The Early Cambrian worm tube Onuphionella from California and Nevada

1988 ◽  
Vol 62 (2) ◽  
pp. 233-240 ◽  
Author(s):  
Philip W. Signor ◽  
Mark A. S. Mcmenamin
Keyword(s):  
New Species ◽  
North America ◽  
Lower Cambrian ◽  
Early Cambrian ◽  
Western North America ◽  
Baltic Region ◽  
Two New Species ◽  
Modern Genus ◽  
The Baltic ◽  
Middle Member

Two new species of worm tubes referable to the genus Onuphionella occur in Lower Cambrian strata in eastern California and western Nevada. Onuphionella durhami n. sp. is found in the Campito Formation (in pre-trilobite strata, in the Fallotaspis and, possibly, the Nevadella Zones) and O. claytonensis n. sp. occurs in the Middle Member of the Poleta Formation (Nevadella Zone). The unusual tubes are armored with an imbricated coat of mica flakes, reminiscent of the modern genus Owenia. The lowest occurrence of Onuphionella in western North America corresponds closely with the lowest occurrence of the genus in the Baltic region, indicating that correlations between the two regions are not greatly in error.

Lower Cambrian (Branchian) trilobites and biostratigraphy of the Hanford Brook Formation, southern New Brunswick

2000 ◽  
Vol 74 (5) ◽  
pp. 858-878 ◽  
Author(s):  
Stephen R. Westrop ◽  
Ed Landing
Keyword(s):  
New Species ◽  
Nova Scotia ◽  
North America ◽  
New Brunswick ◽  
Lower Cambrian ◽  
Early Cambrian ◽  
The West ◽  
Middle Cambrian ◽  
Sequence Stratigraphic ◽  
Two New Species

The Hanford Brook Formation, one of the classic Cambrian units of Avalonian North America, contains at least eight species of endemic trilobites, including Berabichia milleri Westrop n. sp., that are assigned to seven genera. The vertical succession of faunas is far more complex than has been recognized previously, with each member containing a lithofacies-specific assemblage. These are, in ascending order: a bradoriid-linguloid Association without trilobites in the nearshore St. Martin's Member, a Protolenus Association in dysaerobic siltstones and sandstones of the Somerset Street Member, and a Kingaspidoides-Berabichia Association in hummocky cross-stratified sandstones of the Long Island Member that overlie a parasequence boundary at Hanford Brook. Due to the breakdown of biogeographic barriers in the late Early Cambrian, two new species-based zones, the Protolenus elegans and Kingaspidoides cf. obliquoculatus zones, share trilobite genera with the Tissafinian Stage of Morocco. This generic similarity has been the basis for correlation of this upper Lower Cambrian interval on the Avalon continent with the West Gondwanan lowest Middle Cambrian. However, the clear facies control on the occurrence of genera in the Hanford Brook Formation and the presence of an abrupt faunal break and unconformity at the base of the Tissafinian in Morocco makes this correlation questionable. The Hanford Brook Formation may represent a late Early Cambrian interval unknown in Gondwana. Sequence-stratigraphic criteria even raise the possibility that the Protolenus Association is the biofacies equivalent of Callavia broeggeri Zone faunas of the Brigus Formation of Newfoundland, Nova Scotia and Massachusetts.

The problematic fossil Triplicatella from the Early Cambrian of Greenland, Canada, and Siberia

2004 ◽  
Vol 41 (11) ◽  
pp. 1273-1283 ◽  
Author(s):  
Christian B Skovsted ◽  
John S Peel ◽  
Christian J Atkins
Keyword(s):  
New Species ◽  
Functional Morphology ◽  
Lower Cambrian ◽  
Early Cambrian ◽  
Taxonomic Affinity ◽  
East Greenland ◽  
North East ◽  
Close Proximity ◽  
Two New Species

The cap-shaped Early Cambrian fossil Triplicatella, previously known only from Australia, is reported from the upper Lower Cambrian of North and North-East Greenland, western Newfoundland, and Siberia. The occurrence of Triplicatella in Laurentia strengthens faunal ties between Laurentia and the Australian margin of Gondwana in late Early Cambrian times and supports hypotheses advocating the close proximity for the two palaeocontinents. Two new species, Triplicatella sinuosa n. sp., and T. peltata n. sp. are described, morphological details of which help elucidate the functional morphology and taxonomic affinity of the group. Three opercular types attributable to Triplicatella are left in open taxonomy. The postulated affinity of Triplicatella to hyoliths is confirmed, although the genus can not be placed within either of the two orders of hyoliths currently recognized.

EPIDAMAEUS (ACARI: DAMAEIDAE) OF ARCTIC WESTERN NORTH AMERICA AND EXTREME NORTHEAST, U.S.S.R.

