Ylistrum Mynhardt & Alejandrino, 2014

Dijkstra, Henk H. & Beu, Alan G., 2018, Living Scallops of Australia and Adjacent Waters (Mollusca: Bivalvia: Pectinoidea: Propeamussiidae, Cyclochlamydidae and Pectinidae), Records of the Australian Museum (Rec. Aust. Mus.) 70 (2), pp. 113-330 : 207

publication ID

https://doi.org/ 10.3853/j.2201-4349.70.2018.1670

publication LSID

lsid:zoobank.org:pub:8084C----

DOI

https://doi.org/10.5281/zenodo.5305927

persistent identifier

https://treatment.plazi.org/id/039A87AD-F847-361A-FC93-2C57FB54FAB3

treatment provided by

Felipe

scientific name

Ylistrum Mynhardt & Alejandrino, 2014
status

 

Ylistrum Mynhardt & Alejandrino, 2014 View in CoL

Ylistrum Mynhardt & Alejandrino View in CoL in Mynhardt et al., 2014: 407. Type species (by original designation): Pecten balloti Bernardi, 1861 View in CoL ; Pliocene to living, Southwest Pacific.

Diagnosis. Amusiini with (sub)circular shape, up to c. 140 mm high, very weakly inflated, both valves slightly convex; umbonal angle c. 140°; exterior surface of disc and auricles smooth, interior with c. 42–54 narrow, prominent radial riblets arranged irregularly or in vaguely discernable pairs; auricles equal in length, intermediate hinge teeth absent, byssal notch and ctenolium weak in early ontogeny, absent later.

Distribution. Middle Miocene–Recent. The earliest species referable to Ylistrum seems to be Amusium morganense Beu & Darragh (2001: 175, figs 64A, F, 65A–E), from Morgan Limestone (Balcombian Australian local stage, middle Miocene), River Murray cliffs near Blanchetown, South Australia, and Nullarbor Limestone (also Balcombian), Nullarbor Plain, southern Western Australia. Ylistrum morganense is smaller and has larger auricles and much more closely paired internal rib carinae than Y. balloti . Tropical and subtropical Indo-West Pacific, living littorally.

Discussion.As discussed under Annachlamys and Amusium , we retain Ylistrum in Amusiini at present, awaiting a more final molecular phylogeny of Pectinidae .

Kingdom

Animalia

Phylum

Mollusca

Class

Bivalvia

Order

Pectinida

Family

Pectinidae

Loc

Ylistrum Mynhardt & Alejandrino, 2014

Dijkstra, Henk H. & Beu, Alan G. 2018
2018
Loc

Ylistrum

Mynhardt, G & Alejandrino, L & Puslednik, J 2014: 407
2014
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