The Sweetognathus complex in the Permian of China: implications for evolution and homeomorphy

1987 ◽  
Vol 61 (5) ◽  
pp. 1047-1057 ◽  
Author(s):  
Wang Cheng-Yuan ◽  
Scott M. Ritter ◽  
David L. Clark
Keyword(s):  
New Species ◽  
North America ◽  
New Genus ◽  
Late Permian ◽  
Western North America ◽  
Evolutionary Studies ◽  
Complete Sequences ◽  
Iterative Evolution

The well-exposed and fossiliferous Permian carbonates in China have yielded Early and Late Permian species of the Sweetognathus complex that permit worldwide stratigraphic evaluation of members of the group. The sporadic appearance of species of Sweetognathus and related genera throughout the Permian in western North America and Iran, in particular, may represent iterative evolution and homeomorphy. The pectiniform element morphologies of the several species are interpreted as most important for evolutionary studies and document a partial Permian biostratigraphy in China that aids in the interpretation of less complete sequences elsewhere. A new genus, Pseudosweetognathus, and four new species, Pseudosweetognathus costatus, Sweetognathus subsymmetricus, S. paraguizhouensis, and Iranognathus nudus, are described.

Kochiella Poulsen, 1927, and Hadrocephalites new genus (Trilobita: Ptychopariida) from the early Middle Cambrian of western North America

2002 ◽  
Vol 76 (1) ◽  
pp. 76-94 ◽  
Author(s):  
Frederick A. Sundberg ◽  
Linda B. McCollum
Keyword(s):  
New Species ◽  
North America ◽  
New Genus ◽  
Western North America ◽  
Type Specimens ◽  
Middle Cambrian ◽  
Informal Group ◽  
Nomen Dubium

Kochaspids are an informal group of ptychopariid trilobites that were both abundant and widespread in the early Middle Cambrian of North America. Based on the reassociation of pygidia and cranidia of some kochaspids, Kochiella Poulsen, 1927, is redefined and Hadrocephalites n. gen. is proposed. Hadrocephalites includes taxa previously assigned by Rasetti and Palmer to Schistometopus Resser, 1938a. Schistometopus is considered nomen dubium. Representatives of Kochiella and Hadrocephalites from the Pioche Shale and Carrara Formation of Nevada are described, including the new species Kochiella rasettii, K. brevaspis, Hadrocephalites lyndonensis, and H. rhytidodes. Other kochaspids previously assigned to Kochaspis Resser, 1935; Eiffelaspis Chang, 1963; Schistometopus; and Kochiella are discussed and some are reassigned. The type specimens of Kochiella augusta (Walcott, 1886); K. crito (Walcott, 1917b); K. chares (Walcott, 1917a); K. mansfieldi Resser, 1939; K. arenosa Resser, 1939; Hadrocephalites carina (Walcott, 1917b), and H. cecinna (Walcott, 1917b) are re-illustrated.

Description of a new genus and two new species of cutworm moths (Lepidoptera: Noctuidae)

2004 ◽  
Vol 136 (6) ◽  
pp. 823-834
Author(s):  
J. Donald Lafontaine ◽  
James T. Troubridge
Keyword(s):  
New Species ◽  
Costa Rica ◽  
North America ◽  
Male Genitalia ◽  
New Genus ◽  
Western North America ◽  
Two New Species ◽  
Lepidoptera Noctuidae

AbstractAlastriagen. nov. is described, and Callierges tropicalis Schaus is transferred to the genus. Alastria chicosp. nov. is described from western North America and Alastria machosp. nov. is described from Costa Rica. We provide illustrations of the adults and genitalia of all three species, as well as the male genitalia of two related genera, Nedra Clarke and Actinotia Hübner.

The oldest Inocelliidae (Raphidioptera) from the Eocene of western North America

2019 ◽  
Vol 151 (04) ◽  
pp. 521-530 ◽  
Author(s):  
Vladimir N. Makarkin ◽  
S. Bruce Archibald ◽  
James E. Jepson
Keyword(s):  
New Species ◽  
North America ◽  
New Genus ◽  
Middle Eocene ◽  
Hind Wing ◽  
Western North America ◽  
Northwestern Montana ◽  
The Family ◽  
Okanagan Highlands ◽  
One New Species

AbstractOne new genus of Inocelliidae (Raphidioptera) with one new species and one undetermined specimen is described from the Eocene of North America: Paraksenocellia borealis new genus, new species from the early Eocene (Ypresian) Okanagan Highlands shale at Driftwood Canyon, British Columbia, Canada (a forewing), and Paraksenocellia species from the middle Eocene (Lutetian) of the Coal Creek Member of the Kishenehn Formation, northwestern Montana, United States of America (a hind wing). These are the oldest records of the family. The new genus possesses many character states that are rare in Inocelliidae, e.g., a very long pterostigma extending to ScP in both the forewings and hind wings; the forewing subcostal space has three crossveins; the forewing and hind wing AA1 are deeply forked; the crossvein between CuA and CuP is located far distad the crossvein 1r-m. Paraksenocellia is confidently a member of the Inocelliidae, as it possesses a proximal shift of the basal crossvein 1r-m (connecting R and M) in the forewing and the loss of the basal crossvein 1r-m in the hind wing, both apomorphies of the family. It shares some character states with the Mesozoic Mesoraphidiidae, which we consider to be mostly stem-group plesiomorphies.

