Stratigraphy of eastern Bay of Exploits, Newfoundland

1981 ◽  
Vol 18 (4) ◽  
pp. 751-764 ◽  
Author(s):  
W. S. McKerrow ◽  
L. R. M. Cocks
Keyword(s):  
Debris Flow ◽  
New World ◽  
Upper Ordovician ◽  
Island Formation ◽  
Early Ordovician ◽  
New Name ◽  
Field Evidence ◽  
Continuous Sedimentation ◽  
Stratigraphic Sequences

Fossils from the Fanners Island Formation (new name) show that, southwest of New World Island, Newfoundland, a thick (over 3 km) sequence of late Llandeilo turbidites and basalts overlies the Dunnage mélange. These are overlain by a thicker (6 km) sequence of turbidites, conglomerates, and associated olistostromes assigned to the Sansom Formation. The recognition of olistostromes in the Upper Ordovician (Caradoc and Ashgill) Sansom Formation (some of which contain olistoliths with early Ordovician fossils) eliminates the necessity of postulating repeated stratigraphic sequences by major faults. The field evidence indicates that the olistoliths slipped into a basin with more or less continuous sedimentation of turbidites and debris-flow conglomerates. Major faults separate distinct sequences of turbidites and olistostromes, suggesting that some of the faulting may have been contemporaneous with sedimentation.

Sedimentology of Upper Ordovician – Silurian sequences on New World Island, Newfoundland: separate fault-controlled basins?

1983 ◽  
Vol 20 (3) ◽  
pp. 345-354 ◽  
Author(s):  
R. J. Arnott
Keyword(s):  
Debris Flow ◽  
Black Shale ◽  
New World ◽  
Upper Ordovician ◽  
Sedimentary Sequences ◽  
Narrow Belt ◽  
Two Stages ◽  
Fault Scarps

Remapping of northeast New World Island, Newfoundland demonstrates that two major faults separate three distinct sedimentary sequences, Paleontology and sedimentology indicate that these sequences are partly equivalent in age but were deposited in separate basins of deposition that were adjacent to each other. Active Silurian faults, the Boyds Island and Byrne Cove Faults (new names), bounded the margins of these basins and directly influenced sedimentation by uplifting Ordovician volcanics, limestone, and black shale, which are found both in situ and as blocks within Silurian sediments. Silurian sediments deposited adjacent to these faults are dominated by pebbly mudstones and chaotic bedding interpreted as debris flow deposits and slumped horizons. Away from the fault scarps sedimentation was predominantly axial; it comprises resedimented conglomerates and thick- and thin-bedded sandstone turbidites.West of New World Island, similar synsedimentary faults are confined to a narrow belt south of the Lukes Arm – Sops Head Fault. Two stages of Acadian deformation overprint all structures associated with the Silurian faulting.

Supraspecific taxonomy of the flea beetle genus Blepharida Chevrolat, 1836 (Coleoptera: Chrysomelidae) in the Afrotropical Region and description of Afroblepharida subgen. nov.

2017 ◽  
Vol 48 (2) ◽  
pp. 97-155 ◽  
Author(s):  
Maurizio Biondi ◽  
Roberta Frasca ◽  
Elizabeth Grobbelaar ◽  
Paola D’Alessandro
Keyword(s):  
New World ◽  
Flea Beetle ◽  
Cladistic Analysis ◽  
Morphological Characters ◽  
Sub Saharan Africa ◽  
New Name ◽  
New Subgenus ◽  
Afrotropical Region ◽  
Sub Saharan

