Mingan Islands, Champlain Valley, Day Point Fm. (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

• basin-level geographic resolution

When: Day Point Formation, Chazyan (470.0 - 457.3 Ma)

• "early M.Ord., (Chazyan) (Champlanian, Montyan stage). not Ste. Therese Sltst."

Environment/lithology: sand shoal; limestone

• "locally highly x-bedded, sandy, coarse grained bioclastic ls, includes reefs, overlies laminated dolomitic sltst. w/lingulids"

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 305: authorized by Jack Sepkoski, entered by Mike Sommers on 20.11.1998

Creative Commons license: CC0 (CC0)

Taxonomic list

• "H.J.Hofmann 1963. Ord. Chazy Group in southern Quebec. AAPG Bull. 47:270-301."
Show authors, comments, and common names
Trilobita
 Harpetida - Harpetidae
Eoharpes sp.
Eoharpes sp. Raymond 1905 trilobite
 Corynexochida - Illaenidae
Bumastus sp.
Bumastus sp. Murchison 1839 trilobite
2 species
 Trinucleida - Raphiophoridae
Lonchodomas sp.
Lonchodomas sp. Angelin 1854 trilobite
 Asaphida - Asaphidae
"Isotelus sp." = Isotelus, "Homotelus sp." = Isotelus, Vogdesia sp., Basilicus sp.
"Isotelus sp." = Isotelus Dekay 1824 trilobite
2 species - originally entered as "Isotellus sp."
"Homotelus sp." = Isotelus Dekay 1824 trilobite
Vogdesia sp. Raymond 1910 trilobite
Basilicus sp. Salter 1849 trilobite
 Phacopida - Pterygometopidae
Calliops sp.
Calliops sp. Delo 1935 trilobite
 Phacopida - Pliomeridae
Pliomerops sp.
Pliomerops sp. Raymond 1905 trilobite
 Phacopida - Cheiruridae
Kawina sp., Sphaerexochus sp.
Kawina sp. Barton 1916 trilobite
Sphaerexochus sp. Beyrich 1845 trilobite
Ostracoda
 Palaeocopida - Eurychilinidae
Eurychilina sp.
Eurychilina sp. Ulrich 1889 ostracod
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
Stenolaemata
  - Phylloporinidae
Phylloporina sp.
Phylloporina sp. Foerste 1887
originally entered as "Phylloprina sp."
Strophomenata
 Strophomenida - Furcitellidae
Dactylogonia sp.
Dactylogonia sp. Ulrich and Cooper 1942
Rhynchonellata
 Rhynchonellida - Sphenotretidae
Sphenotreta sp.
 Rhynchonellida - Trigonirhynchiidae
Rostricellula sp.
Rostricellula sp. Ulrich and Cooper 1942
 Orthida - Plectorthidae
Mimella sp.
Mimella sp. Cooper 1930
 Orthida - Plaesiomyidae
Multicostella sp., Valcourea sp.
Valcourea sp. Raymond 1911
 Orthida - Orthidae
Orthambonites sp.
Orthambonites sp. Pander 1830
 Orthida - Hesperorthidae
Hesperorthis sp., Ptychopleurella sp.
Hesperorthis sp. Schuchert and Cooper 1931
Ptychopleurella sp. Schuchert and Cooper 1931
 Pentamerida - Camerellidae
Camerella sp.
Camerella sp. Billings 1859
 Parablastoidea - Blastocystidae
Blastoidocrinus sp.
Blastoidocrinus sp. Billings 1859
Eocrinoidea
  - Palaeocystitidae
Palaeocystites sp.
  -
Bolboporites sp.