CONFIRMATION OF ULULODES QUADRIMACULATA IN CANADA (NEUROPTERA: ASCALAPHIDAE)

1980 ◽  
Vol 112 (6) ◽  
pp. 637-638 ◽  
Author(s):  
J. A. Garland ◽  
B. D. Marshall
Keyword(s):  
Essex County ◽  
Southern Ontario ◽  
Georgian Bay ◽  
Specimen Material

Ascalaphidae occur in Canada. Here, we document the presence of Ululodes quadrimaculata (Say) in southern Ontario, which was suspected by Kevan (1979).SPECIMEN MATERIAL. Ontario: ESSEX COUNTY: Harrow, ♀, VIII.1974 (W. Elliott; UG). LAMBTON COUNTY: Pinery Prov. Pk., ♂, 4.VII. 1977 (B. Marshall & W. Maddison; #770112b, ROM). MUSKOKA DISTRICT: Georgian Bay, Island #421, ♀, 5.VII. 1963 (J. P. Bogart; UG); Gravenhurst, ♀, 20.VIII. 1975 (D. J. Aspinall; UG); Muskoka, ♀, VIII.1957 (D. Barr; ROM).

ADDITIONAL NOTES ON COLEOPTERA TAKEN IN ESSEX COUNTY AND SOUTHERN ONTARIO, CANADA.

1947 ◽  
Vol 79 (7-8) ◽  
pp. 148-149 ◽  
Author(s):  
S. D. Hicks
Keyword(s):  
Essex County ◽  
Southern Ontario ◽  
The Third

This list follows closely on the third of three previously published articles in the Canadian Entomologist. Mr. C. A. Frost of Framingham, Massachusetts, has checked and supplied me with identifications of all but two of the specimens. His generous interest in determining some of the beetles for which names have been difficult to obtain made this paper possible.

The cytogeography of Aster lanceolatus. III. Cytoecology in southern Ontario

1983 ◽  
Vol 61 (7) ◽  
pp. 1879-1886 ◽  
Author(s):  
J. G. Chmielewski ◽  
J. C. Semple
Keyword(s):  
Chromosome Number ◽  
Water Content ◽  
Community Type ◽  
Essex County ◽  
Southern Ontario ◽  
Historical Factors ◽  
Kent County ◽  
Type Water

Aster lanceolatus Willd. is represented by five polyploid levels in southern Ontario: tetraploid (2n = 32), pentaploid (2n = 40), hexaploid(2n = 48), heptaploid (2n = 56), andoctoploid(2n = 64). Tetraploids were absent from the Niagara Peninsula in the southeast and Essex County, Kent County, Lambton County, and Elgin County in the southwest, whereas the hexaploids were ubiquitous. Correlations were found between chromosome number and habitat (community type), water content of the soil, physiographic region, and grouped physiographic region. These correlations notwithstanding, the distribution of the two predominant cytotypes in southern Ontario may also be related to historical factors.

ADDITIONAL NOTES ON COLEOPTERA TAKEN IN ESSEX COUNTY AND SOUTHERN ONTARIO

1947 ◽  
Vol 79 (6) ◽  
pp. 117-119 ◽  
Author(s):  
S. D. Hicks
Keyword(s):  
Essex County ◽  
Southern Ontario

The following list of specimens is supplementary to two previously published articles (1944, Canad. Ent. 76:163 and 1945, Canad. Ent. 77:214) on Essex County material. Appended to the list are miscellaneous records of 17 species captured in Ontario locations other than Essex County. These have been added to this paper since they are thought to be of noteworthy interest. The species in each part follow as closely as possible C.W. Leng's Catalogue of the Coleoptera of America north of Mexico.

Revision of the position of the Ordovician–Silurian boundary in southern Ontario: regional chronostratigraphic implications of δ13C chemostratigraphy of the Manitoulin Formation and associated strata

2011 ◽  
Vol 48 (11) ◽  
pp. 1447-1470 ◽  
Author(s):  
Stig M. Bergström ◽  
Mark Kleffner ◽  
Birger Schmitz ◽  
Bradley D. Cramer
Keyword(s):  
Middle Part ◽  
Adjacent Region ◽  
Geologic History ◽  
Southern Ontario ◽  
Georgian Bay ◽  
The North ◽  
Head Formation ◽  
Depositional Patterns ◽  
Baseline Values ◽  
Anticosti Island

