Mid-Cambrian (Marjuman) trilobites from the Pika Formation, southern Canadian Rocky Mountains, Alberta

1994 ◽  
Vol 31 (6) ◽  
pp. 969-985 ◽  
Author(s):  
Adam Melzak ◽  
Stephen R. Westrop
Keyword(s):  
New Species ◽  
North America ◽  
Rocky Mountains ◽  
Canadian Rocky Mountains ◽  
Inner Shelf ◽  
Low Diversity ◽  
A New Species ◽  
Open Shelf

The carbonates and fine siliciclastics of the Mid-Cambrian (Marjuman) Pika Formation in the southern Canadian Rocky Mountains provide an important record of inner-shelf trilobite biofacies. The faunas are characterized by low diversity and, in contrast to the more diverse open-shelf faunas of other parts of North America, agnostid trilobites are absent. A new biostratigraphic framework of two zones and two informal faunas is proposed for use in inner-shelf settings. Twenty-seven collections from three sections yielded at least eight genera and thirteen species; Marjumia bagginsi is a new species.

scholarly journals Draba calcifuga (Brassicaceae), a New Species from the Rocky Mountains of North America

2009 ◽  
Vol 19 (2) ◽  
pp. 182-186
Author(s):  
Peter Lesica
Keyword(s):  
New Species ◽  
North America ◽  
Rocky Mountains ◽  
A New Species

A NEW SPECIES OF MASISTYLUM IN THE NEARCTIC REGION (DIPTERA: TACHINIDAE)

1974 ◽  
Vol 106 (2) ◽  
pp. 175-178 ◽  
Author(s):  
D. M. Wood
Keyword(s):  
British Columbia ◽  
New Species ◽  
North America ◽  
Rocky Mountains ◽  
First Time ◽  
A New Species ◽  
Nearctic Region

AbstractThe genus Masistylum is redescribed. It is recorded for the first time in North America. M. stenommatum n. sp., from the Rocky Mountains of northern British Columbia, is described and figured.

Wildfires in the southern Canadian Rocky Mountains and their relationship to mid-tropospheric anomalies

1993 ◽  
Vol 23 (6) ◽  
pp. 1213-1222 ◽  
Author(s):  
E.A. Johnson ◽  
D.R. Wowchuk
Keyword(s):  
North America ◽  
Rocky Mountains ◽  
Large Scale ◽  
Fire Frequency ◽  
Fuel Moisture ◽  
Large Fire ◽  
Canadian Rocky Mountains ◽  
Area Burned ◽  
Upper Level ◽  
Moisture Conditions

In this paper we present evidence for a large-scale (synoptic-scale) meteorological mechanism controlling the fire frequency in the southern Canadian Rocky Mountains. This large-scale control may explain the similarity in average fire frequencies and timing of change in average fire frequencies for the southern Canadian Rocky Mountains. Over the last 86 years the size distribution of fires (annual area burned) in the southern Canadian Rockies was distinctly bimodal, with a separation between small- and large-fire years at approximately 10–25 ha annual area burned. During the last 35 years, large-fire years had significantly lower fuel moisture conditions and many mid-tropospheric surface-blocking events (high-pressure upper level ridges) during July and August (the period of greatest fire activity). Small-fire years in this period exhibited significantly higher fuel moisture conditions and fewer persistent mid-tropospheric surface-blocking events during July and August. Mid-tropospheric surface-blocking events during large-fire years were teleconnected (spatially and temporally correlated in 50 kPa heights) to upper level troughs in the North Pacific and eastern North America. This relationship takes the form of the positive mode of the Pacific North America pattern.

Widespread infection of the Eastern red-spotted newt (Notophthalmus viridescens) by a new species of Amphibiocystidium, a genus of fungus-like mesomycetozoan parasites not previously reported in North America

Parasitology ◽  
2007 ◽  
Vol 135 (2) ◽  
pp. 203-215 ◽  
Author(s):  
T. R. RAFFEL ◽  
T. BOMMARITO ◽  
D. S. BARRY ◽  
S. M. WITIAK ◽  
L. A. SHACKELTON
Keyword(s):  
New Species ◽  
North America ◽  
Infectious Diseases ◽  
Emerging Infectious Diseases ◽  
Seasonal Distribution ◽  
Notophthalmus Viridescens ◽  
Amphibian Species ◽  
Mortality And Morbidity ◽  
Causative Agents ◽  
A New Species

