The genus Glyptospira (Gastropoda: Trochacea) from the Permian of the southwestern United States

1988 ◽  
Vol 62 (6) ◽  
pp. 868-879 ◽  
Author(s):  
Douglas H. Erwin
Keyword(s):  
United States ◽  
Evolutionary History ◽  
Lower Permian ◽  
Southwestern United States ◽  
West Texas ◽  
Quantitative Characters ◽  
History Of ◽  
Qualitative Characters ◽  
Canyon Range ◽  
Transformation Series

Glyptospira is a small, highly ornamented, turriteliform gastropod found in the Lower Permian of the southwestern United States. Two species, Glyptospira cristulata Chronic and G. arelela Plas, have been previously described from the Kaibab Formation, Arizona, and the Bird Spring Group, Arrow Canyon Range, Nevada, respectively. The genus is most diverse in the Wolfcampian Hueco Formation of West Texas and southern New Mexico and the Colina Limestone of southeastern Arizona. This contribution describes four new species of Glyptospira from the southwestern United States: two bicarinate forms, G. huecoensis and G. turrita, and two tricarinate forms, G. tricostata and G. cingulata.A phylogenetic analysis of all known species of Glyptospira was performed using qualitative characters for which transformation series could be established and two quantitative characters for which transformation series could not be established. The phylogenetic results provided the best available hypothesis of the evolutionary history of the genus.

Permian Gastropoda of the southwestern United States: Subulitacea

1988 ◽  
Vol 62 (01) ◽  
pp. 56-69 ◽  
Author(s):  
Douglas H. Erwin
Keyword(s):  
United States ◽  
New Species ◽  
New Mexico ◽  
New Genus ◽  
Southwestern United States ◽  
New Family ◽  
West Texas ◽  
Permian System ◽  
The Family ◽  
The Status

The composition of Permian members of the superfamily Subulitacea is considered, and 12 new species of Subulitacea are described from the silicified fauna of the Permian System of West Texas and New Mexico. Other elements of the gastropod fauna were previously described by Yochelson (1956a, 1960) and Batten (1958).The new genusIschnoptygmais established for subulitaceans possessing a plate-like columellar fold, and includes the new speciesIschnoptygma archibaldiandI. valentinei.The genus is placed within the new family Ischnoptygmidae. New species of Subulitidae areCeraunocochlis deformis, C. elongata, C. kidderi, C. trekensis, Strobeus girtyi, Soleniscus diminutus, S. variabilis, Cylindritopsis hamiltonae, andC. spheroides.The status of the genusLabridensis questioned, but provisionally retained. The assignment of the family Meekospiridae to the Subulitacea is questioned, and a single new species,Meekospira mimiae, is described.

scholarly journals Climate history of the southwestern United States based on Estancia Basin hydrologic variability from 69 to 10 ka

2018 ◽  
Vol 200 ◽  
pp. 237-252 ◽  
Author(s):  
Kirsten M. Menking ◽  
Victor J. Polyak ◽  
Roger Y. Anderson ◽  
Yemane Asmerom
Keyword(s):  
United States ◽  
Southwestern United States ◽  
Climate History ◽  
Hydrologic Variability ◽  
History Of

Controversies on the evolutionary history of pycnodont fishes – reply to Kriwet 2004

2004 ◽  
Vol 95 (3-4) ◽  
pp. 543-546 ◽  
Author(s):  
Francisco José Poyato-Ariza
Keyword(s):  
Recent Work ◽  
Evolutionary History ◽  
Phylogenetic Reconstruction ◽  
History Of ◽  
Transformation Series

Criticisms by Kriwet regarding recent work on pycnodont phylogeny are based on the use of additive characters. Therefore, applying transformation series in phylogenetic reconstruction is justified in theory and in practice, and an example of additional ontogenetic evidence supporting character ordering in pycnodonts is provided. Moreover, comments on some pycnodont genera are included, and the accurate taxonomic use of the genera Coelodus and Ocloedus is emphasised.

