifier

https://treatment.plazi.org/id/D75887E7-FFCF-0750-170C-FF5DF936FB3A

treatment provided by

Felipe (2021-02-08 18:39:48, last updated 2024-11-26 04:04:24)

scientific name

Cryptopecten
status

 

Cryptopecten sp. A

( Fig. 5A View FIG )

MATERIAL EXAMINED. — Récif Neilson. BENTHAUS, stn DW 1925, 27°00’S, 146°05’W, 560-790 m, 1 rv.

DISTRIBUTION. — Austral Islands, only a single valve at 560 m depth.

REMARKS

The present specimen somewhat resembles Cryptopecten phrygium ( Dall, 1886) , from the tropical western Atlantic, in having an identical sculpture of longitudinal hollow sections on both sides of the primary radial ribs and intercostal commarginal lamellae. A similar sculpture also exists in Cryptopecten vesiculosus (Dunker, 1877) , from southern Japan, and in C. bullatus and C. nux ( Hayami 1984) . A delicate shell layer covers these hollow sections ( Hayami 1984: pl. 13, fig. 1c), but in eroded specimens this shell layer is often lacking and a longitudinal groove appears on each side of the main ribs. The present specimen is considerably larger in size than the other Cryptopecten species ( Cryptopecten sp. A 57 mm, C. phrygium 43 mm, C. vesiculosus 34 mm, C. bullatus 25 mm, and C. nux 20 mm in height) ( Hayami 1984), and strongly posteriorly oblique (other Cryptopecten species are more circular). Because a single valve is available, this new species is not named here.

DALL W. H. 1886. - Report on the results of dredging [...] in the Gulf of Mexico by the U. S. coast guard survey steamer Blake [...]. Report on the mollusca. Part 1. Branchiopodes and Pelecypodes. Bulletin of the Museum of Comparative Zoology, Harvard College 12 (6): 171 - 318.

HAYAMI I. 1984. - Natural history and evolution of Cryptopecten (a Cenozoic-Recent pectinid genus). The University Museum, The University of Tokyo, Bulletin 24: 1 - 149.

Gallery Image

FIG. 5. — A, Cryptopecten sp. A, external view of the right valve; B, Anguipecten lamberti (Souverbie, 1874), external view of the left valve; C, Anguipecten picturatus Dijkstra, 1995, external view of the left valve; D, Anguipecten superbus (Sowerby II, 1842), external view of the right valve; E, Glorichlamys elegantissima (Deshayes, 1863), external view of the right valve; F, Gloripallium spiniferum, (Sowerby I, 1835), external view of the right valve; G, H, Mirapecten mirificus (Reeve, 1853), external views of the left and right valves.

Kingdom

Animalia

Phylum

Mollusca

Class

Bivalvia

Order

Pectinoida

SuperFamily

Pectinoidea

Family

Pectinidae