New Lower Jurassic ammonite faunas from the Fernie Formation, southern Canadian Rocky Mountains

1987 ◽  
Vol 24 (8) ◽  
pp. 1688-1704 ◽  
Author(s):  
Russell L. Hall
Keyword(s):  
British Columbia ◽  
North American ◽  
Rocky Mountains ◽  
Red Deer ◽  
First Record ◽  
Lower Jurassic ◽  
Canadian Rocky Mountains ◽  
Poker Chip

New ammonite faunas are described from sections along Bighorn and Scalp creeks in central-western Alberta where Lower Jurassic parts of the Fernie Formation are exposed. The first record of the upper Sinemurian Obtusum Zone from the Fernie is based on the occurrence of Asteroceras cf. stellare and Epophioceras cf. breoni in the basal pebbly coquina on Bighorn Creek. The overlying Red Deer Member has yielded Amaltheus cf. stokesi, representing the upper Pliensbachian Margaritatus Zone; in immediately superjacent strata the first North American examples of ?Amauroceras occur together with Protogrammoceras and ?Aveyroniceras. In the basal parts of the overlying Poker Chip Shale a fauna including Harpoceras cf. falciferum, Harpoceratoides, Polyplectus cf. subplanatus, Hildaites cf. serpentiniformis, and Dactylioceras cf. athleticum is correlated with the lower Toarcian Falciferum Zone.The upper parts of the Poker Chip Shale on Fording River in southeastern British Columbia contain a fauna representing some part of the upper Toarcian, but owing to poor preservation, generic identifications are only tentatively made.

New biostratigraphic data from the Lower Jurassic Fernie Formation in the subsurface of west-central Alberta and their stratigraphic implications

2003 ◽  
Vol 40 (1) ◽  
pp. 45-63 ◽  
Author(s):  
Michèle Asgar-Deen ◽  
Russell Hall ◽  
Jim Craig ◽  
Cynthia Riediger
Keyword(s):  
British Columbia ◽  
Red Deer ◽  
Gamma Ray ◽  
Lower Jurassic ◽  
The West ◽  
Fine Grained ◽  
Poker Chip ◽  
West Central ◽  
Gamma Ray Log

Geophysical gamma-ray log responses and examination of cores from select wells of the lower Fernie Formation document important correlations of several new lithologic units recognized in the subsurface of west-central Alberta. Ammonite faunas and coccolith floras recovered from these cores are illustrated and provide new ages for several of these units, requiring a revision of their correlation with surface stratigraphy of the west-central Alberta foothills. The organic-rich, fine-grained west-central Alberta subsurface lower Fernie Formation sediments are Hettangian to late Toarcian in age and are, therefore, correlative with outcrops of unnamed basal Fernie strata of northeastern British Columbia, Nordegg Member cherty limestones of the Cadomin and Nordegg areas, and with the Red Deer Member and Poker Chip Shale at outcrop in west-central Alberta.

Nucleation during primary succession in the Canadian Rockies

1993 ◽  
Vol 71 (8) ◽  
pp. 1093-1096 ◽  
Author(s):  
D. J. Blundon ◽  
D. A. MacIsaac ◽  
M. R. T. Dale
Keyword(s):  
British Columbia ◽  
Nitrogen Fixation ◽  
Key Words ◽  
Rocky Mountains ◽  
Primary Succession ◽  
The Other ◽  
Pioneer Species ◽  
Canadian Rocky Mountains ◽  
Successional Species ◽  
Key Words Colonization

A study of nucleation during primary succession was carried out on age sequences of communities at two sites in the Canadian Rocky Mountains: one at the Mount Robson moraines, British Columbia, the other at Southeast Lyell Glacier, Alberta. The study concentrated on the associations of species with the nitrogen-fixing plants Hedysarum boreale var. mackenzii at Mount Robson moraines and Dryas drummondii at Southeast Lyell Glacier because those plants might serve as nuclei for colonization by other species, thus facilitating succession. The data show that recruitment of later successional species is greater in patches of the two pioneer species, but the fact that recruitment takes place away from the plants also suggests that although there is nucleation, it is not necessary for succession at these sites. Key words: colonization, nitrogen fixation, nucleation, succession.

