Hogs Back, Ottawa Valley, Aylmer Sandstone Fm. (Ordovician of Canada)

Where: Ontario, Canada (45.4° N, 75.7° W: paleocoordinates 26.6° S, 55.8° W)

• coordinate estimated from map

When: Aylmer Formation (Chazy Group), Chazyan (470.0 - 457.3 Ma)

Environment/lithology: marine; shale and sandstone

• "in soft clayey shales of Aylmer Fm.", in Raymond (1911)

•"Impure, shaly limestone, greenish in color, and very tough. Greenish shale without lime. Though, fairly pure buff limetone or dolomite.", in Raymond (1906)

Size classes: macrofossils, mesofossils

Primary reference: P. E. Raymond. 1911. The Brachiopoda and Ostracoda of the Chazyan. Annals of the Carnegie Museum 7:215-259 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 172201: authorized by Björn Kröger, entered by Björn Kröger on 30.07.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

• "List given by Dr. H. M. Ami in Report of the Geological Survey of Canada, 1899, section J, page 139.", in Raymond (1906)
Ostracoda
 Leperditicopida - Isochilinidae
Trilobita
 Proetida - Bathyuridae
Bathyurus cf. candatus trilobite
Bathyurus cf. Bathyurus candatus
Bathyurus cf. angelini trilobite
Bathyurus cf. Bathyurus angelini
 Asaphida - Asaphidae
"Asaphus canalis" = Isoteloides canalis
"Asaphus canalis" = Isoteloides canalis Whitfield 1886 trilobite
Gastropoda
 Euomphalina - Raphistomatidae
"Pleurotomaria calyx" = Raphistoma calyx
"Pleurotomaria calyx" = Raphistoma calyx Billings 1859 snail
 Murchisoniina - Trochonematidae
"Trochonema pauperum" = Globonema pauperum
"Trochonema pauperum" = Globonema pauperum Perner 1903 snail
Cephalopoda
 Orthocerida - Orthoceratidae
Orthoceras cf. allumettense
Orthoceras cf. Orthoceras allumettense
Bivalvia
 Modiomorphida - Modiomorphidae
Modiolopsis parviuscula Billings 1859 clam
 Cyrtodontida - Cyrtodontidae
Cyrtodonta breviuscula Billings 1859 clam
 Solemyida - Ctenodontidae
Ctenodonta parvidens Raymond 1905 clam
Rhynchonellata
 Rhynchonellida - Trigonirhynchiidae
"Rhynchonella plena" = Rostricellula plena, "Camarotoechia plena" = Rostricellula plena
"Rhynchonella plena" = Rostricellula plena Hall 1847
"Camarotoechia plena" = Rostricellula plena Hall 1847
Lingulata
 Lingulida - Obolidae
"Lingula huronensis" = Lingulella huronensis, "Lingula lyelli" = Ectenoglossa lyelli, "Lingula mantelli" = Ectenoglossa mantelli, "Lingula belli" = Palaeoglossa belli
"Lingula huronensis" = Lingulella huronensis Billings 1859
"Lingula lyelli" = Ectenoglossa lyelli Billings 1859
"Lingula mantelli" = Ectenoglossa mantelli Billings 1859
or closely allied species
"Lingula belli" = Palaeoglossa belli Billings 1859
Anthozoa
 Lichenariida - Lyoporidae
"Columnaria incerta" = Eofletcheria incerta
"Columnaria incerta" = Eofletcheria incerta Billings 1859 tabulate coral
Scolithus
  -
 Ichnofossils -