Original taxon: Ostrea vitrea.
800m deep, on mud, off southern Sardinia. 11mm.
The tanslucent ears let appear the ctelonium.
200m deep, in mud, off Málaga, Andalucia, S. Spain. 13mm.
A specimen from north Europa.
Trawled at 400m deep, Tromsøfjord, Troms, N.Norway. 16mm.
« July 9th. — The wind is still too weak to allow a productive work. Dredgings by 717 and 358 fathoms; a certain quantity of molluscs are fished, which have the peculiar trait of being common to the recent fauna of Norwegian Sea and to the pliocene fauna of Sicily and Mediterranean. These dredgings bring Terebratella Spitzbergensis, an arctic and japanese form; Pecten vitreus and Pecten aratus […] On july 11th, the dredgings resumed, again on the slope of the Channel’s shelf, with the same characteristics in the fauna.
Mr. Gwyn Jeffreys wished to perform some dredgings in the very great depths at the entrance to the Bay of Biscay, which we had fruitfully explored in 1809. Consequently, he headed southward, through a considerable distance without using the dredge, in fear of crossing the cable that goes from Brest to the Northern America. » – Thomson, Carpenter & Jeffreys: Les abîmes de la mer, Paris 1875 [H. M. S. ‘Porcupine’ expedition].
Mr. Gwyn Jeffreys wished to perform some dredgings in the very great depths at the entrance to the Bay of Biscay, which we had fruitfully explored in 1809. Consequently, he headed southward, through a considerable distance without using the dredge, in fear of crossing the cable that goes from Brest to the Northern America. » – Thomson, Carpenter & Jeffreys: Les abîmes de la mer, Paris 1875 [H. M. S. ‘Porcupine’ expedition].
Terebratella Spitzbergensis (3) — Pecten aratus (5) — Pecten vitreus (6) in J. G. Jeffreys: British conchology vol. V, London 1869, via BHL.
Original pictures provided by A. Nappo (IT).
– (CC BY-NC-SA) –
Original pictures provided by R. Stanić (HR).
– (CC BY-NC-SA) –