Results 11 to 20 of about 5,124,862 (215)
The oldest brachiopods from the lower Cambrian of South Australia [PDF]
Acta Palaeontologica Polonica, 2011 The morphology and organophosphatic shell structure of the paterinate brachiopod Askepasma is documented using new and previously collected specimens from the lower Cambrian of South Australia. Lack of adequately preserved material has seen the majority of paterinate specimens previously reported from South Australia referred to the genus Askepasma and
TIMOTHY TOPPER +7 more
core +10 more sources
A Phosphatocopid Crustacean with Appendages from the Lower Cambrian
Science, 2001 Here we describe a phosphatocopid arthropod with preserved soft anatomy from Lower Cambrian rocks of Shropshire, England, which provides evidence for the occurrence of Crustacea, including Eucrustacea, in the Early Cambrian. The find identifies an important, stratigraphically early source of well-preserved fossils (Konservat-Lagerstätte).
Siveter, David J. +2 more
openaire +5 more sources
Testing for the presence of a terrane boundary within Neoproterozoic (Dalradian) to Cambrian siliceous turbidites at Callander, Perthshire, Scotland [PDF]
, 1999 The Southern Highland Group (Dalradian) and Keltie Water Grit Formation, which includes the Lower Cambrian Leny Limestone, form an inverted, 1.4 km thick, largely arenaceous, sequence at Callander.
Pringle, M.S., Tanner, P.W.G.
core +8 more sources
The palynology and stratigraphy of the Cambrian Nolichucky Shale and associated formations at Thorn Hill, Tennessee, USA [PDF]
, 2012 A detailed palynological and stratigraphic study was undertaken on the Cambrian Nolichucky Shale, Maynardville Limestone and Copper Ridge Dolomite (Conasauga Group), as exposed at Thorn Hill, northeastern Tennessee, USA.
Pedder, Brian E
core +6 more sources
A Eucrustacean Metanauplius from the Lower Cambrian [PDF]
Current Biology, 2010 A new eucrustacean arthropod, Wujicaris muelleri gen. et sp. nov, is represented by a Lower Cambrian early metanauplius of strikingly modern morphology despite being the oldest known fossil of such an early immature crustacean larva. The morphology of the metanauplius closely mirrors that of corresponding developmental stages of living barnacles and ...
Zhang, XG +4 more
openaire +3 more sources
Frontiers in Earth Science, 2023 This study reports a comprehensive geochemical analysis of several samples of the solid bitumen recently discovered in the Cambrian reservoirs in drillings and outcrops in the Ordos Basin. The results show that the solid bitumen in the reservoir features
Junping Huang +5 more
doaj +1 more source
Geochemistry of marine black shale of the Cambrian Qiongzhusi Formation, Yangtze Plate, SW China: implications for provenance and paleoweathering [PDF]
Oil Shale, 2023 Marine black shale in the Lower Cambrian Qiongzhusi (QZS) Formation in the southwestern Yangtze Plate, SW China, is the key target for shale gas development. The paleoenvironment plays an important role in the formation of organic-rich shale.
Zexin Fang, Ling Guo, Jianni Liu
doaj +1 more source
Deep water vetulicolians from the lower Cambrian of China. [PDF]
PeerJVetulicolians are an enigmatic phylum of extinct Cambrian marine invertebrates. They are particularly diverse in the Chengjiang Biota of China, but representatives have been recovered from other Fossil-Lagerstätten (Cambrian Stage 3-Drumian).
Ma S +5 more
europepmc +4 more sources
Petroleum Exploration and Development, 2017 Based on the carbon isotopic compositions of Cambrian-Ordovician source rocks Kerogen Samples and Paleozoic crude oil in the platform region of Tarim Basin, the origin and source of Paleozoic crude oil were investigated.
Xinjian ZHU +6 more
doaj +1 more source
Energies, 2020 Strong tectonic movement brings great risk to exploration of shale gas in southern China, especially in Lower Cambrian shale with complex tectonic backgrounds, which has good hydrocarbon-generation matter but low or no gas content.
Xin Wang +10 more
doaj +1 more source