The northernmost occurrence of Prognathodon (Squamata: Mosasauridae) from the Western Interior Seaway of North America

2012 ◽  
Vol 49 (9) ◽  
pp. 1111-1115 ◽  
Author(s):  
Takuya Konishi
Keyword(s):  
New Zealand ◽  
North America ◽  
Geographic Range ◽  
Polar Regions ◽  
Western Interior Seaway ◽  
Marginal Tooth ◽  
Geographic Ranges ◽  
Evolutionary Success ◽  
Marine Reptile ◽  
New Discovery

The marine reptile Prognathodon (Squamata: Mosasauridae), a mosasaurine mosasaur exhibiting a characteristically robust skull and dentition, lived during the last two ages of the Late Cretaceous. Fossilized remains of animals assigned to this genus are so far known from North America, Europe, Africa, and New Zealand, indicating their wide geographic ranges and presumed ecological and evolutionary success. Assignable to Prognathodon, a newly discovered partial marginal tooth from Dorothy, Alberta, Canada (51°15′48″N), extends the geographic range of the genus by 190 km northward in the Northern Hemisphere. Coupled with the New Zealand record of this mosasaur, the new discovery indicates that Prognathodon likely ranged anywhere from 60°N to 60°S paleolatitude, and these reptiles may even have been occasional inhabitants of the polar regions.

scholarly journals First records of a Plesiosaurian (Reptilia: Sauropterygia) and an Ichthyosaur (Reptilia: Ichthyosauria) from Yukon, Canada

2013 ◽  
Vol 127 (3) ◽  
pp. 234 ◽  
Author(s):  
James A. Campbell ◽  
Claudia J. Schröder-Adams ◽  
James W. Haggart ◽  
Patrick S. Drucken-Miller ◽  
Michael J. Ryan ◽  
...  
Keyword(s):  
North America ◽  
Lower Cretaceous ◽  
Ex Situ ◽  
The Arctic ◽  
Western Interior Seaway ◽  
Taxonomic Assignment ◽  
First Report ◽  
The Road ◽  
Marine Reptile

An isolated centrum collected ex situ from marine shales of the Lower Cretaceous (Albian) Arctic Red Formation along the Road River represents the first documented occurrence of a plesiosaurian from Yukon. This centrum represents the northernmost occurrence of plesiosaurians in the Western Interior Sea of North America prior to the establishment of the first continuous seaway (Western Interior Seaway) connecting the Boreal and Tethyan seas. Additionally, this centrum is potentially the second-oldest elasmosaurid specimen known from North America. A second centrum, collected along the Beaver River, is likely derived from the Lower Cretaceous (Lower Albian) Garbutt Formation exposed farther upstream. It represents the first report of an ichthyosaur from Yukon. Additionally, six associated ribs collected from the Arctic Red Formation along the Peel River may also belong to a marine reptile; however, poor preservation of these ribs prevents a definitive taxonomic assignment.

scholarly journals Potential geographic distribution and ecological niche of the insect order Megaloptera: the case of the neartic-neotropical transition zone

2022 ◽  
Author(s):  
Hugo Alejandro Álvarez ◽  
Miguel Alejandro Rivas-Soto
Keyword(s):  
North America ◽  
Transition Zone ◽  
Ecological Niche ◽  
New World ◽  
Geographic Range ◽  
Important Variable ◽  
Ecological Niche Models ◽  
Geographic Ranges ◽  
Insect Order ◽  
Potential Geographic Distribution

The Megaloptera are an interesting, but relatively poorly studied group of insects. Among the new world Megaloptera, it is not known the effect of the neartic-neotropical transition zone on their biogeographic distribution. Here we present potential geographic distributions based on ecological niche models of the species of Megaloptera from North America that occurred in the transition zone. Results suggested that the geographic range of Corydalinae (dobsonflies) in the transition zone is associated to mountainous formations and that most species favour for warm climates with higher precipitation rates. Climate types tend to be important for species that show narrow geographic ranges, but precipitation tends to be the most important variable to explain species dispersion. In addition, Chauliodinae (fishflies) and Sialidae (alderflies) may have no relation with the transition zone. Overall, our models support the dispersion of dobsonflies from the neotropics to North America and explain the two endemisms in Mexico as the result of the formation of the transition zone.

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

Amia cf. pattersoni from the Paleocene Paskapoo Formation of Alberta

2000 ◽  
Vol 37 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Lance Grande ◽  
Li Guo-Qing ◽  
Mark VH Wilson
Keyword(s):  
North America ◽  
Fish Fauna ◽  
Taxonomic Diversity ◽  
Geographic Range ◽  
Green River Formation ◽  
Early Eocene ◽  
Freshwater Teleost ◽  
Additional Material ◽  
Green River ◽  
South Central

A well-prepared anterior half of an amiid skull from the Late Paleocene Paskapoo Formation of south-central Alberta is described. The specimen is either very closely related to, or conspecific with, Amia pattersoni Grande and Bemis, 1998, from the Early Eocene Green River Formation of Wyoming. We leave the specimen as Amia cf. pattersoni until additional material is found to further clarify its relationships. Amia cf. pattersoni is the oldest known specimen clearly identifiable as belonging to the genus Amia (sensu Grande and Bemis, 1998), and the Paskapoo species extends the known geographic range of Amia both northward and westward. The fish assemblage of the Paskapoo Formation represents the most diverse freshwater Paleocene fish fauna known from North America. Based on comparisons of sample size and relative taxonomic diversity to the better known Green River Formation localities of Wyoming, we predict that further collecting will substantially increase the known diversity of the Paskapoo fauna. The Paskapoo Formation, therefore, has great potential to continue adding to the meager knowledge of pre-Eocene freshwater teleost diversity in North America.

