A new species of the ptilodontid multituberculate Prochetodon (Mammalia, Allotheria) from the Paleocene Paskapoo Formation of Alberta, Canada

2004 ◽  
Vol 41 (2) ◽  
pp. 237-246 ◽  
Author(s):  
Craig S Scott
Keyword(s):  
United States ◽  
New Species ◽  
North America ◽  
Evolutionary History ◽  
The United States ◽  
Primitive Form ◽  
Late Paleocene ◽  
History Of ◽  
A New Species

A new species of the ptilodontid multituberculate genus Prochetodon (Mammalia, Allotheria) from the Paleocene Paskapoo Formation of Alberta, Canada, is described. Prochetodon speirsae sp. nov. is the oldest discovered species of the genus, extending the temporal range of Prochetodon earlier into the Paleocene. It exhibits a mosaic of primitive and derived dental features suggestive of a position phylogenetically intermediate between Ptilodus and Prochetodon. Newly discovered specimens from the late Paleocene Gao Mine locality are referred tentatively to Prochetodon foxi. The occurrence of a primitive form of Prochetodon in sediments of early Tiffanian age suggests the evolutionary history of the genus is more complex than previously appreciated. Prochetodon joins a number of well-documented, progressive mammalian taxa making their first appearance in the Western Interior of North America at higher latitudes, well before their first known occurrence in the United States, suggesting a possible origin and immigration from currently unsampled habitats.

scholarly journals Cicinnus chambersi: a new species of sack-bearer moth (Lepidoptera, Mimallonidae, Cicinninae) from southeastern Arizona, USA

ZooKeys ◽  
2020 ◽  
Vol 931 ◽  
pp. 49-71
Author(s):  
Ryan A. St Laurent ◽  
Lawrence E. Reeves ◽  
Akito Y. Kawahara
Keyword(s):  
United States ◽  
New Species ◽  
The United States ◽  
The Other ◽  
Type Locality ◽  
Sky Islands ◽  
Future Studies ◽  
History Of ◽  
The Common ◽  
A New Species

A new species of cicinnine Mimallonidae, Cicinnus chambersisp. nov., is described from the Sky Islands Region of southern Arizona, USA. The new species is closely related to C. mexicana (Druce), type locality Veracruz, Mexico, based on morphology and genetics. The other Cicinnus species known from the United States, the common C. melsheimeri (type locality Pennsylvania, USA) is morphologically and genetically distinct from both C. chambersi and C. mexicana. The new species is compared to C. mexicana and C. melsheimeri, as well as other Mexican Cicinnus. The life history of C. chambersi is unknown, but its description should facilitate future studies on this rarely reported North American mimallonid, a species which may have only recently become established in the United States. Cicinnus chambersi is the fifth known Mimallonidae species from the United States, and the first described from the country in nearly half a century.

Notes on pachycephalosaurid dinosaurs (Reptilia: Ornithischia) from North America, with comments on their status as ornithopods

1979 ◽  
Vol 16 (6) ◽  
pp. 1176-1186 ◽  
Author(s):  
William P. Wall ◽  
Peter M. Galton
Keyword(s):  
United States ◽  
New Species ◽  
North America ◽  
Upper Cretaceous ◽  
New Genus ◽  
First Record ◽  
The United States ◽  
Side Branch ◽  
Conclusive Evidence ◽  
A New Species

Several biologically significant domes of pachycephalosaurid dinosaurs are described and figured. One unusual specimen from the Oldman Formation (Upper Cretaceous) of Alberta is placed into a new genus and another specimen from the same formation is assigned to a new species of Stegoceras. Domes referable to Stegoceras sp. (Judith River and Hell Creek Formations) are the first conclusive evidence of the presence of this genus in the United States. A large dome from the Oldman Formation of Alberta is referred to Pachycephalosaurus; this specimen is the oldest described to date and is the first record of this genus in Canada.Endocranial casts of Yaverlandia bitholus and Stegoceras validus are described along with a discussion of endocranial trends in pachycephalosaurids. The separation between the cerebrum and cerebellum found in Yaverlandia, and typical of ornithopods in general, is lacking in Stegoceras and Pachycephalosaurus. The loss of this separation may be the result of head butting.The family Pachycephalosauridae possesses sufficient ornithopod characters to justify their retention in that suborder. It does, however, represent an aberrant side branch of ornithopod evolution, which can best be visualized taxonomically by placing this family into a separate infraorder within the Ornithopoda.

