Abstract

Eight species of graptolites not recognized in a previous study (Lenz 1972) are described from the Gaspé region. These comprise Monograptus bouceki, of Late Pridolian age from the Roncel-les Formation; M. cf. M. galaensis and M. communis rostratus of mid-Llandoverian age from the Burnt Jam Brook and White Head Formations respectively; Pristiograptus auctus of latest Wenlockian or earliest Ludlovian age, and P. tumescens and Saetograptus chimaera semispinosus of early Ludlovian age, from the St. Léon Formation; P. dubius dubius of Wenlockian or early Ludlovian age from the Laforce and St. Léon Formations; and P. ludensis of latest Wenlockian age from the Gascons Formation.To date thirty species of graptolites have been recognized from the stratigraphic units studied.The low diversity of the Wenlockian-Ludlovian faunas is considered indicative of a shallow water community setting. It is tentatively suggested that the latest Wenlockian P. ludensis zones fauna might be the shallow water equivalent of the deep water M. testis zone.

You do not currently have access to this article.