1983 ◽  
Vol 115 (10) ◽  
pp. 1253-1289 ◽  
Author(s):  
Valerie M. Behan-Pelletier ◽  
Roy A. Norton
Keyword(s):  
New Species ◽  
North America ◽  
Western North America ◽  
Two New Species

AbstractEight species of Epidamaeus of arctic western North America and extreme northeast, U.S.S.R. are discussed. Two new species, Epidamaeus hammerae and E. tritylos, are proposed and E. arcticolus, E. kodiakensis, E. mackenziensis, E. bakeri, E. coxalis and E. fortispinosus, previously described by Hammer, are redescribed.

Two New Species of Cymopterus (Umbelliferae) from Western North America

Brittonia ◽  
1985 ◽  
Vol 37 (1) ◽  
pp. 88 ◽  
Author(s):  
Ronald L. Hartman ◽  
Lincoln Constance
Keyword(s):  
New Species ◽  
North America ◽  
Western North America ◽  
Two New Species

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.

REVISION OF THE GENUS EUDASYPHORA TOWNSEND (DIPTERA: MUSCIDAE), AND REFLECTIONS ON ITS EVOLUTION

1980 ◽  
Vol 112 (4) ◽  
pp. 345-373 ◽  
Author(s):  
Robert Cuny
Keyword(s):  
New Species ◽  
North America ◽  
Forest Vegetation ◽  
Western North America ◽  
Pleistocene Glaciations ◽  
Oriental Region ◽  
Two New Species ◽  
History Of ◽  
Holarctic Region ◽  
Biogeographic Analysis

AbstractThe genus Eudasyphora Townsend 1911 is resurrected from junior synonymy and recognized with the genera Dasyphora Robineau-Desvoidy 1830 and Pyrellia Robineau-Desvoidy 1830. Rypellia Malloch 1932 is a subgenus of Eudasyphora, but Dasypyrellia Lobanov 1976 is reported as synonym novum. A key to the species of Eudasyphora is presented. Two new species are described: E. cordilleriana n. sp. from western North America, and E. canadiana n. sp. from northern North America. The phylogenetic and biogeographic analysis led to the following conclusions: Eudasyphora became separated from its sister genus Pyrellia before the beginning of the Pleistocene glaciations. The Rypellia line evolved further in the Oriental Region, whereas the Eudasyphora s. str. line developed in the Holarctic Region. Speciation in both subgenera is correlated with the history of the forest vegetation during the Pleistocene.

New species of Braggia (Hemiptera: Aphididae) on buckwheat in western North America

2009 ◽  
Vol 141 (6) ◽  
pp. 561-581
Author(s):  
K.S. Pike ◽  
G. Graf ◽  
R.G. Foottit ◽  
H.E.L. Maw ◽  
P. Starý ◽  
...  
Keyword(s):  
New Species ◽  
North America ◽  
Mitochondrial Cytochrome ◽  
Northern California ◽  
Western North America ◽  
Oxidase Subunit ◽  
Two New Species

AbstractSpecies of Braggia Gillette and Palmer (Hemiptera: Aphididae: Aphidinae: Aphidini) feed on various buckwheat, Eriogonum Michx. (Polygonaceae), species in western North America. Two new species, Braggia columbiana Pike n. sp. from Washington and Oregon and Braggia longicauda Pike n. sp. from Washington, Oregon, and northern California, are proposed. Descriptions, diagnoses, illustrations, mitochondrial cytochrome c oxidase subunit 1 “barcode” sequences, a key to the species of Braggia, and notes on biology, distribution, and parasitoid associations are provided.

A review of the pine-feeding Lithophane lepida species group (Lepidoptera: Noctuidae), with descriptions of two new species

2003 ◽  
Vol 135 (1) ◽  
pp. 53-62
Author(s):  
James T. Troubridge ◽  
J. Donald Lafontaine
Keyword(s):  
New Species ◽  
North America ◽  
Species Group ◽  
Female Genitalia ◽  
Western North America ◽  
Key To Species ◽  
Male And Female ◽  
Two New Species ◽  
Lepidoptera Noctuidae

AbstractThe species of the Lithophanelepida Grote complex are reviewed and two new species of the genus Lithophane Hübner from western North America are described. Adults of all species are illustrated, as well as male and female genitalia (where known) and larva of L.lepida and Lithophane itata (Smith). A key to species of the L. lepida group is provided.

TWO NEW AMELETUS MAYFLIES (EPHEMEROPTERA: AMELETIDAE) FROM WESTERN NORTH AMERICA

1999 ◽  
Vol 131 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Jacek Zloty ◽  
Françoise Harper
Keyword(s):  
New Species ◽  
North America ◽  
Identification Key ◽  
Western North America ◽  
Diagnostic Features ◽  
Two New Species

AbstractTwo new species, Ameletus minimus sp.nov. and Ameletus quadratus sp.nov., are described and illustrated from material collected in Oregon. Diagnostic features for these two species and their relationships with other Ameletus species are discussed. An identification key to the western species of the Ameletus celer Group is also included.

Sign in / Sign up

Export Citation Format

Share Document