Rodzaj Deslongchampsia Morris & Lycett, 1851
Gatunek typowy Opis Shell of small-medium size, cap-shaped, rather depressed, suborbicular, with apex anterior to median and pointing anteriorly; broad, smooth sulcus runs from apex to rounded lobelike projection of anterior margin; remainder of surface radially costate. Synonimy Zasięg czasowy Mid (Bathonian) to Late Jurassic (Oxfordian). Literatura Morris, J. & Lycett, J. 1851. A monograph of the Mollusca from the Great Oolite, chiefly from Minchinhampton and the coast of Yorkshire. 13 pp. Palaeontographical Society, London. |
|