Abstract: Sequence Evolution and Sequence Extinction; species level recognition of individual sequences and parasequence sets, Lower Permian, West Texas

The discovery of a new locality yielding giant Guadalupian (Lower Permian) fusulinids in east-central Alaska extends the range of these forms much farther north than previously known, and into a tectonostratigraphic terrane from which they previously had not been reported. The number of areas from which giant parafusulinids are known in North America is thus raised to eight. Three of these localities are in rocks that previously had been referred to the allochthonous McCloud belt arc, and one, West Texas, is known to have been part of Paleozoic North America. Comparison of species from all areas suggests that there are two closely related species groups: one represented in Texas and Coahuila, and the other represented in Sonora, northern California, northeastern Washington, southern and northern British Columbia, Alaska, and apparently in Texas. These groups may differ because they are of slightly different ages or because interchange between the faunas of Texas–Coahuila area and the other regions was somewhat inhibited during the Early Permian.

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Outcrop-based characterization of the Leonardian carbonate platform in west Texas: Implications for sequence-stratigraphic styles in the Lower Permian

AAPG Bulletin ◽

10.1306/05311212013 ◽

2013 ◽

Vol 97 (2) ◽

pp. 223-250 ◽

Cited By ~ 5

Author(s):

Stephen C. Ruppel ◽

W. Bruce Ward

Keyword(s):

Carbonate Platform ◽

Lower Permian ◽

Sequence Stratigraphic ◽

West Texas

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Application of graphic correlation to compare Lower Permian sections of the Glass Mountains, West Texas and the Western Slope of the Ural Mountains, Russia

Episodes ◽

10.18814/epiiugs/2000/v23i4/002 ◽

2000 ◽

Vol 23 (4) ◽

pp. 247-256 ◽

Cited By ~ 1

Author(s):

Stephen L. Benoist

Keyword(s):

Western Slope ◽

Lower Permian ◽

Ural Mountains ◽

West Texas

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Abstract: Lower Permian (Wolfcampian) Carbonate Shelf-margin Buildups in the Hueco Mts., West Texas: Analogs for Permian Basin Reservoirs

AAPG Bulletin ◽

10.1306/c9ebca45-1735-11d7-8645000102c1865d ◽

1999 ◽

Vol 83 (1999) ◽

Author(s):

WAHLMAN, G.P., D.R. TASKER, M.L. ST

Keyword(s):

Lower Permian ◽

Permian Basin ◽

West Texas ◽

Shelf Margin

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Permian basinal ammonoid sequence in Nanpanjiang area of South China—possible overlap between basinal Guadalupian and platform-based Lopingian

Journal of Paleontology ◽

10.1017/jpa.2016.128 ◽

2017 ◽

Vol 91 (S74) ◽

pp. 1-95 ◽

Cited By ~ 6

Author(s):

Zuren Zhou

Keyword(s):

New Species ◽

North America ◽

South China ◽

South Urals ◽

Lower Permian ◽

New Genera ◽

West Texas ◽

Permian Ammonoid

AbstractThe Permian pandemic ammonoids in Nanpanjiang Basin (41 genera, including two new generaGlenisterocerasandFusicrimites, and 56 species, including 21 new species) are systematically described and/or discussed. New species described in this paper areAgathiceras sequaxiliraen. sp.,Akmilleria parahuecoensisn. sp.,Aristoceras liuzhaiensen. sp.,Bamyaniceras nandanensen. sp.,Bamyaniceras yangchangensen. sp.,Bransonoceras longyinensen. sp.,Difuntites furnishin. sp.,Emilites globosusn. sp.,Eoaraxoceras spinosain. sp.,Eumedlicottia kabiensisn. sp.,Fusicrimites nanpanjiangensisn. gen. n. sp.,Glenisteroceras sidazhaiensen. gen. n. sp.,Metaperrinites shaiwaensisn. sp.,Miklukhoceras guizhouensen. sp.,Neocrimites guizhouensisn. sp.,Neopronorites leonovaen. sp.,Popanoceras ziyunensen. sp.,Properrinites gigantusn. sp.,Stacheoceras shaiwaensen. sp.,Svetlanoceras uraloceraformisn. sp., andSynartinskia meyaoensen. sp. A relatively complete Permian basinal ammonoid sequence with six zones has been newly recognized in South China, in ascending order,Properrinites gigantus-Svetlanoceras serpentinum,Svetlanoceras uraloceraformis-Prothalassoceras biforme,Popanoceras kueichowense-Medlicottia orbignyanus,Metaperrinites shaiwaensis-Popanoceras ziyunense,Waagenocerassp.-Propinacoceras beyrichi, andEoaraxoceras spinosai-Difuntites furnishi. The upper three zones are close to being duplicated from the Permian of Las Delicias, Coahuila, Mexico and west Texas, USA; while the lower three zones compare well to those of the Lower Permian in South Urals. TheEoaraxoceras-Difuntitesassemblage, as an index fauna of the upper Capitanian in Coahuila, has been found from the Claystone (3rd) Member of the Shaiwa Formation with the commonly accepted Lopingian stratigraphic age. The updated Permian ammonoid biostratigraphy in South China reveals a possible overlap between the basinal Guadalupian from North America and the platform-based Lopingian from South China.

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Morphological identification and COI barcodes of adult flies help determine species identities of chironomid larvae (Diptera, Chironomidae)

Bulletin of Entomological Research ◽

10.1017/s0007485315000486 ◽

2015 ◽

Vol 106 (1) ◽

pp. 34-46 ◽

Cited By ~ 7

Author(s):

A.J. Failla ◽

A.A. Vasquez ◽

P. Hudson ◽

M. Fujimoto ◽

J.L. Ram

Keyword(s):

Sequence Data ◽

Species Group ◽

Species Level ◽

Morphological Identification ◽

Neighbor Joining ◽

Chironomid Larvae ◽

Western Lake ◽

Individual Sequences ◽

Aquatic Food ◽

Coi Sequences

AbstractEstablishing reliable methods for the identification of benthic chironomid communities is important due to their significant contribution to biomass, ecology and the aquatic food web. Immature larval specimens are more difficult to identify to species level by traditional morphological methods than their fully developed adult counterparts, and few keys are available to identify the larval species. In order to develop molecular criteria to identify species of chironomid larvae, larval and adult chironomids from Western Lake Erie were subjected to both molecular and morphological taxonomic analysis. Mitochondrial cytochrome c oxidase I (COI) barcode sequences of 33 adults that were identified to species level by morphological methods were grouped with COI sequences of 189 larvae in a neighbor-joining taxon-ID tree. Most of these larvae could be identified only to genus level by morphological taxonomy (only 22 of the 189 sequenced larvae could be identified to species level). The taxon-ID tree of larval sequences had 45 operational taxonomic units (OTUs, defined as clusters with >97% identity or individual sequences differing from nearest neighbors by >3%; supported by analysis of all larval pairwise differences), of which seven could be identified to species or ‘species group’ level by larval morphology. Reference sequences from the GenBank and BOLD databases assigned six larval OTUs with presumptive species level identifications and confirmed one previously assigned species level identification. Sequences from morphologically identified adults in the present study grouped with and further classified the identity of 13 larval OTUs. The use of morphological identification and subsequent DNA barcoding of adult chironomids proved to be beneficial in revealing possible species level identifications of larval specimens. Sequence data from this study also contribute to currently inadequate public databases relevant to the Great Lakes region, while the neighbor-joining analysis reported here describes the application and confirmation of a useful tool that can accelerate identification and bioassesment of chironomid communities.

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