The Sponge Family Guadalupiidae in the Texas Permian

2010 ◽  
Vol 84 (5) ◽  
pp. 821-847 ◽  
Author(s):  
Robert M. Finks
Keyword(s):  
Evolutionary History ◽  
Growth Patterns ◽  
New Genera ◽  
The West ◽  
Entire Family ◽  
Ecological Relationships ◽  
West Texas ◽  
The Family ◽  
History Of ◽  
Almost All

New and old species and genera of the family Guadalupiidae (spherulitic hypercalcified demosponges of the order Agelasida) are described or redescribed from the West Texas Permian. The entire family is reviewed and observations are made on the epibionts, growth patterns, functional morphology, ecological relationships, morphologic variability, modular structure, and evolutionary history of these largely reef-dwelling sponges. The stratigraphic distribution of species is also noted; many are limited and can define zones. The new genera Exovasa and Incisimura and the new species Guadalupia auricula, G. cupulosa, G. ramescens, G. microcamera, G. vasa, Cystothalamia megacysta, Lemonea simplex, Incisimura bella, and Exovasa cystauletoides are described. Almost all previously published taxa are redescribed and in some cases redefined. The Guadalupiidae are unique among hypercalcified sponges in having a modular thalamid layer (thalamidarium) covered on the exhalant surface by a non-modular stromatoporoid-like layer (trabecularium).

scholarly journals Allozyme variation and recent evolutionary history of eastern hemlock (Tsuga canadensis) in the southeastern United States

New Forests ◽  
2007 ◽  
Vol 35 (2) ◽  
pp. 131-145 ◽  
Author(s):  
K. M. Potter ◽  
W. S. Dvorak ◽  
B. S. Crane ◽  
V. D. Hipkins ◽  
R. M. Jetton ◽  
...  
Keyword(s):  
United States ◽  
Evolutionary History ◽  
Southeastern United States ◽  
Allozyme Variation ◽  
Tsuga Canadensis ◽  
Eastern Hemlock ◽  
History Of

scholarly journals Primary cutaneous coccidioidomycosis in an immunocompetent oil field worker in West Texas

2019 ◽  
Vol 6 (3) ◽  
pp. 21
Author(s):  
Eric Christensen ◽  
Mark Feldman
Keyword(s):  
United States ◽  
South America ◽  
Pulmonary Infection ◽  
Oil Field ◽  
Southwest United States ◽  
Field Worker ◽  
West Texas ◽  
Direct Inoculation ◽  
History Of

Coccidioidomycosis is a disease endemic to the southwest United States, as well as Central and South America, and primarily causes pulmonary infection. The cutaneous findings associated with Coccidioides species often present as an exanthema or as dissemination from a primary pulmonary infection. Rarely do individuals present with primary cutaneous coccidioidomycosis due to direct inoculation of the skin by arthroconidia. We report a case in which an immunocompetent oil field worker presented with a severe, fungating nasal lesion, who with culture, serology, histopathology, and a convincing history of exposure revealed a diagnosis of primary cutaneous coccidioidomycosis.

A new species of the ptilodontid multituberculate Prochetodon (Mammalia, Allotheria) from the Paleocene Paskapoo Formation of Alberta, Canada

2004 ◽  
Vol 41 (2) ◽  
pp. 237-246 ◽  
Author(s):  
Craig S Scott
Keyword(s):  
United States ◽  
New Species ◽  
North America ◽  
Evolutionary History ◽  
The United States ◽  
Primitive Form ◽  
Late Paleocene ◽  
History Of ◽  
A New Species

A new species of the ptilodontid multituberculate genus Prochetodon (Mammalia, Allotheria) from the Paleocene Paskapoo Formation of Alberta, Canada, is described. Prochetodon speirsae sp. nov. is the oldest discovered species of the genus, extending the temporal range of Prochetodon earlier into the Paleocene. It exhibits a mosaic of primitive and derived dental features suggestive of a position phylogenetically intermediate between Ptilodus and Prochetodon. Newly discovered specimens from the late Paleocene Gao Mine locality are referred tentatively to Prochetodon foxi. The occurrence of a primitive form of Prochetodon in sediments of early Tiffanian age suggests the evolutionary history of the genus is more complex than previously appreciated. Prochetodon joins a number of well-documented, progressive mammalian taxa making their first appearance in the Western Interior of North America at higher latitudes, well before their first known occurrence in the United States, suggesting a possible origin and immigration from currently unsampled habitats.

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