Anticosti Island, Ellis Bay Formation Member 1 Conodonts (Ordovician of Canada)

Where: Québec, Canada (49.5° N, 63.0° W: paleocoordinates 23.2° S, 38.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Paraorthograptus pacificus graptolite zone, Grindstone Member (Vaureal Formation), Richmondian (449.5 - 443.7 Ma)

• Graptolite zone given, as these are conodonts! (Not that you find them together that often...). Member 1 = Grindstone.

• member-level stratigraphic resolution

Environment/lithology: marine; calcareous shale and limestone

• Shale, calcareous with limestone interbeds, and limestone with shale partings, some with ripple marks.

Size class: microfossils

Collection methods: chemical,

Primary reference: A. D. McCracken and C. R. Barnes. 1981. Conodont biostratigraphy across the Ordovician-Silurian boundary, Ellis Bay Formation, Anticosti Island, Québec. In P. J. Lespérance (ed.), Field meeting, Anticosti-Gaspé, Québec, 1981: IUGS Subcommssion on Silurian Stratigraphy, Ordovician-Silurian Boundary Working Group, Stratigraphy and Paleontology 2:61-69 [S. Holland/T. Hanson/S. Bruning]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 24569: authorized by Steven Holland, entered by Tori Hanson on 10.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Conodonts only. This should be broken down into localities (PJW).
Ptiloncodus
  -
Ptiloncodus harrisi
Ptiloncodus harrisi s f.
Conodonta
 Panderodontida - Panderodontidae
Panderodus spp. Ethington 1959 conodont
Panderodus n. sp A s. f., Panderodus n. sp. B s. f.
Panderodus panderi Stauffer 1940 conodont
Panderodus feulneri Glenister 1957 conodont
? Belodina sp. Ethington 1959 conodont
Belodina? n. sp. A s. f.
Belodina compressa Branson and Mehl 1933 conodont
Plegagnathus dartoni Stone and Furnish 1959 conodont
Plegagnathus dartoni s. f.
 Ozarkodinida -
 Proconodontida - Cordylodontidae
Cordylodus robustus conodont
"Cordylodus" robustus s. f.
 Belodellida - Belodellidae
Walliserodus cf. curvatus Branson and Branson 1947 conodont
 Prioniodontida -
Oulodus ulrichi conodont
Aphelognathus pyramidalis Branson et al. 1951 conodont
 Prioniodontida - Balognathidae
Amorphognathus cf. ordovicicus Bergström and Bergström 1996 conodont
 Prioniodontida -
Pseudooneotodus beckmanni Bischoff and Sannemann 1958 conodont
Pseudooneotodus mitratus Moskalenko 1973 conodont
 Prioniodontida - Rhipidognathidae
Rhipidognathus symmetricus Branson et al. 1951 conodont
 Protopanderodontida - Drepanoistodontidae
Drepanoistodus suberectus Branson and Mehl 1933 conodont
 Protopanderodontida - Protopanderodontidae