The supraspecific taxonomy of the species traditionally attributed to the flea beetle genusBlepharidaChevrolat, 1836 is discussed. A cladistic analysis, based on 30 morphological characters of traditionalBlepharidaspecies, has revealed that two genera occur in Sub-Saharan Africa:CalothecaHeyden, 1887 andBlepharidinaBechyné, 1968. The latter genus is known from Africa, and probably also Madagascar, and has two subgenera:Blepharidinas.str. andAfroblepharidasubgen. nov. Twenty-seven traditionalBlepharidaspecies are here attributed to the genusCalothecaHeyden, while eighteen species are assigned to the genusBlepharidinaBechyné. FourBlepharidinaspecies,antinorii(Chapuis, 1879),gedyei(Bryant, 1948),scripta(Weise, 1904) andsomaliensis(Bryant, 1948), belong to the new subgenusAfroblepharida. The following new synonymies are established:Eutheca conradsiWeise, 1906= Eutheca erlangeriWeise, 1907 syn. nov. =Blepharidella irregularisBryant, 1945 syn. nov.;Blepharida marginalisWeise, 1902 =Blepharida monticolaWeise, 1926 syn. nov. =Blepharida ugandaeBryant, 1944 syn. nov.;Blepharida inornataJacoby, 1895 =Blepharida semisulcataAchard, 1922 syn. nov.;Blepharidella lewiniWeise in Lewin, 1912 =Blepharidella picticollisBryant, 1945 syn. nov.;Podontia nigrotessellataBaly, 1865= Blepharidella rubrosignataBryant, 1945 syn. nov.= Blepharidella variabilisBryant, 1945 syn. nov.;Blepharida ornataBaly, 1881= Blepharida freyiBechyné, 1954 syn. nov.;Podontia reticulataBaly, 1865= Blepharida guttulaBryant, 1944 syn. nov.;Blepharida antinoriiChapuis, 1879 =Blepharida sudanicaBryant, 1944 syn. nov.;Blepharida scriptaWeise, 1904= Blepharida geminataBryant, 1944 syn. nov. In addition:Blepharida plagipennisAchard, 1922, its locality certainly mislabeled, is transferred to the New World genusNotozonaChevrolat, 1837;Calotheca thunbergiis proposed as the new name forBlepharida stolida(Thunberg, 1808). Finally, an updated catalogue of the known species ofCalothecaandBlepharidinais also supplied, including new synonymies, material examined, new faunistic records, distributions and chorotypes.

A reassessment of transport mechanisms of some rock avalanches in the Mackenzie Mountains, Yukon and Northwest Territories, Canada

1990 ◽  
Vol 27 (1) ◽  
pp. 129-144 ◽  
Author(s):  
P. K. Kaiser ◽  
J. V. Simmons
Keyword(s):  
Debris Flow ◽  
Northwest Territories ◽  
Valley Bottom ◽  
Flow Simulations ◽  
Rock Avalanches ◽  
Field Evidence ◽  
Debris Transport ◽  
Glacier Ice ◽  
Mackenzie Mountains ◽  
New Hypothesis

The transport mechanism of some rock avalanches of the Mackenzie Mountains in the Yukon and Northwest Territories of Canada is reassessed on the basis of evidence collected during fieldwork and by comparison with results from numerical simulations of the debris flow mechanism. A new hypothesis of glaciation-related transport is advanced as an alternate explanation of apparently very mobile rock avalanches with anomalous travel distances. By the example of the Avalanche Lake slide, it is demonstrated that the debris was most likely not deposited on the current topography but on valley glacier ice at an elevation of about 400–500 m above the valley bottom. This conclusion is supported by field evidence, an empirical runup relationship, and the results from numerical flow simulations. A qualitative interpretation of other debris deposits suggests that several events in the Mackenzie Mountains can be interpreted in the same manner. Key words: rock avalanches, rock slides, debris transport, debris flow modelling, Mackenzie Mountains, Northwest Territories.