Baiotomeus, a new ptilodontid multituberculate (Mammalia) from the middle Paleocene of western North America

1987 ◽  
Vol 61 (3) ◽  
pp. 595-603 ◽  
Author(s):  
David W. Krause
Keyword(s):  
Species Richness ◽  
New Species ◽  
North America ◽  
Type Species ◽  
New Genus ◽  
Western North America ◽  
Land Mammal

Baiotomeus is a new genus of ptilodontid multituberculate from the late Torrejonian Land-Mammal Age (late middle Paleocene) of western North America. Baiotomeus douglassi (Simpson), the type species, has been assigned, at one time or another, to Ptilodus, Mimetodon, and Neoplagiaulax. In addition, a second, new species, B. lamberti, from three localities in the Medicine Rocks area of southeastern Montana is reported here. The Medicine Rocks localities are tentatively assigned a latest Torrejonian age, younger than localities yielding B. douglassi and younger than previously suggested on the basis of plesiadapid primates.Multituberculates appear to have attained their highest species richness during the Torrejonian Land-Mammal Age, but the discovery of B. lamberti illustrates that our knowledge of multituberculate diversity is incomplete from even that interval of time.

CERATOZETIDAE (ACARI: ORIBATEI) OF THE WESTERN NORTH AMERICAN SUBARCTIC

1986 ◽  
Vol 118 (10) ◽  
pp. 991-1057 ◽  
Author(s):  
Valerie M. Behan-Pelletier
Keyword(s):  
New Species ◽  
North America ◽  
North American ◽  
New Genus ◽  
Oribatid Mite ◽  
Western North America ◽  
The North ◽  
North American Arctic ◽  
Mite Family

AbstractRepresentatives of the oribatid mite family Ceratozetidae of subarctic western North America, including 14 species in eight genera, are treated. A new genus Laminizetes, and eight new species, Diapterobates siccatus, Trichoribates ogilviensis, Laminizetes fortispinosus, Ceratozetes inupiaq, C. kutchin, C. fjellbergi, Sphaerozetes firthensis, and Melanozetes tanana, are proposed, and Dentizetes rudentiger Hammer, Diapterobates humeralis (Hermann), Neogymnobates luteus (Hammer), Trichoribates striatus Hammer, Sphaerozetes castaneus Hammer, and Melanozetes meridianus Sellnick are redescribed. Immatures of Dentizetes rudentiger and Sphaerozetes firthensis are described. A key to the adults of the 31 species of Ceratozetidae recorded from the western North American arctic and subarctic is given. Relationships among the 12 genera in the Ceratozetidae recorded from the North American arctic and subarctic are discussed.

Discussion of the systematic placement of the Ordovician brachiopod genera Cooperea and Craspedelia by Cocks and Rong (1989)

1991 ◽  
Vol 65 (5) ◽  
pp. 742-755 ◽  
Author(s):  
A. W. Potter
Keyword(s):  
New Species ◽  
North America ◽  
New Genus ◽  
Late Ordovician ◽  
Simple Type ◽  
Western North America ◽  
Cardinal Process ◽  
The Family ◽  
Three New Species ◽  
First Time

Cocks and Rong (1989) subdivided the species of the Ordovician brachiopod genus Bimuria into two groups, those with a simple, or not undercut, cardinal process and those with an undercut cardinal process. They placed the second group in a new genus, Cooperea, and grouped Cooperea with Craspedelia in the new subfamily Craspedeliinae of the family Sowerbyellidae. However, the cardinal process of Bimuria ranges from not undercut to undercut within at least two species. Cooperea is therefore placed in synonymy with Bimuria, and Craspedelia is returned to the Bimuriidae.Cocks and Rong (1989) inferred that, with rare exceptions, the cardinal process of the Plectambonitacea evolved from simple to trifid to undercut. The evidence from Bimuria indicates, however, that the undercut process developed more than once and, in Bimuria, directly from the simple type.As an adjunct to the above discussion three new species are described: Bimuria gilbertella, Craspedelia intonsa, and Craspedelia sp. 1. Craspedelia is a rarely reported genus documented here for the first time in western North America (northern California). Additional evidence is introduced that the ratio Lmusbv/Lebv decreased from middle to late Ordovician species of Bimuria.

scholarly journals Henryognathus thomasi, a new genus and new species of Arctostaphylos-feeding plant bug from western North America (Miridae, Phylinae, Phylini)

ZooKeys ◽  
2018 ◽  
Vol 796 ◽  
pp. 281-289
Author(s):  
Randall T. Schuh ◽  
Ruth Salas
Keyword(s):  
New Species ◽  
North America ◽  
Male Genitalia ◽  
New Genus ◽  
Western North America ◽  
Morphological Attributes

Henryognathus, new genus, with the single included new species H.thomasi, is described from western North America. The taxon is recorded as feeding on species of Arctostaphylos (Ericaceae) in California and Arizona. Coloration and many morphological attributes are similar to species of Plagiognathus Fieber, but the structure of the male genitalia is distinctive.

scholarly journals IV.—Descriptions of New Species and of a New Genus of Polyzoa from the Palæozoic Rocks of North America

1875 ◽  
Vol 2 (1) ◽  
pp. 33-38 ◽  
Author(s):  
H. Alleyne Nicholson
Keyword(s):  
New Species ◽  
North America ◽  
New Genus ◽  
Convex Surfaces ◽  
Cylindrical Tubes

Polyzoary (?) forming a simple, flattened, unbranehed, two-edged frond, with sub-parallel sides, consisting of two series of cells, the bases of which rest upon opposite sides of a thin longitudinally-striated central membrane or laminar axis, from which they pass obliquely outwards in opposite directions. The cells open in longitudinal rows on the two flat or slightly convex surfaces of the frond, and have the form of more or less cylindrical tubes, which are septate or are divided transversely by a series of well-developed tabulæ. In the only species known the cells of a few of the median rows of the frond are straight, but those of the lateral rows are oblique. Cell-mouths unknown.

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