Author:
Brock Glenn A.,Cooper Barry J.
Abstract
Small shelly fossils from the Wirrealpa and Aroona Creek Limestones, Flinders Ranges, and the temporally equivalent Ramsay Limestone, Yorke Peninsula, South Australia, are described and assessed. These formations, deposited during a widespread marine transgression, have traditionally been assigned an early Middle Cambrian age based on lateral facies relationships, lithostratigraphic interpretation, and age diagnostic trilobites. However, new data from regional sequence stratigraphy and mounting paleontological evidence suggest that a late Early Cambrian age (equivalent to the Toyonian Stage from the Siberian Platform) is more appropriate for these units. Twenty-four taxa, including a number of problematica, poriferans, coeloscleritophorans, palaeoscolecidans, “conodontomorphs,” hyolithelminthes, hyoliths, mollusks, and inarticulate brachiopods, are reported herein; many of these have not previously been reported from the Cambrian of South Australia. The enigmatic Chalasiocranos exquisitum n. gen. and sp., known from disarticulated tuberculate cone-shaped phosphatic sclerites, and Protomelission gatehousei n. gen. and sp., a problematic, perhaps colonial organism, known from phosphatic plates, are especially notable. The genus Kaimenella is formally included in the Palaeoscolecida, and two species (including K. dailyi n. sp.) are recognized.
Publisher
Cambridge University Press (CUP)
Reference157 articles.
1. Cuvier G. L. C. F. D. 1797. Tableau elementáire de l'histoire naturelle des animaúx. Paris, 710 p.
2. Middle Cambrian priapulids and other soft-bodied fossils from Utah and Spain;Conway Morris;University of Kansas Paleontological Contributions, Paper,1986
3. Iskopaemye nizhnego kembriya Gor Makkenzi (Kanada);Voronova;Trudy Paleontologicheskogo Instituta AN SSSR,1987
4. Cambrian microfossil Hadimopanella Gedik from glacial erratics in West Antarctica;Wrona;Palaeontologia Polonica,1987
5. Cambrian Brachiopoda;Walcott;U.S. Geological Survey, Monographs,1912
Cited by
80 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献