SUMMARYGiven the worldwide decline of amphibian populations due to emerging infectious diseases, it is imperative that we identify and address the causative agents. Many of the pathogens recently implicated in amphibian mortality and morbidity have been fungal or members of a poorly understood group of fungus-like protists, the mesomycetozoans. One mesomycetozoan, Amphibiocystidium ranae, is known to infect several European amphibian species and was associated with a recent decline of frogs in Italy. Here we present the first report of an Amphibiocystidium sp. in a North American amphibian, the Eastern red-spotted newt (Notophthalmus viridescens), and characterize it as the new species A. viridescens in the order Dermocystida based on morphological, geographical and phylogenetic evidence. We also describe the widespread and seasonal distribution of this parasite in red-spotted newt populations and provide evidence of mortality due to infection.

Planalvus (Brachiopoda, Athyridida) from the Lower Devonian of the Armorican Massif, northwest France

1994 ◽  
Vol 68 (3) ◽  
pp. 451-460 ◽  
Author(s):  
Patrick R. Racheboeuf ◽  
Paul Copper ◽  
Fernando Alvarez
Keyword(s):  
New Species ◽  
North America ◽  
Lower Devonian ◽  
Eastern North America ◽  
Lower Carboniferous ◽  
Armorican Massif ◽  
A New Species

Cryptonella? cailliaudi Barrois, 1889, from the Lower Devonian of the Armorican Massif, is tentatively assigned to the athyridid brachiopod genus Planalvus Carter, thus far known only from the Lower Carboniferous of eastern North America. In addition, a new species, Planalvus rufus, is described from the Bois-Roux Formation (Pragian) of Brittany, France. These French species are small brachiopods with complex spiralial and jugal structures, which permit assignment to the order Athyridida.

scholarly journals Notes on the Mountain Sheep of North America, with a Description of a New Species

1902 ◽  
Vol 53 (1366supp) ◽  
pp. 21896-21898
Author(s):  
William T. Hornaday ‡
Keyword(s):  
New Species ◽  
North America ◽  
A New Species

scholarly journals Apheloria polychroma, a new species of millipede from the Cumberland Mountains (Polydesmida: Xystodesmidae)

Zootaxa ◽  
2018 ◽  
Vol 4375 (3) ◽  
pp. 409
Author(s):  
PAUL E. MAREK ◽  
JACKSON C. MEANS ◽  
DEREK A. HENNEN
Keyword(s):  
New Species ◽  
North America ◽  
Mississippi River ◽  
Appalachian Mountains ◽  
Eastern North America ◽  
Ouachita Mountains ◽  
Model Species ◽  
Color Morphs ◽  
Cumberland Mountains ◽  
A New Species

Millipedes of the genus Apheloria Chamberlin, 1921 occur in temperate broadleaf forests throughout eastern North America and west of the Mississippi River in the Ozark and Ouachita Mountains. Chemically defended with toxins made up of cyanide and benzaldehyde, the genus is part of a community of xystodesmid millipedes that compose several Müllerian mimicry rings in the Appalachian Mountains. We describe a model species of these mimicry rings, Apheloria polychroma n. sp., one of the most variable in coloration of all species of Diplopoda with more than six color morphs, each associated with a separate mimicry ring.

Spirorchis spp. (Digenea: Schistosomatoidea) infecting map turtles (Cryptodira: Emydidae: Graptemys spp.) in southeastern North America: A new species, molecular phylogenies, and key to species

2018 ◽  
Vol 96 (1) ◽  
pp. 51-64 ◽  
Author(s):  
Jackson R. Roberts ◽  
Micah B. Warren ◽  
Kenneth M. Halanych ◽  
Stephen A. Bullard
Keyword(s):  
New Species ◽  
North America ◽  
Key To Species ◽  
Molecular Phylogenies ◽  
Map Turtles ◽  
A New Species

scholarly journals VII.—Diagnosis of a new species of Hesperomys from North America

1887 ◽  
Vol 19 (109) ◽  
pp. 66-66
Author(s):  
Oldfield Thomas
Keyword(s):  
New Species ◽  
North America ◽  
A New Species
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