Lower Cambrian


Also found in: Dictionary, Thesaurus.
Related to Lower Cambrian: Upper Cambrian

Lower Cambrian

[′lō·ər ′kam·brē·ən]
(geology)
The earliest epoch of the Cambrian period of geologic time, ending about 540,000,000 years ago.
References in periodicals archive ?
Detalizatsiya stratigraficheskoj skhemy nizhnego kembriya zapada Vostochno-Evropejskoj platformy [Detailing of the Lower Cambrian Stratigraphical Scheme for the Western East European Platform].
Peel, "Articulated Halkieriids from the Lower Cambrian of North Greenland and Their Role in Early Protostome Evolution," Philosophical Transactions of the Royal Society London B 347 (1995): 305-58.
1997, Arthropods of the Lower Cambrian Chengjiang fauna, southwest China: Fossils and Strata, v.
Composition and preservation of the Chengjiang fauna-a Lower Cambrian soft-bodied biota.
The Ross Orogen as described by Stump (1995) is characterized by a passive margin as the result of Rodinia break-up during the Neoproterozoic, which includes the lower Cambrian Shackleton Limestone.
Furthermore, traces of various kinds of burrows and trackways appear in lower Cambrian sediments of Stage 1 and 2, again prior to the appearance of trilobites.
In the Kunda klint bay the Kunda buried valley cuts through Middle and Lower Ordovician hard carbonate rocks into Lower Ordovician and Lower Cambrian terrigeneous rocks.
Lingulate brachiopods represent a class of marine invertebrates (Lingulata Gorjansky & Popov) existing from the Lower Cambrian to the present (Holmer & Popov 2000).
The Chengjiang fauna occurs in the Yu'anshan Member of the Lower Cambrian Qiongzhusi Formation in Yunnan Province, but it was first discovered in Chengjiang County, about 50 km from Kunming, the capital of Yunnan Province (southeast China).