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A NEW GENUS OF EARLY CAMBRIAN CORAL IN ESMERALDA COUNTY, SOUTHWESTERN NEVADA
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ABSTRACT-
Numerous Early Cambrian corals or "coralomorphs," as they are often classified, are recorded from North America, Australia, and Siberia. A new Early Cambrian coral, Harklessia yuenglingensis n. gen. and sp., is found in conjunction with archaeocyathan-microbial reefs in Esmeralda County, southwestern Nevada. The coral-bearing reefs are within quartzic, trilobite-rich packstone beds in the upper portion of the Harkless Formation (Bonnia-Olenellus Zone). Coralla are constructed by subpolygonal to polygonal, cerioid, close-packed corallite tubes. Coralla average 12 cm in height by 18 ...
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Cladistic analysis of the Early Cambrian olenelloid trilobites
; ...evolutionary relationships within the Early Cambrian superfamily Olenelloidea Walcott, 1890...trilobite morphology was so plastic in the Early Cambrian that suprageneric classification of Early Cambrian trilobites is precluded. Although levels...
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HEXACTINELLID SPONGES FROM THE EARLY CAMBRIAN BLACK SHALE OF SOUTH ANHUI, CHINA
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Tragedy found in Cambrian carnival. (evidence of mass extinction of animals) (Brief Article)
; Paleontologists have come to view the early Cambrian period as an evoluntionary field day...more than 850 genera living in the early Cambrian period, roughly 530 million years ago...In terms of extinction rates, the early Cambrian die-offs rank as even more severe than...
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AN EARLY CAMBRIAN RADULA
; ...Microscopic teeth isolated from the early Cambrian Mahto Formation, Alberta, Canada, are...the relatively unescalated nature of early Cambrian ecosystems (Butterfield, 2001)-but...contributed directly to the success of Early Cambrian molluscs, including monoplacophorangrade...
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Crusty crustacean
; ...back 540-520 million years, to the Early Cambrian. Paleontologist Jun-Yuan Chen, of China...than the four pairs seen in most other Early Cambrian arthropods-probably peg the creature...Crustaceans: New Evidence From the Early Cambrian of China," Proceedings of the Royal...
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NEW CHANCELLORIIDS FROM THE EARLY CAMBRIAN SEKWI FORMATION WITH A COMMENT ON CHANCELLORIID AFFINITIES
; ...Walcott, 1920 are described from the Early Cambrian (Branchian) Sekwi Formation, Mackenzie...1997). Recent collecting from the Early Cambrian (Branchian) Sekwi Formation of the...part of a broader investigation of the Early Cambrian biosphere, has produced new and well-preserv...
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SMALL SHELLY FAUNA FROM THE UPPER LOWER CAMBRIAN BASTION AND ELLA ISLAND FORMATIONS, NORTH-EAST GREENLAND
; ...State, but also with other important Early Cambrian continents, in particular with Australia...gen. and sp. INTRODUCTION ROCKS OF Early Cambrian age in eastern Luurcntiu are mainly...fold belt of North-East Greenland. Early Cambrian faunas from the eastern United States...
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EARLY CAMBRIAN TRILOBITES FROM ANGORICHINA, FLINDERS RANGES, SOUTH AUSTRALIA, WITH A NEW ASSEMBLAGE FROM THE PARARAIA BUNYEROOENSIS ZONE
; ...the Wirrealpa Limestone. Australian Early Cambrian trilobite biozonation is reviewed...Templetonian Stage within the late Early Cambrian. A possible paedomorphic lineage between...species evolved via neoteny. INTRODUCTION EARLY CAMBRIAN trilobites were first described from...
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A new early Cambrian bradoriid (arthropoda) from East Antarctica
; ...between Australia and Antarctica in the Early Cambrian, the possible sister group relationship...and biogeographic changes during the Early Cambrian. LOCALITY, DEPOSITIONAL ENVIRONMENT...accumulated on or immediately seaward of an Early Cambrian shelf (Rowell et al., 1992a). Its ...
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Early Cambrian trilobite larvae and ontogeny of Ichangia ichangensis Chang, 1957 (Protolenidae) from Henan, China
; ...for evaluating relationships among Early Cambrian trilobites. INTRODUCTION ONE OF the...studies is the abrupt appearance in the Early Cambrian of two partially overlapping trilobite...then, study of the ontogenies of these Early Cambrian species will provide critical data...
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