Description of a new species of Osmia (Hymenoptera: Megachilidae) from southwestern North America, with a redescription of the enigmatic species Osmia foxi Cameron

Zootaxa ◽  
2010 ◽  
Vol 2512 (1) ◽  
pp. 26
Author(s):  
MOLLY G. RIGHTMYER ◽  
TERRY GRISWOLD
Keyword(s):  
United States ◽  
New Species ◽  
New Mexico ◽  
North America ◽  
The United States ◽  
Cochise County ◽  
Hidalgo County ◽  
A New Species

The Osmia of southwestern North America are not well known. A new species, Osmia (Acanthosmioides) palmula, and the enigmatic Osmia (Melanosmia) foxi Cameron, known only from the male holotype, are described and figured in both sexes, with additional comments on their distribution and biology. A checklist and key to the known Osmia species from Cochise County, Arizona, Hidalgo County, New Mexico, and adjacent counties in the United States are presented.

scholarly journals First record of a nonpaleotropical intejocerid cephalopod from Darriwilian (Middle Ordovician) strata of central Spain

2019 ◽  
Vol 94 (2) ◽  
pp. 273-278
Author(s):  
Björn Kröger ◽  
Juan Carlos Gutiérrez-Marco
Keyword(s):  
United States ◽  
New Species ◽  
New Genus ◽  
First Record ◽  
The United States ◽  
Central Spain ◽  
Middle Ordovician ◽  
A New Species

AbstractThe order Intejocerida is an enigmatic, short-lived cephalopod taxon known previously only from Early–Middle Ordovician beds of Siberia and the United States. Here we report a new genus, Cabaneroceras, and a new species, C. aznari, from Middle Ordovician strata of central Spain. This finding widens the paleogeographic range of the order toward high-paleolatitudinal areas of peri-Gondwana. A curved conch, characteristic for the new genus, was previously unknown from members of the Intejocerida.UUID: http://zoobank.org/21f0a09c-5265-4d29-824b-6b105d36b791

scholarly journals Les relations canado-américaines : Nationalisme et continentalisme

2005 ◽  
Vol 14 (1) ◽  
pp. 23-37 ◽  
Author(s):  
Louis Balthazar
Keyword(s):  
United States ◽  
North America ◽  
Manifest Destiny ◽  
The United States ◽  
Cultural Integration ◽  
British North America ◽  
History Of ◽  
Canadian Nationalism ◽  
Set Up ◽  
National Perspective

This paper's objective is to bring forth some elements which confirm the following hypothesis : Canada is consigned to continentalism, namely to economic and cultural integration with the United States though this fact is shrouded in a Canadian nationalism of sorts. The continentalist mentality is rooted in the history of British North America, inhabited mostly by refugees from America who have remained inherently "Yankees" in spite of their anti-americanism. The Confederation itself is based on a sort of complicity with the United States. More recently there were talks of a "North American nationality", and continentalism both cultural and economic has come to be seen as a 'force of nature" which the governments, at the most, put into a chanelling process. Still, it is possible for Canadian nationalism to exist provided it does not go beyond the threshold whence it would run headlong into the continental mentality. Canada has defined itself through an international or non-national perspective far too long for today's nationalism not to remain weak and poorly established. But the Americans whose "manifest destiny" has succeeded in spreading over Canada without even their having tried to hoist their flag there find it to their advantage to maintain some form of Canadian sovereignty. Canada as a "friendly nation" can be of use to Washington. That is why there are almost as many advocates for Canada's independence in the United States as there are north of the border. Canadian nationalism can thus further the interests of some Canadian elites without seriously prejudicing continental integration which can very well afford not to be set up into formalized structures.

A new feather mite species of the genus Neumannella Trouessart, 1916 (Analgoidea, Dermoglyphidae) from the Red-winged Tinamou Rhynchotus rufescens (Temminck, 1815) (Aves, Tinamiformes) with remarks to the evolution of host-parasite associations of the genus

2014 ◽  
Vol 59 (2) ◽  
Author(s):  
Jacek Dabert
Keyword(s):  
New Species ◽  
Evolutionary History ◽  
Morphological Characters ◽  
Mite Species ◽  
Feather Mite ◽  
History Of ◽  
Host Parasite ◽  
Reconciliation Method ◽  
A New Species ◽  
Mite Family

AbstractNeumannella skorackii, a new species of the feather mite family Dermoglyphidae (Acari, Astigmata) is described from the Red-winged Tinamou Rhynchotus rufescens (Temminck, 1815) (Aves, Tinamiformes) from Paraguay and a key to all known species of the genus is provided. The phylogenetic relationships (MP analysis of 25 morphological characters) between Neumannella species along with the evolutionary history of host-parasite associations revealed by Jungle reconciliation method are reconstructed. Relatively low cospeciation contribution to the recent host-parasite associations is discovered.

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