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Harklessia yuenglingensis

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Journal Article

A NEW GENUS OF EARLY CAMBRIAN CORAL IN ESMERALDA COUNTY, SOUTHWESTERN NEVADA Available to Purchase

MELISSA HICKS
Published: 01 July 2006
Journal of Paleontology (2006) 80 (4): 609–615.
DOI: https://doi.org/10.1666/0022-3360(2006)80[609:ANGOEC]2.0.CO;2
...MELISSA HICKS 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...
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Image
Figure4—Photographs of Harklessia yuenglingensis n. gen. and sp. 1, 2, UCMP 50029. 3, Polished longitudinal cut, Holotype UCMP 50027

Figure 4 —Photographs of Harklessia yuenglingensis n. gen. and sp. 1, 2... Available to Purchase

Published: 01 July 2006
Figure 4 —Photographs of Harklessia yuenglingensis n. gen. and sp. 1, 2, UCMP 50029. 3, Polished longitudinal cut, Holotype UCMP 50027
Image
Figure5—Photomicrographs of thin sections of Harklessia yuenglingensis n. gen and sp. 1, Transverse section through corallum (UCMP 50030) illustrating the close-packed, polygonal corallites (note that all corallites share walls; detrital quartz and micrite are typical deposits in the corallites); 2, longitudinal section illustrating intercorallite budding (holotype UCMP 50027); 3, longitudinal section with new corallite wall forming during lateral increase (holotype UCMP 50027); 4, transverse section through same coral (holotype UCMP 50027) showing the new corallite wall growth; 5, 6, longitudinal ultra thin sections (UCMP 50030) at 10× magnification in plain light (5) and 40× magnification with cross polars (6) (coral skeleton composed of varying sized, randomly distributed, and irregularly shaped, microgranular calcite)

Figure 5 —Photomicrographs of thin sections of Harklessia yuenglingensis ... Available to Purchase

Published: 01 July 2006
Figure 5 —Photomicrographs of thin sections of Harklessia yuenglingensis n. gen and sp. 1, Transverse section through corallum (UCMP 50030) illustrating the close-packed, polygonal corallites (note that all corallites share walls; detrital quartz and micrite are typical deposits
Journal Article

INCREASE IN CARBONATE CONTRIBUTION FROM FRAMEWORK-BUILDING METAZOANS THROUGH EARLY CAMBRIAN REEFS OF THE WESTERN BASIN AND RANGE, USA Available to Purchase

DAVID R. CORDIE, STEPHEN Q. DORNBOS, PEDRO J. MARENCO
Journal: PALAIOS
Published: 20 March 2019
PALAIOS (2019) 34 (3): 159–174.
DOI: https://doi.org/10.2110/palo.2018.085
..., archaeocyath gen. 4). The coralomorph Harklessia yuenglingensis was observed only in the Harkless Formation. Reef-dwelling organisms such as lingulids and echinoderms, most likely eocrinoids, helicoplacoids, and/or edrioasteroids, were sparsely spread though all intervals and minor compared to archaeocyaths...
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Book Chapter

Ediacaran and early Cambrian reefs of Esmeralda County, Nevada: Non-congruent communities within congruent ecosystems across the Neoproterozoic–Paleozoic boundary Available to Purchase

Author(s)
Stephen M. Rowland, Lynn K. Oliver, Melissa Hicks
Book: Field Guide to Plutons, Volcanoes, Faults, Reefs, Dinosaurs, and Possible Glaciation in Selected Areas of Arizona, California, and Nevada
Series: GSA Field Guide
Publisher: Geological Society of America
Published: 01 January 2008
DOI: 10.1130/2008.fld011(04)
EISBN: 9780813756110
... yuenglingensis , which has similarities with tabulate corals ( Hicks, 2006b ). Unfortunately, the reefs with Harklessia are not easily accessible, so these early Cambrian corals will not be observed on this field trip. Road Log Day 1: Ediacaran Microbial Reefs of The Middle Member Deep Spring Formation...
Abstract
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Abstract Esmeralda County, Nevada, is extraordinary for the presence of Ediacaran and early Cambrian reefs at several stratigraphic positions. In this road log and field guide we present descriptions and interpretations of the most instructive exposures of three of these reef-rich intervals: (1) the Mount Dunfee section of the Middle Member of the Deep Spring Formation (Ediacaran in age), (2) the Stewart's Mill exposure of the Lower Member of the Poleta Formation (mid-early Cambrian), and (3) an exposure on the north flank of Slate Ridge of reefs near the top of the Harkless Formation (latest early Cambrian). We introduce the term “congruent ecosystems” for ecosystems of different age that occupied similar environments. The Ediacaran reefs of the Deep Spring Formation and the early Cambrian reefs of the Lower Member of the Poleta Formation occupied similar environments but exhibit distinctively different ecological structure. Thus we propose these two reef complexes as our premier example of non-congruent communities within congruent ecosystems.