Refinements of the “Baja British Columbia” Plate-Tectonic Model for Northward Translation Along the Margin of Western North America

2013 ◽  
pp. 101-111 ◽  
Author(s):  
Paul J. Umhoefer ◽  
Joe Dragovich ◽  
Jeff Cary ◽  
David C. Engebretson
Keyword(s):  
British Columbia ◽  
North America ◽  
Plate Tectonic ◽  
Western North America ◽  
Tectonic Model

Supplemental material: Cenozoic to Recent plate configurations in the Pacific Basin: Ridge subduction and slab window magmatism in western North America

2006 ◽  
Author(s):  
J.K. Madsen ◽  
D.J. Thorkelson ◽  
R.M. Friedman ◽  
D.D. Marshall
Keyword(s):  
North America ◽  
Pacific Basin ◽  
Western North America ◽  
File Size ◽  
Tectonic Model ◽  
Ridge Subduction ◽  
The Pacific ◽  
Northwestern North America ◽  
Slab Window

Geosphere, February 2006, v. 2, p. 11-34, doi: 10.1130/GES00020.1. Movie 1 - Tectonic model for the Pacific Basin and northwestern North America from 53 Ma to 39 Ma. The file size is 1.3 MB.

Japewia Subaurifera, A New Lichen Genus and Species From North-West Europe and Western North America

1990 ◽  
Vol 22 (3) ◽  
pp. 205-212 ◽  
Author(s):  
T. Tønsberg
Keyword(s):  
British Columbia ◽  
North America ◽  
Western North America ◽  
Coniferous Trees ◽  
North West

AbstractThe genus Japewia Tønsb. is introduced to accommodate three species including J. subaurifera Muhr & Tønsb. sp. nov. based on material from Norway, Sweden, Finland, Scotland, Canada (British Columbia) and U.S.A. (Washington). This species is closely related to Lecidea tornoensis Nyl. but is distinguished in being sorediate and by the production of lobaric acid (accessory) and acetone-soluble pigments. It grows on bark of deciduous and coniferous trees. Lecidea carrollii Coppins & P. James and L. tornoensis Nyl. are transferred to Japewia.

The Lower Jurassic phosphorites of southeastern British Columbia and terrane accretion to western North America

1989 ◽  
Vol 26 (8) ◽  
pp. 1612-1616 ◽  
Author(s):  
T. P. Poulton ◽  
J. D. Aitken
Keyword(s):  
British Columbia ◽  
North America ◽  
Oceanic Crust ◽  
West Coast ◽  
Cold Water ◽  
Lower Jurassic ◽  
Depositional Model ◽  
Western North America ◽  
The West ◽  
Terrane Accretion

Sinemurian phosphorites in southeastern British Columbia and southwestern Alberta conform with the "West Coast type" phosphorite depositional model. The model indicates that they were deposited on or near the Early Jurassic western cratonic margin, next to a sea or trough from which cold water upwelled. This suggests that the allochthonous terrane Quesnellia lay well offshore in Sinemurian time. The sea separating Quesnellia from North America was partly floored by oceanic crust ("Eastern Terrane") and partly by a thick sequence of rifted, continental terrace wedge rocks comprising the Purcell Supergroup and overlying Paleozoic sequence. This sequence must have been depressed sufficiently that access of upwelling deep currents to the phosphorite depositional area was not impeded.

NEW NEARCTIC CRANE-FLIES (TIPULIDAE, DIPTERA), PART XIX

1943 ◽  
Vol 75 (8) ◽  
pp. 139-145 ◽  
Author(s):  
Charles P. Alexander
Keyword(s):  
British Columbia ◽  
North America ◽  
Type Material ◽  
Western North America ◽  
Crane Flies ◽  
The Individual

The crane-flies considered herewith are all from Western North America, from British Columbia to California. The names of the collectors and the location of the type material are indicated at the end of the individual specific accounts; where not stated to the contrary, such types are preserved in my own collection of these flies.

A New Gunnel, Pholis clemensi, from the Coast of Western North America

1964 ◽  
Vol 21 (5) ◽  
pp. 933-939 ◽  
Author(s):  
Richard H. Rosenblatt
Keyword(s):  
British Columbia ◽  
New Species ◽  
North America ◽  
North American ◽  
North American Species ◽  
Western North America ◽  
The North ◽  
The Family ◽  
Juan De Fuca ◽  
A New Species

A new species, Pholis clemensi, referred to the family Pholidae, is named and described from 12 specimens taken in southern British Columbia waters and the Strait of Juan de Fuca. Pholis clemensi is compared with other members of the genus, and a key is given to the North American species.

The millipede family Striariidae Bollman, 1893. II. New records and species of the genus Amplaria Chamberlin, 1941 (Diplopoda, Chordeumatida, Striarioidea)

Zootaxa ◽  
2021 ◽  
Vol 4908 (2) ◽  
pp. 205-224
Author(s):  
WILLIAM A. SHEAR
Keyword(s):  
British Columbia ◽  
New Species ◽  
North America ◽  
New Records ◽  
Western North America ◽  
San Luis ◽  
Senior Synonym ◽  
Northern Idaho

The millipede genus Amplaria Chamberlin, 1941 (senior synonym of Vaferaria Causey, 1958 and Speostriaria Causey, 1960) is endemic to western North America, from Mt. Palomar and San Luis Obispo, California, north to southwestern British Columbia, Canada, and east to northern Idaho. Seven species names are currently assigned to the genus. Below I describe ten additional new species: Amplaria crawfordi, Amplaria fontinalis, Amplaria rykkenae, Amplaria arcata, Amplaria baughi, Amplaria staceyi, Amplaria umatilla, Amplaria cervus, Amplaria mendocino and Amplaria flucticulus, and provide new records of Amplaria nazinta Chamberlin. 

