Kennecott Point, Graham Island, Queen Charlotte Islands, Section B 12 (Jurassic of Canada)

Where: British Columbia, Canada (53.9° N, 133.2° W: paleocoordinates 0.8° S, 128.3° W)

• coordinate stated in text

When: Coronoides ammonoid zone, Sandilands Formation, Liasicus (201.3 - 196.5 Ma)

Environment/lithology: basinal (); lithified, fine-grained, black, gray, blue siltstone and lithified, lenticular, fine-grained, medium, tuffaceous sandstone

• It is typically composed of thinly bedded dark shale and dark grey or blue siltstone. Fine to medium grained sandstone, tuffaceous beds and limestone beds, lenses and concretions are common.

Size class: macrofossils

Preservation: mold/impression

Primary reference: L. M. Longridge, J. Pálfy, P. L. Smith and H. W. Tipper. 2008. Middle and late Hettangian (Early Jurassic) ammonites from the Queen Charlotte Islands, British Columbia, Canada. Revue de Paleobiologie, Geneve 27(1):191-248 [J. Pálfy/M. Bosnakoff]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 84964: authorized by József Pálfy, entered by Mariann Bosnakoff on 19.11.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Psiloceratidae
Franziceras cf. coronoides, Franziceras kennecottense, Discamphiceras silberlingi, Discamphiceras aff. pleuronotum
Franziceras cf. coronoides Guex 1980 ammonite
Franziceras kennecottense Longridge et al. 2008 ammonite
Discamphiceras silberlingi Guex 1980 ammonite
Discamphiceras aff. pleuronotum Canavari 1882 ammonite
 Ammonitida - Schlotheimiidae
Curviceras haidae, "Storthoceras sp." = Macrogrammites, Storthoceras aff. garfieldense, Schlotheimia sp., Saxoceras aff. portlocki
Curviceras haidae Longridge et al. 2008 ammonite
"Storthoceras sp." = Macrogrammites Buckman 1928 ammonite
Storthoceras aff. garfieldense Taylor 1998 ammonite
Schlotheimia sp. Bayle 1878 ammonite
Saxoceras aff. portlocki Wright 1881 ammonite
 Ammonitida - Arietitidae
Alsatites cf. liasicus, Alsatites ex gr. proaries
Alsatites cf. liasicus d'Orbigny 1844 ammonite
Alsatites ex gr. proaries Neumayr 1879 ammonite
 Ammonitida - Lytoceratidae
Pleuroacanthites charlottensis, Pleuroacanthites cf. biformis, Eolytoceras cf. praecursor
Pleuroacanthites charlottensis Longridge et al. 2008 ammonite
Pleuroacanthites cf. biformis Sowerby 1831 ammonite
Eolytoceras cf. praecursor Guex 1995 ammonite
 Phylloceratida - Phylloceratidae
"Nevadaphyllites psilomorphus" = Phylloceras psilomorphum
"Nevadaphyllites psilomorphus" = Phylloceras psilomorphum Neumayr 1879 ammonite
 Phylloceratida - Juraphyllitidae
Togaticeras togatum
Togaticeras togatum Neumayr 1879 ammonite