First record of the Paleozoic land snail family Anthracopupidae in the Lower Jurassic of China and the origin of Stylommatophora

2019 ◽  
Vol 94 (2) ◽  
pp. 266-272 ◽  
Author(s):  
Adrienne Jochum ◽  
Tingting Yu ◽  
Thomas A. Neubauer
Keyword(s):  
North American ◽  
First Record ◽  
Land Snail ◽  
Lower Jurassic ◽  
Ct Imaging ◽  
Late Carboniferous ◽  
Current Opinion ◽  
Computed Tomographic ◽  
Snail Family

AbstractComputed tomographic (CT) imaging allows new accessibility to shells of gastropod fossil taxa and their extant relatives, providing new data for interpreting former systematic assignments. The highly questionable ellobiid assignment of the nonmarine gastropod genus Protocarychium Pan, 1982 from the Lower Jurassic of Hunan, China, is reevaluated using CT imaging to assess internal aspects of the shell. By comparing these new data to those of stylommatophoran, ellobiid, and caenogastropod clades in the literature, this work reveals that Protocarychium bears no affinity to the Carychiidae, which are otherwise known only from the Cenozoic, but rather to the Paleozoic land snail family Anthracopupidae Wenz, 1938. This finding constitutes the first Asian appearance of anthracopupid snails beyond their known North American and European range. Contrary to the current opinion, we suggest the Anthracopupidae to be a basal stylommatophoran clade, which places the origin of Stylommatophora at least in the late Carboniferous.

Tectonic implications of 40Ar/39Ar muscovite dates from the Mt. Haley stock and Lussier River stock, near Fort Steele, British Columbia

2006 ◽  
Vol 43 (11) ◽  
pp. 1673-1684 ◽  
Author(s):  
Kyle P Larson ◽  
Raymond A Price ◽  
Douglas A Archibald
Keyword(s):  
British Columbia ◽  
Single Crystal ◽  
Rocky Mountains ◽  
Potassium Feldspar ◽  
Canadian Rocky Mountains ◽  
The West ◽  
Lower Paleozoic ◽  
Tectonic Implications ◽  
West Limb ◽  
Step Heating

The Mt. Haley and Lussier River stocks are located northeast of Cranbrook, B.C. near the south end of the Western Main Ranges of the Southern Canadian Rocky Mountains. Both are multiphase, potassium-feldspar porphyritic monzonite plutons that intrude lower Paleozoic miogeoclinal strata. They crosscut and thermally overprint the Lussier River fault and the thrust and fold structures in the east flank of the Purcell anticlinorium and the west limb of the Porcupine Creek anticlinorial fan structure. Muscovite from the Mt. Haley stock yielded a 40Ar/39Ar plateau age of 108.2 ± 0.7 Ma (2σ), and a single-crystal, step-heating analysis of muscovite from a skarn in the metamorphic aureole adjacent to the Lussier River stock gave a plateau date of 108.7 ± 0.6 Ma (2σ). These dates constrain the timing of thrusting and folding in this portion of the western Rocky Mountains and of the displacement along the Lussier River – St. Mary fault to pre-middle Albian.

scholarly journals VII.—The Canadian Rockies. Part I : On a Collection of Middle Cambrian Fossils obtained by Edward Whymper, Esq., F.R.G.S., from Mount Stephen, British Columbia

1902 ◽  
Vol 9 (11) ◽  
pp. 502-505 ◽  
Author(s):  
Henry Woodward
Keyword(s):  
British Columbia ◽  
Rocky Mountains ◽  
Canadian Rocky Mountains ◽  
Canadian Rockies ◽  
Middle Cambrian ◽  
Pacific Railroad ◽  
Northern Side

In the Summer of 1901 my friend Mr. Edward Whymper, the well-known traveller, mountain explorer, and writer, paid a visit to the watershed of the Canadian Rocky Mountains, and during a stay at Field, the highest pass reached on the Canadian and Pacific Railroad, he examined the slopes of Mount Stephen, and at a height of 6,000 feet on its northern side found numerous Trilobites, and brought home a considerable collection.

The blind aquatic isopod Salmasellus from a cave spring of the Rocky Mountains' eastern slopes, with comments on a Wisconsin refugium

1976 ◽  
Vol 54 (11) ◽  
pp. 2028-2032 ◽  
Author(s):  
Hugh F. Clifford ◽  
Glen Bergstrom
Keyword(s):  
Dissolved Oxygen ◽  
North American ◽  
Rocky Mountains ◽  
Range Extension ◽  
Snow Melt ◽  
Canadian Rocky Mountains ◽  
Eastern Side ◽  
Distribution Record

The blind hypogean asellid Salmasellus steganothrix Bowman (Crustacea: Isopoda) is reported from a cave spring located on the eastern slopes of the Rocky Mountains of Alberta, Canada. This is the only known aquatic isopod from Alberta and represents an extraordinary range extension for North American hypogean isopods. Water temperatures of the spring are almost constant, near 7 °C, for about 9 months of the year, but fluctuate because of snow melt in May, June, and July. Dissolved oxygen is often less than 1 mg/1 during the winter, and the isopod has not been collected from December through May, even though the spring is sampled at about monthly intervals. The distribution record is considered to be evidence supporting the existence of unglaciated low-elevation refugia on the eastern side of the Canadian Rocky Mountains during Wisconsin time.