Early Eocene (Ypresian) birds from the Okanagan Highlands, British Columbia (Canada) and Washington State (USA)

2019 ◽  
Vol 56 (8) ◽  
pp. 803-813
Author(s):  
Gerald Mayr ◽  
S. Bruce Archibald ◽  
Gary W. Kaiser ◽  
Rolf W. Mathewes
Keyword(s):  
British Columbia ◽  
North America ◽  
Fossil Record ◽  
Washington State ◽  
Fossil Birds ◽  
Early Eocene ◽  
Western North America ◽  
Postcranial Skeleton ◽  
The North ◽  
Okanagan Highlands

We survey the known avian fossils from Ypresian (early Eocene) fossil sites of the North American Okanagan Highlands, mainly in British Columbia (Canada). All specimens represent taxa that were previously unknown from the Eocene of far-western North America. Wings from the McAbee site are tentatively referred to the Gaviiformes and would constitute the earliest fossil record of this group of birds. A postcranial skeleton from Driftwood Canyon is tentatively assigned to the Songziidae, a taxon originally established for fossils from the Ypresian of China. Two skeletons from Driftwood Canyon and the McAbee site are tentatively referred to Coliiformes and Zygodactylidae, respectively, whereas three further fossils from McAbee, Blakeburn, and Republic (Washington, USA) are too poorly preserved for even a tentative assignment. The specimens from the Okanagan Highlands inhabited relatively high paleoaltitudes with microthermal climates (except Quilchena: lower mesothermal) and mild winters, whereas most other Ypresian fossil birds are from much warmer lowland paleoenvironments with upper mesothermal to megathermal climates. The putative occurrence of a gaviiform bird is particularly noteworthy because diving birds are unknown from other lacustrine Ypresian fossil sites of the Northern Hemisphere. The bones of the putative zygodactylid show a sulphurous colouration, and we hypothesize that this highly unusual preservation may be due to the metabolic activity of sulphide-oxidizing bacteria.

Baeomyia n.g. (Diptera: Tachinidae): descriptions and notes about phylogenetic and zoogeographic relationships

1984 ◽  
Vol 62 (7) ◽  
pp. 1387-1396
Author(s):  
James E. O'Hara
Keyword(s):  
British Columbia ◽  
North America ◽  
Distribution Pattern ◽  
Type Species ◽  
American Southwest ◽  
Western North America ◽  
Adult Males ◽  
Phylogenetic Data ◽  
Males And Females ◽  
The Relationship

Baeomyia n.g. is described for a group of small (2–3 mm long) tachinids belonging to the Siphona group of the Siphonini. All known specimens were collected in western North America, with two species recorded from southern British Columbia (Baeomyia xanthogaster n. sp. and Baeomyia juniperi n. sp.) and three species recorded from desert localities in the American Southwest (type-species Baeomyia hurdi (Reinhard), Baeomyia antennata n. sp. and Baeomyia sonorensis n. sp.). Keys to adult males and females are provided for separation of species. Systematics of the Siphonini and Siphona group are reviewed, including a discussion of the synapomorphies upon which each is defined. Baeomyia species are inferred to form a monophyletic taxon within the Siphona group on the basis of five synapomorphies, though the relationship between the genus and other Siphona group taxa is unresolved. The apparent disjunction of Baeomyia species into northern and southern ranges may be the result of relatively recent speciation events, because differences among species are slight. A detailed zoogeographic analysis of the distribution pattern must await further phylogenetic data.

ERGASILUS NERKAE N. SP. (COPEPODA: CYCLOPOIDA) FROM BRITISH COLUMBIA WITH A DISCUSSION OF THE COPEPODS OF THE E. CAERULEUS GROUP

1963 ◽  
Vol 41 (1) ◽  
pp. 115-124 ◽  
Author(s):  
Larry S. Roberts
Keyword(s):  
British Columbia ◽  
New Species ◽  
North America ◽  
Parasitic Copepod ◽  
Western North America ◽  
A New Species ◽  
Copepoda Cyclopoida

A new species of parasitic copepod occurring in western North America is described, Ergasilus nerkae n. sp. An emendation of E. turgidus Fraser, 1920 and a redescription of E. auritus Markevich, 1940 are presented. A total of four species resembling E. caeruleus (E. turgidus, E. confusus Bere, 1931, E. auritus, and E. nerkae) have so far been described, and characters to distinguish the species of this group are given.

BIONOMICS OF ENOCLERUS BARRI (COLEOPTERA: CLERIDAE)

1969 ◽  
Vol 101 (4) ◽  
pp. 382-386 ◽  
Author(s):  
Richard E. Rice
Keyword(s):  
British Columbia ◽  
Life Cycle ◽  
North America ◽  
Sex Ratio ◽  
Rocky Mountain ◽  
Mountain Region ◽  
Western North America ◽  
Adult Females ◽  
Rocky Mountain Region ◽  
Life Cycle Stages

AbstractEnoclerus barri Knull occurs in western North America from British Columbia south to Mexico and throughout the Rocky Mountain region. Adults were collected at Grass Valley, Calif., from May to September at traps baited with beetle attractants. Collections occurred at temperatures ranging from 22.5° to 31 °C; the sex ratio of trapped beetles was 4.5 females to 1 male. Duration of life cycle stages at 24 ± 2 °C were: egg, 9 days; larva, first iastar, 14 days; second instar, 12 days; third instar feeding stage, 14 days. All larvae reared to third instar failed to pupate in the laboratory. Adult females of unknown age when collected lived from 10 to 131 days and produced an average of 389 eggs per female. Enoclerus barri utilized six species of Scolytidae as hosts in the laboratory.

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