Taxonomic Review of Eumenes Latreille, 1802 (Hymenoptera, Vespidae, Eumeninae) from the New World

Zootaxa ◽  
2018 ◽  
Vol 4459 (1) ◽  
pp. 1
Author(s):  
YURI CAMPANHOLO GRANDINETE ◽  
FERNANDO BARBOSA NOLL ◽  
JAMES CARPENTER
Keyword(s):  
Male Genitalia ◽  
New World ◽  
Identification Key ◽  
External Morphology ◽  
Specific Level ◽  
Taxonomic Review ◽  
New Name ◽  
New Synonymy

The genus Eumenes Latreille, 1802, from the New World, is revised based on external morphology and male genitalia. New synonymy is proposed as follows: E. aureus Isely, 1917 = E. americanus de Saussure, 1852; E. bollii oregonensis Bequaert, 1838, and E. b. ehrenbergi Zavattari, 1912 = E. bollii Cresson, 1872; E. consobrinus pedalis Fox, 1894 = E. consobrinus de Saussure, 1855; E. crucifera bolliformis Viereck, 1908, E. c. nearcticus de Saussure, 1855 and E. c. stricklandi Bequaert, 1944 = E. crucifera Provancher, 1888; E. smithii belfragei Cresson, 1872 = E. smithii de Saussure, 1852; E. verticalis coloradensis Cresson, 1875, E. v. neoboreus Bequaert, 1944, E. v. tricinctus Isely, 1917 = E. verticalis Say, 1824. Eumenes flavitinctus Bohart, 1950, revised status, is no longer a subspecies of E. crucifera but elevated to specific level. Eumenes brunneus is elevated to the specific level and a new name is proposed because of homonymy, E. bequaerti Grandinete & Carpenter nom. nov. An identification key for all the species of the genus from the New World is provided and the geographical distributions are updated. 

Ascaridoid nematodes of amphibians and reptiles: Polydelphis, Travassosascaris n.g. and Hexametra

1978 ◽  
Vol 52 (4) ◽  
pp. 355-384 ◽  
Author(s):  
J. F. A. Sprent
Keyword(s):  
Host Range ◽  
Geographical Distribution ◽  
Type Species ◽  
New World ◽  
New Genus ◽  
Old World ◽  
New Name ◽  
Harmful Effects

ABSTRACTThe ascaridoid nematodes with more than two uterine branches, which occur in snakes and lizards, are grouped into three genera: (1) Polydelphis (without interlabia, with four uterine branches) containing the type species, P. anoura, occuring in Old World Pythons, with P. brachycheilos as a species dubium. (2) Travassosascaris, a new genus with interlabia and with four uterine branches, with type species T. araujoi (new name for P. quadrangularis (Schneider) of Araujo, 1969) occuring in New World rattlesnakes. (3) Hexametra, (without interlabia, with six uterine branches) containing species in lizards and snakes. In lizards, H. hexametra (type species), H. applanata, H.angusticaecoides and H. rotundicaudata are tentatively differentiated. In snakes, two Hexametra species are tentatively differentiated: (1) H. boddaertii (with three synonyms) in New World pit vipers and colubrids; (2) H. quadricornis (with twenty-two synonyms) in Old World viperids, elapids and colubrids. The morphology, host range, geographical distribution, development and harmful effects of these species are discussed.

scholarly journals An unusual sponge – microbe – synsedimentary cement framework in a Late Ordovician reef, Southampton Island (Nunavut, Canada)

2016 ◽  
Vol 53 (8) ◽  
pp. 815-822 ◽  
Author(s):  
Ariane Castagner ◽  
André Desrochers ◽  
Denis Lavoie
Keyword(s):  
Spatial Relationship ◽  
Late Ordovician ◽  
Calcareous Algae ◽  
Upper Ordovician ◽  
Shallow Marine ◽  
Early Ordovician ◽  
Subaerial Exposure ◽  
Close Spatial Relationship ◽  
Diverse Community ◽  
Calcite Cement

A large, resistant buildup at the top of the Upper Ordovician (Hirnantian?) Red Head Rapids Formation on Southampton Island (Nunavut, Arctic Canada) is dominated by massive boundstone and cementstone facies. These massive facies have more in common with the sponge–microbial reefs that dominated worldwide in the Early Ordovician, including the following primary components: early calcified sponge material, microbial elements, and synsedimentary cement. A close spatial relationship between sponge and microbial framework elements suggests that a poorly preserved decaying sponge framework provided substrates for the attachment and development of microbes and that the microbes played essential roles as reef consolidators. Centimetre-scale colonial metazoans are present and locally intergrown with the sponge and microbial components. Other mound-dwelling invertebrates or calcareous algae are rare. Although altered now to calcite, cement fabrics suggest that aragonite was ubiquitous as seafloor precipitate. Prior to its subaerial exposure in the latest Ordovician, the Red Head Rapids Formation buildup developed on the margin of a shallow-marine evaporative epicratonic basin where a diverse community of reef-building metazoans was unable to flourish.