Stratigraphic position of Carboniferous Macgowanella and Sinopora? pascuali, Canadian Cordillera

1984 ◽  
Vol 21 (4) ◽  
pp. 500-501 ◽  
Author(s):  
Bernard L. Mamet ◽  
Samuel J. Nelson
Keyword(s):  
British Columbia ◽  
Rocky Mountains ◽  
Canadian Cordillera ◽  
Canadian Rocky Mountains ◽  
Lower Upper ◽  
Head Formation ◽  
Stratigraphic Position ◽  
Age Determinations

Microfossils associated with Carboniferous Macgowanella and Sinopora? pascuali allow more precise age determinations than previously determined. Macgowanella, a possible bryozoan holdfast, is represented by two species, M. tenuiradiata (Warren) and M. stellata (Warren), both from the Viséan (Upper Mississippian, Meramecian) Mount Head Formation of the southern Canadian Rocky Mountains. Microfossils indicate a correlation with upper Viséan Zone 14, equivalent to the lower upper Meramecian Marston/lower Opal members of the Mount Head Formation.The syringoporid coral Sinopora? pascuali is from near Kamloops, British Columbia. Microfossils support the Early Pennsylvanian date earlier assigned, correlating it with Zones 20 or 21, Bashkirian = Morrowan to basal Atokan.

Teudopsis cadominensis, a new teuthid squid from the Toarcian (Lower Jurassic) of Alberta

1989 ◽  
Vol 63 (3) ◽  
pp. 324-327 ◽  
Author(s):  
Russell L. Hall ◽  
Andrew G. Neuman
Keyword(s):  
New Species ◽  
North America ◽  
First Record ◽  
Lower Jurassic ◽  
Poker Chip ◽  
The Family ◽  
A New Species

A new species of teuthid squid, Teudopsis cadominensis, is described from the Toarcian (Lower Jurassic) Poker Chip Shale of the Fernie Formation in central-western Alberta. Fossil squids are rare in the Mesozoic of North America; this species is the first record of the family Palaeololiginidae in North America and the first member of the suborder Mesoteuthina in the Jurassic of North America.

Seirocrinus subangularis (Miller, 1821), a Pliensbachian (Lower Jurassic) crinoid from the Fernie Formation, Alberta, Canada

1991 ◽  
Vol 65 (2) ◽  
pp. 300-307 ◽  
Author(s):  
Russell L. Hall
Keyword(s):  
Rocky Mountains ◽  
Red Deer ◽  
Lower Surface ◽  
Geographic Range ◽  
Lower Jurassic ◽  
Early Jurassic ◽  
Western Canada

An almost complete specimen of the pentacrinid Seirocrinus subangularis (Miller, 1821) is described from the Red Deer Member of the Fernie Formation in the Rocky Mountains of central-western Alberta. Associated ammonites representing the Stokesi Subzone of the Margaritatus Zone indicate a Late Pliensbachian (Early Jurassic) age for the specimen. Taphonomic features suggest preservation in soft muds on a quiet, oxygen-deficient seafloor, so that the lower surface is preserved intact while ossicles on the exposed upper surface became disarticulated and were slightly disturbed. This occurrence in western Canada represents a major extension of the geographic range of the species.

The taxonomic status of Timmia sibirica

1981 ◽  
Vol 59 (5) ◽  
pp. 563-571 ◽  
Author(s):  
Diana G. Horton
Keyword(s):  
North American ◽  
Rocky Mountains ◽  
Taxonomic Status ◽  
Distinct Species ◽  
Critical Study ◽  
Canadian Rocky Mountains ◽  
The North ◽  
Mixed Populations ◽  
Important Character

A critical study of the differentiating features of the North American populations of Timmia sibirica Lindb. et Arnell and T. norvegica Zett. reveals that populations with structure intermediate between these two taxa occur. Although from widespread localities, the intermediate specimens seem limited in number and T. sibirica and T. norvegica quite commnonly occur in mixed populations with no evidence of any intergradation. Therefore, it is concluded that the two taxa ought to be regarded as distinct species. The taxonomically important character-states of upper leaf cells and costa of T. sibirica. T. norvegica, and of the intermediate populations are illustrated with scanning elecron micrographs. The habitat of T. sibirica, like that of T. norvegica, is invariably on strongly calcareous substrates adjacent to waterfalls, along streams, or in low-lying tundra. The North American distribution of T. sibirica is mapped, including previously unreported localities as far south as 51° N in the Canadian Rocky Mountains.

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