Helmolepis cyphognathus, sp. nov., a new platysiagid actinopterygian from the Lower Triassic Sulphur Mountain Formation (British Columbia, Canada)

2005 ◽  
Vol 42 (1) ◽  
pp. 25-36 ◽  
Author(s):  
Andrew G Neuman ◽  
Raoul J Mutter
Keyword(s):  
British Columbia ◽  
New Species ◽  
Central Europe ◽  
Middle Triassic ◽  
Lower Triassic ◽  
Western Canada ◽  
Early Triassic ◽  
East Greenland ◽  
The Family ◽  
A New Species

A new species of stem actinopterygian, Helmolepis cyphognatus sp. nov., is reported from the Lower Triassic Sulphur Mountain Formation of western Canada (probably Smithian). This taxon differs from the only other known Early Triassic platysiagid, H. gracilis from the Lower Triassic Wordie Creek Formation of East Greenland (Griesbachian), in counts of branchiostegal rays, shape of the maxilla, shape (and possibly counts) of extrascapulars, and the size ratio of major opercular bones. In spite of their overall unfavorable preservation, the numerous available specimens amend our knowledge of the little known genus Helmolepis considerably: it has become evident that the morphology of Helmolepis cyphognatus sp. nov. comes closest to Platysiagum minus (Middle Triassic Besano Formation of central Europe). This study suggests placement of the two genera in the family Platysiagidae. Investigation of this new species also shows certain features of the cheek and the caudal fin are more primitive than previously believed, whereas the snout region is probably derived but of yet uncertain affinities in Helmolepis.

Ichthyosaurs (Reptilia, Ichthyosauria) from the Lower and Middle Triassic Sulphur Mountain Formation, Wapiti Lake area, British Columbia, Canada

1989 ◽  
Vol 26 (7) ◽  
pp. 1491-1500 ◽  
Author(s):  
Jack M. Callaway ◽  
Donald B. Brinkman
Keyword(s):  
British Columbia ◽  
North America ◽  
Middle Triassic ◽  
Lower Triassic ◽  
Early Triassic ◽  
Lake Area ◽  
New Information ◽  
The Family

Ichthyosaurs are found in the Lower and Middle Triassic members of the Sulphur Mountain Formation in the Wapiti Lake area, British Columbia. Three species are recognized: Pessosaurus sp. in the family Shastasauridae from the Middle Triassic, Mixosaurus cf. M. nordenskioeldii in the family Mixosauridae from the Lower and Middle Triassic, and Phalarodon cf. P. fraasi in the family Omphalosauridae from the Middle Triassic. Other ichthyosaur material in the Lower Triassic (Smithian) member is the oldest known from North America and coeval with the oldest known elsewhere but cannot be identified confidently at this time. This material provides new information relative to the paleobiogeography of early ichthyosaurs and additional confirmation that ichthyosaurs were already highly specialized and quite diverse by the Early Triassic.

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.

A New Species ofProtamphisopusNicholls (Crustacea, Isopoda, Phreatoicidea) from Middle Triassic Luoping Fauna of Yunnan Province, China

2010 ◽  
Vol 84 (5) ◽  
pp. 1003-1013 ◽  
Author(s):  
Wan-Lu Fu ◽  
George D. F. Wilson ◽  
Da-Yong Jiang ◽  
Yuan-Lin Sun ◽  
Wei-Cheng Hao ◽  
...  
Keyword(s):  
New Species ◽  
Fresh Water ◽  
Yunnan Province ◽  
Middle Triassic ◽  
Marine Habitat ◽  
Marine Fauna ◽  
Biogeographic Patterns ◽  
The Family ◽  
A New Species ◽  
Stratigraphic Range