NOTES ON SOME NEW WORLD AND PALEARCTIC SPECIES FORMERLY IN ATHOUS ESCHSCHOLTZ AND HARMINIUS FAIRMAIRE WITH NEW SYNONYMIES (COLEOPTERA: ELATERIDAE)

1979 ◽  
Vol 111 (4) ◽  
pp. 401-415 ◽  
Author(s):  
Edward C. Becker
Keyword(s):  
New World ◽  
New Combinations ◽  
New Name ◽  
Palearctic Species

AbstractThe Nearctic species, as well as several Palearctic species, of Athous Eschscholtz, Harminius Fairmaire, Hemicrepidius Germar, and Acanthathous Champion are studied and rearranged with the following new combinations: the Nearctic Hemicrepidius simplex (LeConte), H. falli (Reitter), and H. palpalis (Fall) (each from Athous); the Palearctic Hemicrepidius hirtus (Herbst) and H. niger (Linnaeus) (each from Athous); Hemicrepidius dauricus (Mannerheim) and H. flavipennis (Cherepanov) (each from Harminius); Hemicrepidius inornatus (Lewis) (from Yukara); and Acanthathous photinoides (Champion), A. campanulatus (Champion), A. mexicanus (Candèze), A. aequinoctialis (Champion), A. marcidus (Champion), A. aztecus (Champion), A. rugipennis (Champion), A. angusticollis (Champion), A. carinicollis (Champion), and A. championi (Schwarz) (each from Athous). Hemicrepidius hirtus (Candèze) (nee hirtus Herbst) is renamed californicus, new name, and the name H. hemipodus (Say) is recognized rather than decoloratus (Say). Pertinent generic characters are illustrated and brief notes are given for each of the above species (except those in Acanthathous) and for Harminius (Diacanthous) triundulatus (Mannerheim), H. (D.) undulatus (DeGeer), and Hemicrepidius pallidipennis (Mannerheim). Renter’s two subgenera of Harminius: Diacanthous and Megathous are recognized. A key to the genera associated with Athous and to the subgenera of Harminius is provided.

A new name in New World Cynanchum (Apocynaceae, Asclepiadoideae)

Neodiversity ◽  
2009 ◽  
Vol 4 (1) ◽  
pp. 7-8
Author(s):  
A. Rapini
Keyword(s):  
New World ◽  
New Name

The brachiopod Ptychopleurella lapworthi (Davidson) from the Ordovician of Girvan, S.W. Scotland

1986 ◽  
Vol 60 (4) ◽  
pp. 845-850 ◽  
Author(s):  
D. A. T. Harper
Keyword(s):  
North America ◽  
Sedimentary Facies ◽  
Upper Ordovician ◽  
Middle Ordovician ◽  
Identity Recognition ◽  
Early Ordovician ◽  
Iapetus Ocean ◽  
Northwestern Margin

The small, distinctive, glyptorthinine brachiopod Ptychopleurella Schuchert and Cooper is widely distributed in rocks of early Ordovician to late Silurian age. Several species are known from the Barr and Ardmillan successions (middle-upper Ordovician) of the Girvan district, S.W. Scotland, one of which, ‘Orthis Lapworthi’ Davidson, has not been described in modern terms as there has been some confusion concerning its true identity. Recognition of this species of Ptychopleurella permits comparison with congeners elsewhere, strengthens the correlation of this part of the Girvan Succession with the middle Ordovician of North America, and provides a more complete record of this genus in the slope sedimentary facies of the northwestern margin of the Iapetus Ocean.

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