δ13C values of 142 samples from the Manitoulin Formation and subjacent strata collected from 14 exposures and two drill-cores on Manitoulin Island, Bruce Peninsula, and the region south of Georgian Bay suggest that the Manitoulin Formation is latest Ordovician (Hirnantian) rather than earliest Silurian in age. A δ13C excursion identified as the Hirnantian isotope carbon excursion (HICE), which has a magnitude of nearly 2.5‰ above baseline values, is present in an interval from the upper Queenston Formation to the lower to middle part of the Manitoulin Formation in most of Bruce Peninsula and in the area south of Georgian Bay, whereas on Manitoulin Island the HICE appears to be absent. This indicates that a significant part of the Manitoulin Formation is older on the Bruce Peninsula and in its adjacent region than on Manitoulin Island. The chemostratigraphically based conclusions are consistent with biostratigraphic data from conodonts and brachiopods. The Hirnantian δ13C curve from Anticosti Island, Quebec is closely similar to those of southern Ontario. Traditionally, the Ordovician–Silurian boundary has been placed at the base of the Manitoulin Formation, but the new results suggest that it is more likely to be at, or near, the base of the overlying Cabot Head Formation. These new results have major implications for the interpretation of the geologic history and marine depositional patterns of the latest Ordovician of a large part of the North American Midcontinent.

A new scleritomous metazoan from the Late Ordovician Georgian Bay Formation, southern Ontario

1998 ◽  
Vol 35 (7) ◽  
pp. 827-831 ◽  
Author(s):  
David M Rudkin
Keyword(s):  
New Genus ◽  
Late Ordovician ◽  
New Genus And Species ◽  
Southern Ontario ◽  
Georgian Bay ◽  
Early Ordovician ◽  
Primary Composition ◽  
Level Group

A new genus and species of articulated scleritomous metazoan, Curviconophorus andersoni, is described on the basis of a unique specimen from the Late Ordovician Georgian Bay Formation of southern Ontario. The affinities of the organism remain obscure, although the overall morphology of component sclerites suggests a possible relationship with the Agmata, an extinct phylum-level group so far known with certainty only from the Cambrian. Curved, conical elements of the scleritome are preserved as internal moulds and yield no details of ultrastructure or primary composition, precluding detailed comparisons with the aggultinated, internally laminated sclerites of agmatans. Curviconophorus gen.nov. has a scleritome architecture similar to that of the Early Ordovician putative agmatan Dimorphoconus granulatus, though it has fewer elements that are strictly monomorphic.

Lithofacies and age variation in the Fossil Hill Formation (Lower Silurian), southern Georgian Bay region, Ontario

1999 ◽  
Vol 36 (10) ◽  
pp. 1743-1762
Author(s):  
Christopher A Stott ◽  
Peter H von Bitter
Keyword(s):  
Apparent Absence ◽  
Southern Ontario ◽  
Georgian Bay ◽  
Tectonic Model ◽  
Lower Silurian ◽  
Bedded Chert ◽  
Age Variation

The Fossil Hill Formation in the southern Georgian Bay region demonstrates considerable faunal and lithological variation. Well-defined distinctions exist between bedded chert-bearing, sparsely fossiliferous, argillaceous dolostones of the formation in the eastern Beaver Valley and relatively pure, fossiliferous, non-chert-bearing dolostones observed on the nearby southern Bruce Peninsula and Cape Rich Steps. Biostratigraphic studies and lithostratigraphic tracing through the intervening Bighead Valley suggest that the Fossil Hill Formation of the eastern Beaver Valley is correlative with the typical lower Pentamerus bank and the overlying coral-stromatoporoid biostrome of late Aeronian (Llandovery C1-C2) age observed on the southern Bruce Peninsula and Cape Rich Steps. Regionally, the Fossil Hill Formation exhibits significant age variation; biostratigraphically diagnostic brachiopods (Pentamerus oblongus, Pentameroides subrectus, and Plicostricklandia castellana) from the formation near Walters Falls indicate Telychian (Llandovery C4-C6) to early Wenlock age for part of the unit there. The highly localized preservation of Fossil Hill Formation strata of Telychian age in the Walters Falls area, along with contemporaneous facies changes noted in strata of Aeronian age and the apparent absence of Fossil Hill Formation strata at other localities, suggests that the paleotopography of the southern Georgian Bay region varied markedly during the mid to late Llandovery. A tectonic model that relates epeirogenic uplift associated with the Algonquin Arch in southern Ontario to the vertical rotation of fault-bounded lithospheric blocks, and additions to the model suggested herein, may explain the observed variations.

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