Modiomytilus, a new mytilid bivalve from the Tertiary of southern Patagonia

1 March 1990

journal article
research article
Published by Cambridge University Press (CUP) in Journal of Paleontology

Vol. 64 (3) , 377-382
https://doi.org/10.1017/s002233600001859x

Abstract

Modiomytilus n. gen. is described from Tertiary sediments exposed in the southwestern corner of Santa Cruz province (Argentina). This large mytilid is characterized by its ornamentation of strong comarginal undulations, its smooth ligamentary ridge, and its relatively large anterior adductor muscle. Two new species are assigned to it: Modiomytilus argentinensis n. sp., from the Centinela Formation (Miocene) south of Lago Argentino, and Modiomytilus mercerati n. sp., from the Río Turbio Formation (Eocene) in Sierra Dorotea. Although other species belonging to this new taxon and previously referred to Mytilus have been described from Tertiary sediments in the region, none are known so far from rocks of comparable age outside Patagonia.

This publication has 8 references indexed in Scilit:

Relation of Shell Form to Life Habits of the Bivalvia (Mollusca)
Published by Geological Society of America ,1970
The Venericardia planicosta group in the Gulf province
Published by US Geological Survey ,1939
New and characteristic species of fossil mollusks from the oil-bearing Tertiary formations of southern California
Proceedings of the United States National Museum, 1907
Énumération synoptique des espèces de mammifères fossiles des formations éocènes de Patagonie,
Published by Smithsonian Institution ,1894
A Monograph of the Eocene Mollusca, or, Descriptions of Shells from the Older Tertiaries of England. Part I. Bivalves
Monographs of the Palaeontographical Society, 1861
Analyse de la nature : or, Tableau de l'univers et des corps organisés /
Published by Smithsonian Institution ,1815
Neues systematisches Conchylien-Cabinet /
Published by Smithsonian Institution ,1785
Saggio sulla storia naturale del Chili /
Published by Smithsonian Institution ,1782