Mingan Islands, Champlain Valley, Valcour Fm. (Beech Mbr.) (Ordovician of Canada)

Where: Quebec, Canada (50.2° N, 63.5° W)

• Paleocoordinates: 6.1° S, 90.5° W (Wright 2013)

• coordinate based on political unit

When: ? Beech Member (Valcour Formation), Chazyan (470.0 - 457.3 Ma)

• "early M. Ord. (Chazyan) (Champlainian, Montyan Stage)"

• member-level stratigraphic resolution

Environment/lithology: marine; argillaceous limestone and shale

• "thin bedded argillaceous ls with shale partings and some dolomite. overlies Crown Pt. Fm., underlies Pamelia Fm."

Size class: macrofossils

Primary reference: H. J. Hofmann. 1963. Ordovician Chazy Group in southern Quebec. AAPG Bulletin 47:270-301 [M. Uhen/J. Ju/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 435: authorized by Jack Sepkoski, entered by Mike Sommers on 08.12.1998

Creative Commons license: CC0 (CC0)

Taxonomic list

• "Hofmann, 1963"
Show authors, comments, and common names
 Parablastoidea - Blastocystidae
Blastoidocrinus sp.
Blastoidocrinus sp. Billings 1859
Paracrinoidea
 Platycystitida - Malocystitidae
Malocystites sp.
Malocystites sp. Billings 1858
 Platycystitida - Platycystitidae
Canadocystis sp.
Canadocystis sp. Jaekel 1900
Eocrinoidea
  - Palaeocystitidae
Palaeocystites sp.
Bivalvia
 Modiomorphida - Modiomorphidae
Modiolopsis sp.
Modiolopsis sp. Hall 1847 clam
 Myalinida - Ambonychiidae
Cleionychia sp.
Cleionychia sp. Ulrich 1892 clam
originally entered as "Clionychia sp."
Gastropoda
 Euomphalina - Macluritidae
Maclurites sp.
Maclurites sp. Le Sueur 1818 snail
 Euomphalina - Raphistomatidae
Raphistoma sp.
Raphistoma sp. Hall 1847 snail
 Bellerophontida - Bucaniidae
Bucania sp.
Bucania sp. Hall 1847 snail
Strophomenata
 Billingsellida - Clitambonitidae
? Atelelasma sp.
? Atelelasma sp. Cooper 1956
originally entered as "? Atelelasma sp."
Rhynchonellata
 Orthida - Plectorthidae
Mimella sp.
Mimella sp. Cooper 1930
2 species
 Orthida - Hesperorthidae
Ptychopleurella sp., Hesperorthis sp.
Ptychopleurella sp. Schuchert and Cooper 1931
Hesperorthis sp. Schuchert and Cooper 1931
 Orthida - Plaesiomyidae
Multicostella sp., Valcourea sp.
Valcourea sp. Raymond 1911
 Pentamerida - Camerellidae
Camerella sp.
Camerella sp. Billings 1859
 Rhynchonellida - Trigonirhynchiidae
Rostricellula sp.
Rostricellula sp. Ulrich and Cooper 1942
2 species
Trilobita
 Phacopida - Pterygometopidae
Calliops sp.
Calliops sp. Delo 1935 trilobite
 Phacopida - Cheiruridae
Sphaerexochus sp., Nieszkowskia sp., Kawina sp.
Sphaerexochus sp. Beyrich 1845 trilobite
Nieszkowskia sp. Schmidt 1881 trilobite
Kawina sp. Barton 1916 trilobite
 Phacopida - Pliomeridae
Pliomerops sp.
Pliomerops sp. Raymond 1905 trilobite
 Asaphida - Asaphidae
"Isotelus sp." = Isotelus, "Homotelus sp." = Isotelus, Basilicus sp.
"Isotelus sp." = Isotelus Dekay 1824 trilobite
2 species
"Homotelus sp." = Isotelus Dekay 1824 trilobite
Basilicus sp. Salter 1849 trilobite
 Ptychopariida - Raymondinidae
Glaphurina sp.
Glaphurina sp. Ulrich 1930 trilobite
 Corynexochida - Illaenidae
Bumastus sp.
Bumastus sp. Murchison 1839 trilobite
Ostracoda
 Palaeocopida - Eurychilinidae
Eurychilina sp.
Eurychilina sp. Ulrich 1889 ostracod
Scyphozoa
 Conulariida - Conulariidae
Conularia sp.
Conularia sp. Miller 1820 jellyfish
2 species
Anthozoa
 Sarcinulida - Billingsariidae
Billingsaria sp.
Billingsaria sp. Okulitch 1936 tabulate coral
 Lichenariida - Lyoporidae
Eofletcheria sp.
Eofletcheria sp. Bassler 1950 tabulate coral
originally entered as "Eofletcharia sp."