Return of the Natives: Explaining the Development and Non-Development of Political Action by Indigenous Peoples in Democratic Political Systems

2012 ◽  
Vol 19 (4) ◽  
pp. 453-480
Author(s):  
Lee E. Dutter
Keyword(s):  
New Zealand ◽  
North America ◽  
Indigenous Peoples ◽  
Political Action ◽  
The Political ◽  
Political Systems ◽  
Present Treatment ◽  
Or Groups ◽  
Torres Strait ◽  
Political Actions

Studies of individuals or groups who might use violence or terrorism in pursuit of political goals often focus on the specific actions which these individuals or groups have taken and on the policies which defenders (that is, governments of states) against such actions may adopt in response. Typically, less attention is devoted to identifying the relevant preconditions of political action and possible escalation to violence and how or why potential actions may be obviated before they occur. In the context of democratic political systems, the present analysis addresses these issues via examination of indigenous peoples, who typically constitute tiny fractions of the population of the states or regions in which they reside, in terms of their past and present treatment by governments and the political actions, whether non-violent or violent, which individuals from these peoples have engaged or may engage. The specific peoples examined are Aborigines and Torres Strait Islanders of Australia, Haudenosaunee of North America, Inuit of Canada, Maori of New Zealand, and Saami of Scandinavia.

Peronospora farinosa. [Distribution map].

1981 ◽  
Author(s):  
Keyword(s):  
South Africa ◽  
New Zealand ◽  
North America ◽  
South America ◽  
Central America ◽  
West Indies ◽  
Spinacia Oleracea ◽  
Uttar Pradesh ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Peronospora farinosa Kiessl. Hosts: Beet (Beta vulgaris) and other B. spp., Spinach (Spinacia oleracea), Chenopodium spp. Information is given on the geographical distribution in AFRICA, Ethiopia, Kenya, Libya, Morocco, South Africa, Tanzania, Zimbabwe, ASIA, Afghanistan, Burma, China, Hong Kong, India (Northern States) (Uttar Pradesh) (Madhya Pradesh), Iran, Iraq, Israel, Japan, Korea, Lebanon, Mongolia, Nepal, Pakistan, Taiwan, Thailand, Turkey, USSR, AUSTRALASIA & OCEANIA, Australia, New Zealand, EUROPE, Austria, Belgium, Britain, Bulgaria, Cyprus, Czechoslovakia, Denmark, France, Germany, Greece, Hungary, Iceland, Irish Republic, Italy (Sardina), Malta, Netherlands, Norway, Poland, Portugal, Romania, Spain, Sweden, Switzerland, USSR, Yugoslavia, NORTH AMERICA, Canada, Mexico, USA, CENTRAL AMERICA & WEST INDIES, Guatemala, SOUTH AMERICA, Argentina, Bolivia, Brazil (Sao Paulo), Chile, Ecuador, Peru, Uruguay.

Corynebacterium michiganense pv. michiganense. [Distribution map].

1984 ◽  
Author(s):  
Keyword(s):  
South Africa ◽  
New Zealand ◽  
North America ◽  
South America ◽  
Central America ◽  
West Indies ◽  
Buenos Aires ◽  
Distribution Map ◽  
Rio Negro ◽  
New Distribution

Abstract A new distribution map is provided for Corynebacterium michiganense pv. michiganense (E.F. Smith) Jensen. Hosts: Tomato (Lycopersicon esculentun). Information is given on the geographical distribution in AFRICA, Kenya, Madagascar, Morocco, South Africa, Tunisia, Uganda, Zambia, Zimbabwe, ASIA, China, India (Nagpur), Israel, Japan, Lebanon, Turkey, AUSTRALASIA & OCEANIA, Australia, Hawaii, New Zealand, EUROPE, Austria, Britain, Channel Islands (Jersey), Bulgaria, Germany, Greece, Hungary, Ireland, Italy (incl. Sicily), Norway, Portugal, Romania, Sardinia, Switzerland, USSR (general, Lithuania, W. Siberia and Crimea), Yugoslavia, NORTH AMERICA, Canada, Nova Scotia, Mexico, USA (general), CENTRAL AMERICA & WEST INDIES, Costa Rica, Cuba, Dominica, Dominican Republic, Panama, SOUTH AMERICA, Argentina (Buenos Aires), (Goldenberg), (Mendoza), (Misiones & Rio Negro), Brazil (Sao Paulo), Chile (Santiago), Colombia, Peru.

Cecidophyopsis ribis. [Distribution map].

1986 ◽  
Author(s):  
Keyword(s):  
New Zealand ◽  
North America ◽  
Leningrad Region ◽  
Distribution Map ◽  
Black Currant ◽  
Altai Region ◽  
Gall Mite ◽  
Ribes Spp ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Cecidophyopsis ribis (Westwood) Acarina: Eriophyidae Black currant gall mite, black currant big bud mite, currant bud mite. Attacks Ribes spp., notably black currant. Information is given on the geographical distribution in EUROPE, Austria, Belgium, Bulgaria, Czechoslovakia, Denmark, Finland, France, Germany, East Germany, West Malta, Netherlands, Norway, Poland, Spain, Sweden, Switzerland, United Kingdom, Yugoslavia, USSR, Georgian SSR, Latvian SSR, Lithuanian SSR, Russian SFSR, Altai region, Karelia, Krasnodar, Kursk, Leningrad region, Moscow region, Murmansk, Sakhalin, Siberia, AUSTRALASIA, Australia, New Zealand, NORTH AMERICA, Canada, British Columbia.

Sign in / Sign up

Export Citation Format

Share Document