The genus Vesperispira (Gastropoda: Pleurotomarioidea) from the Permian of two displaced terranes, western United States

2000 ◽  
Vol 74 (4) ◽  
pp. 741-744
Author(s):  
Thomas E. Yancey ◽  
Ellen E. Strong ◽  
Rex A. Hanger
Keyword(s):  
United States ◽  
North America ◽  
Endemic Species ◽  
New Genus ◽  
Pine Forest ◽  
Western United States ◽  
Early Permian ◽  
New Genus And Species ◽  
Western Margin ◽  
Northwestern Nevada

Early permian strata in two displaced terranes of the McCloud belt contain a small biconic gastropod of distinctive appearance, Vesperispira humboldtiana new genus and species. This trochiform gastropod has a strongly oblique aperture with interrupted peristome, a small sinus on the peripheral margin of the shell, and lamellose shell. This gastropod is an easily recognized biogeographic indicator of the McCloud province biota, because of its lamellose ornamentation. Occurrence of this gastropod in strata of the Pine Forest Range of northwestern Nevada provides additional evidence for including rock units of the Black Rock terrane within the McCloud Belt, a grouping of several displaced terranes along the western margin of North America (Stevens et al., 1990) that contain fossil biotas rich in endemic species.

Systematics and paleoecology of Late Cambrian echinoderms from the western United States

1997 ◽  
Vol 71 (6) ◽  
pp. 1091-1109 ◽  
Author(s):  
Colin D. Sumrall ◽  
James Sprinkle ◽  
Thomas E. Guensburg
Keyword(s):  
United States ◽  
Great Basin ◽  
Rocky Mountains ◽  
New Genus ◽  
Western United States ◽  
New Genus And Species ◽  
Late Cambrian ◽  
Lower Ordovician ◽  
Single Piece ◽  
Low Diversity

Although echinoderm debris is locally common, articulated specimens are rare in Late Cambrian rocks from the Great Basin and Rocky Mountains of the western United States and are mostly associated with hardgrounds. The fauna, including cornute stylophorans, trachelocrinid eocrinoids, solute homoiosteleans, and rare edrioasteroids, includes several members of the archaic Cambrian Evolutionary Fauna, which had already passed its maximum diversity for echinoderms. In addition to the low diversity, articulated specimen abundance is very low, averaging only about one-tenth that found in overlying Lower Ordovician units. The transition between the Cambrian and Paleozoic Evolutionary Faunas for echinoderms in North America apparently occurred rapidly very close to the Cambrian-Ordovician boundary, because no unequivocal examples of the Paleozoic fauna (such as crinoids, glyptocystitid rhombiferans, asteroids, or echinoids) were found in the Late Cambrian sections.New taxa include several cothurnocystid stylophorans assigned to Acuticarpus delticus, new genus and species, Acuticarpus? republicensis, new species, and Archaeocothurnus goshutensis, new genus and species; Scotiaecystis? species, a poorly preserved cornute stylophoran with lamellipores; Minervaecystis? species, a fragmentary solute homoiostelean based on several steles; Tatonkacystis codyensis, new genus and species, a well-preserved trachelocrinid eocrinoid with five unbranched arms bearing numerous brachioles; an unnamed, poorly preserved, epispire-bearing eocrinoid; an unnamed, poorly preserved, globular eocrinoid? lacking epispires; and an unnamed, heavily weathered, edrioasterid edrioasteroid. Nearly all holdfasts found in these Upper Cambrian units are single-piece blastozoan types, probably belonging to trachelocrinid and other eocrinoids. Distinctive columnals and thecal plates of several additional undescribed eocrinoids and other echinoderms were locally abundant and are also described.

scholarly journals A new genus and three new species of noctuid moths from western United States of America and Mexico (Lepidoptera, Noctuidae, Noctuinae, Eriopygini)

ZooKeys ◽  
2018 ◽  
Vol 788 ◽  
pp. 183-199 ◽  
Author(s):  
Lars G. Crabo
Keyword(s):  
United States ◽  
New Species ◽  
North America ◽  
United States Of America ◽  
New Genus ◽  
The United States ◽  
Western United States ◽  
Distribution Maps ◽  
Three New Species ◽  
Lepidoptera Noctuidae

The genus Rhabdorthodesgen. n. is described for three previously unnamed noctuid moths from the mountains of south-western United States and Mexico. It is assigned to subfamily Noctuinae, tribe Eriopygini. Rhabdorthodespattersonisp. n. from the United States and Rhabdorthodesdurangosp. n. and Rhabdorthodespetersonisp. n. from Mexico are described. These moths are small, dull gray brown, and lack highly diagnostic wing markings, but are distinctive structurally. The adults and genitalia of both sexes are illustrated and distribution maps are presented. Two species eponyms honor persons who have facilitated the study and enjoyment of moths in North America by creating moth-specific websites.

scholarly journals Cladid crinoids from the Late Kinderhookian Meadville Shale, Cuyahoga Formation of Ohio

2012 ◽  
Vol 86 (3) ◽  
pp. 470-487 ◽  
Author(s):  
Thomas W. Kammer ◽  
Edgar W. Roeser
Keyword(s):  
New Species ◽  
North America ◽  
New Taxa ◽  
Endemic Species ◽  
New Genus ◽  
New Combinations ◽  
New Genus And Species ◽  
Rapid Radiation

