Early Devonian stylonurine eurypterids from Arctic Canada

2010 ◽  
Vol 47 (11) ◽  
pp. 1405-1415 ◽  
Author(s):  
James C. Lamsdell ◽  
Simon J. Braddy ◽  
Elizabeth J. Loeffler ◽  
David L. Dineley
Keyword(s):  
Depositional Environment ◽  
Northern Coast ◽  
Arctic Canada ◽  
Early Devonian ◽  
Large Size

Two new stylonurine eurypterids are described from the Peel Sound Formation (Early Devonian, Lochkovian) of the northern coast of Prince of Wales Island, Nunavut, Arctic Canada. Associations including pteraspids and ostracodes indicate a fluvial depositional environment. An almost complete stylonurid, Pagea plotnicki sp. nov., is recognized by its large size and lack of vaulting on the carapace, and it provides evidence that Stylonurus and Pagea are sister-taxa. Also, a smaller incomplete rhenopterid assigned to Leiopterella tetliei gen. et sp. nov., is characterized by its broad turbinate carapace and lack of cuticular sculpture. This assemblage provides the first Canadian record of Pagea, and the youngest occurrence of a rhenopterid outside the Rheno-Hercynian Terrane, indicating that these taxa were more geographically widespread than previously supposed.

Early Devonian stylonurine eurypterids from Arctic Canada (project)

10.7934/p541 ◽  
2014 ◽  
Author(s):  
C Lamsdell ◽  
J Braddy ◽  
J Loeffler ◽  
L Dineley
Keyword(s):  
Arctic Canada ◽  
Early Devonian

Perfluorinated Chemicals in Meromictic Lakes on the Northern Coast of Ellesmere Island, High Arctic Canada + Online Appendix 1 (See Article Tools)

ARCTIC ◽  
2012 ◽  
Vol 65 (3) ◽  
Author(s):  
Julie Veillette ◽  
Derek C.G. Muir ◽  
Dermot Antoniades ◽  
Christine Spencer ◽  
Tracey N. Loewen ◽  
...  
Keyword(s):  
High Arctic ◽  
Ellesmere Island ◽  
Northern Coast ◽  
Meromictic Lakes ◽  
Arctic Canada ◽  
Online Appendix ◽  
Perfluorinated Chemicals

Early Devonian stylonurine eurypterids from Arctic Canada [X1285] (matrix)

10.7934/x1285 ◽  
2014 ◽  
Author(s):  
C Lamsdell ◽  
J Braddy ◽  
J Loeffler ◽  
L Dineley
Keyword(s):  
Arctic Canada ◽  
Early Devonian

Early Devonian eurypterids from the Northwest Territories of Arctic Canada

2000 ◽  
Vol 37 (8) ◽  
pp. 1167-1175 ◽  
Author(s):  
Simon J Braddy ◽  
Jason A Dunlop
Keyword(s):  
Northwest Territories ◽  
Marine Environment ◽  
Plant Material ◽  
Canadian Arctic ◽  
Arctic Canada ◽  
Early Devonian ◽  
Rock Formation

A new eurypterid fauna from the Lower Bear Rock Formation (Early Devonian, Emsian) of Anderson River, in the Northwest Territories of the Canadian Arctic, is described. The material comprises an almost complete specimen and five isolated carapaces of Erieopterus microphthalmus; an incomplete carapace and telson referred to Drepanopterus sp.; and an isolated prosomal appendage of Carcinosoma sp. Associations include actinopterygian, sarcopterygian, and acanthodian fish, as well as lingulids, conchostracans, ostracodes, coprolites, and plant material. A nearshore marine environment is inferred. This assemblage provides the first Canadian record of Drepanopterus and the youngest Canadian occurrences of erieopterid and carcinosomatid eurypterids.

The role of contemporaneous faulting on Late Silurian sedimentation in the eastern M'Clintock Basin, Prince of Wales Island, Arctic Canada

1986 ◽  
Vol 23 (9) ◽  
pp. 1401-1411 ◽  
Author(s):  
Paul S. Mortensen ◽  
Brian Jones
Keyword(s):  
Carbonate Platform ◽  
Fold Belt ◽  
Arctic Canada ◽  
Early Devonian ◽  
Eastern Margin ◽  
Basement Faults ◽  
Somerset Island ◽  
East West

During the Late Silurian, the eastern margin of the M'Clintock Basin was the site of slow sedimentation on a relatively stable carbonate platform. It is apparent, however, that contemporaneous (syndepositional) faults segmented this basin into several quasi-independent subbasins during deposition of the Cape Storm, Douro, and Somerset Island formations. Differential subsidence of these subbasins played a major role in controlling sedimentation patterns and stratigraphie thickness. These subbasins may have been sustained into the Early Devonian, as is evident from the facies of the overlying Peel Sound Formation. The east–west orientated, reactivated basement faults bounding the subbasins served as zones of weakness during the development of the Cornwall is Fold Belt and are evident in the present-day outcrop.

Middle Devonian brachiopods from the Bird Fiord Formation, Arctic Canada

2003 ◽  
Vol 77 (2) ◽  
pp. 243-266 ◽  
Author(s):  
Li Rong-Yu ◽  
Brian Jones
Keyword(s):  
New Species ◽  
Middle Devonian ◽  
Canadian Arctic ◽  
Ellesmere Island ◽  
The Arctic ◽  
Arctic Canada ◽  
Early Devonian ◽  
Delta Plain ◽  
The Cross

The late Early Devonian to Middle Devonian Bird Fiord Formation, which is up to 900 m thick, is exposed along an extensive outcrop belt from stretches from Ellesmere Island to Bathurst Island in Arctic Canada. This formation, which encompasses sediments that accumulated in sabkha, deltaic, and shelf settings, is divided into six members. The Blubber Point, Baad Fiord, Norwegian Bay, and Cardigan Strait members, which include sediments that formed on an open marine shelf, are characterized by a diverse biota of brachiopods, mollusks, corals, trilobites, and sponges. The Cross Bay and Grise Fiord members, which encompass sediments that formed in a sabkha and delta plain settings, respectively, are generally devoid of fossils.A collection of 47,026 brachiopods, which came from 140 collections made at 34 locations throughout the outcrop belt of the Bird Fiord Formation, contains 22 species of brachiopods that belong to 21 genera. This biota includes six new species: Gypidula mega, Spinatrypa (Isospinatrypa) parva, Desquamatia (Independatrypa) fortis, Nucleospira stelcki, Warrenella grinnellensis, and Cranaena briceae. Four genera (Arcticastrophia Li and Jones, 2002, Borealistrophia Li and Jones, 2002, Grinnellathyris Li and Jones, 2002, and Costacranaena Johnson and Perry, 1976) and 16 species of brachiopods are endemic to the Arctic Canada. Conversely, the fauna also includes European elements such as Nucleospira lens (Schnur), Spinatrypa (Isospinatrypa), and Warrenella. These taxa may indicate that there was some communication between the Canadian Arctic and Europe during Middle Devonian.

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