GSC 26406, Lyall River, Grinnell Peninsula, Devon Island (Permian of Canada)

Where: Nunavut, Canada (77.0° N, 95.4° W: paleocoordinates 37.2° N, 0.2° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Assistance Formation, Roadian (272.3 - 268.8 Ma)

• Collection between 45 and 57 m above base of formation

• group of beds-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified, glauconitic, gray sandstone and lithified, bioturbated, concretionary, hematitic, silty limestone

• 200 ft. of dark grey recessive sandstone and minor resistant silty limestone bands that are iron rich, concretionary, and contain and abundance of plant and animal debris. Unconsolidated glauconitic sandy clay and sand, locally with siderite and sandstone concretions.

Size class: macrofossils

Preservation: replaced with other

Reposited in the GSC

Primary reference: P. Harker and R. Thorsteinsson. 1960. Permian rocks and faunas of Grinnell Peninsula, Arctic Archipelago. Geological Survey of Canada Memoir 309:1-89 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 11089: authorized by Arnold Miller, entered by Chad Ferguson on 13.07.2001, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

 Productida - Echinoconchidae
 Productida - Productidae
"Kochiproductus freboldi" = Kochiproductus porrectus, "Muirwoodia mammatus" = Yakovlevia mammata, "Thuleproductus arcticus" = Thamnosia arctica11
"Kochiproductus freboldi" = Kochiproductus porrectus Kutorga 1844
"Muirwoodia mammatus" = Yakovlevia mammata Keyserling 1846
"Thuleproductus arcticus" = Thamnosia arctica11 Whitfield 1908
 Productida - Monticuliferidae
"Cancrinella cf. germanicus" = Costatumulus germanicus
"Cancrinella cf. germanicus" = Costatumulus germanicus Frebold 1933
 Productida - Rugosochonetidae
"Chonetes capitolinus" = Svalbardia capitolina
"Chonetes capitolinus" = Svalbardia capitolina Toula 1875
 Orthotetida - Schuchertellidae
"Streptorhynchus triangularis" = Arctitreta triangularis, "Streptorhynchus kempei" = Arctitreta kempei
"Streptorhynchus triangularis" = Arctitreta triangularis Wiman 1914
"Streptorhynchus kempei" = Arctitreta kempei Andersson 1914
 Orthotetida - Derbyiidae
Derbyia cf. grandis Waagen 1884
 Athyridida - Athyrididae
 Terebratulida - Dielasmatidae
Dielasma cf. plica Kutorga 1842
 Spiriferida - Strophopleuridae
Pterospirifer cf. alatus von Schlotheim 1813
 Spiriferida - Trigonotretidae
"Gobbettifera angulata n. gen. n. sp." = Fasciculatia angulata5
"Gobbettifera angulata n. gen. n. sp." = Fasciculatia angulata5 Waterhouse 2004
 Spiriferida - Spiriferellidae
Spiriferella loveni13 Diener 1903
Timaniella harkeri12 Waterhouse 1971
 Spiriferida - Spiriferidae
"Spirifer osborni n. sp." = Kasakhstania osborni
"Spirifer osborni n. sp." = Kasakhstania osborni Harker 1960
 Spiriferida - Elythidae
"Neophricadothyris "sp. B"" = Phricodothyris2
"Neophricadothyris "sp. B"" = Phricodothyris2
 Rhynchonellida - Rhynchoporidae
Rhynchopora cf. nikitini Tschernyschew 1889
 Rhynchonellida - Tetracameridae
Septacamera opitula n. sp.3 Grant 1971
 Rhynchonellida - Stenoscismatidae
 Lingulida - Disciniidae
Orbiculoidea jangarensis4 Ustritsky 1960
 Lingulida - Lingulidae
Lingula freboldi2 Gobbett 1963
 Myalinida - Myalinidae
Myalinidae indet.7 Frech 1891 clam
 Pectinida - Aviculopectinidae
Aviculopecten sp.7 M'Coy 1851 scallop
 Pectinida - Deltopectinidae
Deltopecten sp.7, "Cyrtorostra arctica n. sp." = Cyrtorostra laticostata7
"Cyrtorostra arctica n. sp." = Cyrtorostra laticostata7 Nechaev 1894 scallop
 Pectinida - Limipectinidae
Acanthopecten sp.7 Girty 1903 scallop
 Ostreida - Bakevelliidae
Bakevellia sp.7 King 1848 oyster
 Cardiida - Kalenteridae
Permophorus sp.7 Chavan 1954 clam
Stutchburia sp.7 Etheridge 1900 clam
 Pholadomyida - Edmondiidae
Edmondia sp.7 de Koninck 1841 clam
 Trigoniida - Schizodidae
Schizodus sp.7 King 1844 clam
 Dentaliida - Prodentaliidae
Prodentalium belcheri n. sp.10 Nassichuk and Hodgkinson 1976 tusk shell
 Goniatitida - Paragastrioceratidae
"Pseudogastrioceras fortieri n. sp." = Daubichites fortieri
"Pseudogastrioceras fortieri n. sp." = Daubichites fortieri Harker 1960 ammonite
 Goniatitida - Spirolegoceratidae
Sverdrupites sp.8 Nassichuk 1970 ammonite
Sverdrupites harkeri n. sp.8 Ruzhentsev 1961 ammonite
 Goniatitida - Mongoloceratidae
Biarmiceras sp.6 Leonova et al. 2005 ammonite
Physonemus sp.9 Agassiz 1843 chimaera
 Conulariida - Conulariidae
Paraconularia arctica n. sp.1 Babcock 1988 jellyfish
Paraconularia margaritae n. sp.1 Babcock 1988 jellyfish