A total of 17 species of cladid crinoids are documented from the late Kinderhookian Meadville Shale Member of the Cuyahoga Formation of northeastern Ohio, the most diverse assemblage of Kinderhookian-age cladids known in North America. One new genus, six new species, and seven new combinations are reported. New taxa include Cuyahogacrinus lodiensis new genus and species, and the new species Cyathocrinites simplex, Atelestocrinus meszarosi, Goniocrinus sceletus, Aphelecrinus gracilis, and Lebetocrinus ohioensis. New combinations include Logocrinus warreni (Laudon et al., 1952), Histocrinus aegina (Hall, 1863), Paracosmetocrinus richfieldensis (Worthen, 1882), P. corycia (Hall, 1863), Acylocrinus lyriope (Hall, 1863), Linocrinus merope (Hall, 1863), and L. paternus (Hall, 1863). Remaining taxa include Cyathocrinites lamellosus (White, 1863) and Ascetocrinus whitei (Hall, 1861), both of which also occur in the Osagean Burlington Limestone, and the endemic species Cosmetocrinus crineus (Hall, 1863) and Pachylocrinus subtortuosus (Hall, 1863).Collectively, the cosmopolitan genera and species of cladids show a greater overall affinity with Osagean cladid faunas than with other Kinderhookian cladid faunas. However, this is true for other Kinderhookian cladid faunas as well that individually have more taxa in common with Osagean faunas than other Kinderhookian faunas. This suggests a greater degree of endemism and local speciation during the Kinderhookian as a prelude to the rapid radiation of cladids, and other crinoids, during the Osagean.

Neritoptyx hogansoninew species (Gastropoda, Mollusca) from the Upper Cretaceous Fox Hills Formation on the Dakota Isthmus, western United States

2018 ◽  
Vol 93 (2) ◽  
pp. 278-290
Author(s):  
J. Mark Erickson
Keyword(s):  
Heat Transfer ◽  
United States ◽  
New Species ◽  
North America ◽  
Upper Cretaceous ◽  
Gulf Coast ◽  
Western United States ◽  
Western Interior Seaway ◽  
Decapod Crustaceans ◽  
Upper Maastrichtian

AbstractIn midcontinent North America, the Fox Hills Formation (Upper Cretaceous, upper Maastrichtian) preserves the last marine faunas in the central Western Interior Seaway (WIS).Neritoptyx hogansoninew species, a small littoral snail, exhibited allometric change from smooth to corded ornament and rounded to shouldered shape during growth. Specimens preserve a zig-zag pigment pattern that changes to an axial pattern during growth.Neritoptyx hogansoninew species was preyed on by decapod crustaceans, and spent shells were occupied by pagurid crabs. Dead mollusk shells, particularly those ofCrassostrea subtrigonalis(Evans and Shumard, 1857), provided a hard substrate to which they adhered on the Fox Hills tidal flats. This new neritimorph gastropod establishes a paleogeographic and chronostratigraphic proxy for intertidal conditions on the Dakota Isthmus during the late Maastrichtian. Presence of a neritid extends the marine tropical/temperate boundary in the WIS northward to ~44° late Maastrichtian paleolatitude. Late Maastrichtian closure of the isthmus subsequently altered marine heat transfer by interrupting northward flow of tropical currents from the Gulf Coast by as much as 1 to 1.5 million years before the Cretaceous ended.UUID:http://zoobank.org/3ba56c07-fcca-4925-a2f0-df663fc3a06b

The first Permian scorpionfly from Germany (Insecta, Panorpida: Protomeropidae)

2021 ◽  
Vol 4 (3) ◽  
Author(s):  
MARKUS J. POSCHMANN ◽  
ANDRÉ NEL
Keyword(s):  
Central Europe ◽  
Black Shale ◽  
New Genus ◽  
Climatic Changes ◽  
Late Carboniferous ◽  
Early Permian ◽  
New Genus And Species

A new genus and species, Glanomerope virgoferroa gen. et sp. nov., the first Permian record of a scorpionfly from Germany, is described from the Niedermoschel black shale, Meisenheim Formation, Lower Rotliegend of the Saar-Nahe basin. It is assigned to the Protomeropidae, the oldest known family of the holometabolous superorder Panorpida, ranging from the Bashkirian-Moscovian (Late Carboniferous) to the Roadian. It confirms that this family was very diverse in Central Europe during the Early Permian. Protomeropidae possibly became extinct in the course of major climatic changes that progressively affected the supercontinent Pangea after the Artinskian, although generally these changes seem to have more severely affected some other insects such as the palaeopteran Dictyoneuridae than holometabolous groups.

A new genus and species of lungless salamander (family Plethodontidae) from the Appalachian highlands of the south-eastern United States

2009 ◽  
Vol 279 (1) ◽  
pp. 86-94 ◽  
Author(s):  
C. D. Camp ◽  
W. E. Peterman ◽  
J. R. Milanovich ◽  
T. Lamb ◽  
J. C. Maerz ◽  
...  
Keyword(s):  
United States ◽  
New Genus ◽  
Eastern United States ◽  
New Genus And Species ◽  
The South ◽  
South Eastern
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