Fossil isopod crustaceans in the suborder Phreatoicidea have a known stratigraphic range from the Carboniferous to the Jurassic. Until now, all Mesozoic records of this group were thought to occur in fresh water habitats. A new phreatoicidean isopod fossil of the Triassic Luoping marine fauna, Yunnan Province, China, is described. The new species, based on several exceptionally complete specimens, is assigned to the genusProtamphisopusNicholls and the family Amphisopidae Nicholls. This Chinese record is the first report of a Mesozoic-age phreatoicidean isopod outside of Gondwanan terranes, requiring a revision of known biogeographic patterns of the Phreatoicidea. Whether this record is from a marine habitat or is the result of a secondary deposition is not certain.SottyellaRacheboef, Schram and Vidal from the Carboniferous (Stephanian) Lagerstätte of Montceaules-Mines that was assigned to this suborder may be a decapod. Therefore, it has no relationship to this new species.

A new species of dorid nudibranch (Opisthobranchia: Mollusca) belonging to the genus Anisodoris

1982 ◽  
Vol 60 (11) ◽  
pp. 2694-2705 ◽  
Author(s):  
Sandra V. Millen
Keyword(s):  
British Columbia ◽  
New Species ◽  
Larval Development ◽  
Taxonomic Status ◽  
Ground Colour ◽  
Large Size ◽  
The Family ◽  
Shallow Subtidal ◽  
A New Species

A new species of Anisodoris (Opisthobranchia: Mollusca) is described. It is found in shallow, subtidal, rocky areas in southern British Columbia, Canada. This species is characterized by its large size, by its white or creamy ground colour with large brown blotches on the dorsum, and by the scalloped, platelike spines on its penis. Its spawn and embryological and larval development are described. The taxonomic status of this species is discussed in relation to genera in the family Discodorididae. The new species is compared with all known species of the genus Anisodoris.

Xenyllodes wapiti sp.n., a new species of Collembola (Odontellidae) from western Canada

1985 ◽  
Vol 16 (2) ◽  
pp. 131-133
Author(s):  
Arne Fjellberg
Keyword(s):  
British Columbia ◽  
New Species ◽  
Western Canada ◽  
Montane Forests ◽  
A New Species

AbstractXenyllodes wapiti sp.n., is the second known species of the genus, discovered in montane forests in British Columbia and Saskatchewan. It differs from the Holarctic X.armatus Axelson by 2+2 ocelli, shorter furca and more complete chaetotaxy.

Fishes from the Lower Triassic portion of the Sulphur Mountain Formation in Alberta, Canada: geological context and taxonomic composition

2015 ◽  
Vol 52 (8) ◽  
pp. 557-568 ◽  
Author(s):  
Andrew G. Neuman
Keyword(s):  
Environmental Factors ◽  
Middle Triassic ◽  
Lower Triassic ◽  
Taxonomic Composition ◽  
Marine Fishes ◽  
Early Triassic ◽  
Western Margin ◽  
East Greenland ◽  
The North ◽  
North American Craton

The Sulphur Mountain Formation in Alberta, Canada, comprises shales, siltstones, and limestones laid down on the continental shelf and shoreline along the western margin of the North American Craton during the Early and Middle Triassic. At least 13 taxa of fossil marine fishes have been found at a number of Triassic localities along the Front Ranges and foothills in Alberta. Common taxa (Boreosomus, Birgeria, Bobasatrania, Australosomus, Saurichthys, parasemionotids, and coelacanths) found at localities in Alberta are similar to those found at the classic Lower and Middle Triassic localities near Wapiti Lake, British Columbia, and in East Greenland, Spitzbergen, Madagascar, and China. The occurrence of Lower Triassic fishes in western Alberta shows that this fauna was widespread, occurring over at least 1000 km of shoreline, and that ecological and environmental factors were similar along the western edge of the Panthalassic Ocean during the Early Triassic.

Coniosternum masneri sp. nov., a new species of the family Scathophagidae (Diptera) from Canada

2017 ◽  
Vol 186 (1) ◽  
pp. 113-116
Author(s):  
František Šifner
Keyword(s):  
New Species ◽  
Diagnostic Characters ◽  
The Family ◽  
A New Species

Abstract A new Nearctic species of the genus Coniosternum Becker, 1894, C. masneri sp. nov., is described from Canada, and its important diagnostic characters are illustrated.

A new species of the montane lacewing genus Rapisma McLachlan (Neuroptera, Ithonidae) from northwestern Yunnan, China

Zootaxa ◽  
2020 ◽  
Vol 4763 (3) ◽  
pp. 439-443
Author(s):  
XINGYUE LIU
Keyword(s):  
New Species ◽  
Southeast Asia ◽  
East Asia ◽  
South Asia ◽  
The Family ◽  
A New Species ◽  
Northwestern Yunnan

The genus Rapisma McLachlan, 1866 (montane lacewings) is a rare and little known group of the family Ithonidae (Insecta: Neuroptera). There have been 21 described species of Rapisma, and all of them are distributed from East Asia, South Asia and Southeast Asia. Here I report a new species of Rapisma from northwestern Yunnan, China, namely Rapisma weixiense sp. nov. The new species belongs to a group of Rapisma species with very short antennae. 

Description of a new species of Auriculostoma (Digenea: Allocreadiidae) from Characidium heirmostigmata (Characiformes: Crenuchidae) from Argentina, using morphological and molecular data

2021 ◽  
Vol 95 ◽  
Author(s):  
M.M. Montes ◽  
J. Barneche ◽  
Y. Croci ◽  
D. Balcazar ◽  
A. Almirón ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
National Park ◽  
Molecular Data ◽  
Rrna Gene ◽  
28S Rrna ◽  
The Family ◽  
Parasitological Survey ◽  
Morphological And Molecular Data ◽  
A New Species

Abstract During a parasitological survey of fishes at Iguazu National Park, Argentina, specimens belonging to the allocreadiid genus Auriculostoma were collected from the intestine of Characidium heirmostigmata. The erection of the new species is based on a unique combination of morphological traits as well as on phylogenetic analysis. Auriculostoma guacurarii n. sp. resembles four congeneric species – Auriculostoma diagonale, Auriculostoma platense, Auriculostoma tica and Auriculostoma totonacapanensis – in having smooth and oblique testes, but can be distinguished by a combination of several morphological features, hosts association and geographic distribution. Morphologically, the new species can be distinguished from both A. diagonale and A. platense by the egg size (bigger in the first and smaller in the last); from A. tica by a shorter body length, the genital pore position and the extension of the caeca; and from A. totonacapanensis by the size of the oral and ventral sucker and the post-testicular space. Additionally, one specimen of Auriculostoma cf. stenopteri from the characid Charax stenopterus (Characiformes) from La Plata River, Argentina, was sampled and the partial 28S rRNA gene was sequenced. The phylogenetic analysis revealed that A. guacurarii n. sp. clustered with A. tica and these two as sister taxa to A. cf. stenopteri. The new species described herein is the tenth species in the genus and the first one parasitizing a member of the family Crenuchidae.

A new species and further records of quill mites (Acari: Cheyletoidea: Syringophilidae) parasitic on birds (Aves) in England

Zootaxa ◽  
2009 ◽  
Vol 2133 (1) ◽  
pp. 49-54 ◽  
Author(s):  
BARRY NATTRESS ◽  
MACIEJ SKORACKI
Keyword(s):  
New Species ◽  
Length Ratio ◽  
Additional Species ◽  
Tawny Owl ◽  
Strix Aluco ◽  
Quill Mites ◽  
The Family ◽  
Transverse Branch ◽  
One New Species ◽  
A New Species

Four additional species of quill mites of the family Syringophilidae Lavoipierre have now been recorded in England. This includes one new species, Bubophilus aluconis sp. nov., which parasitizes the tawny owl Strix aluco (Strigiformes: Strigidae). It differs from other species of this genus, B. ascalaphus Philips et Norton, 1978 and B. asiobius Skoracki et Bochkov, 2002 by the number of chambers in transverse branch of the peritremes (2-3), the length ratio of setae vi and ve (1:1.6-2), and the lengths of the stylophore and aggenital setae ag1 (180 and 135-145, respectively).

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