Where: Newfoundland and Labrador, Canada (50.7° N, 57.4° W: paleocoordinates 30.6° S, 46.7° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Strigigenalis caudata trilobite zone, Catoche Formation (St. George Group), Cassinian (482.3 - 470.0 Ma)
• Measured section is shown with dots indicating collection horizons but fossils occurrences are shown only as ranges rather than occurrences or only partially listed in plate captions.
• formation-level stratigraphic resolution
Environment/lithology: open shallow subtidal; bioturbated, nodular, rubbly limestone and dolomite
Size class: macrofossils
Collected by R. A. Fortey in 1978; reposited in the GSC
Collection methods: mechanical,
• Collected from fairly regular intervals in section but notes that trilobites were most easily recovered from lenses of lime sand which were most abundant in middle of section. Only Bolbocephalus and Petigurus (asaphids) were recovered from main body of limestone.
Primary reference: R. A. Fortey. 1979. Early Ordovician trilobites from the Catoche Formation (St. George Group), western Newfoundland. Geological Survey of Canada Bulletin 321:61-114 [M. Hopkins/M. Hopkins]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 103540: authorized by Melanie Hopkins, entered by Melanie Hopkins on 29.01.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
Trilobita | |
"Isoteloides latimarginatus n. sp." = Isoteloides canalis, Isoteloides peri n. sp.
"Isoteloides latimarginatus n. sp." = Isoteloides canalis Whitfield 1886 trilobite
Isoteloides peri n. sp. Fortey 1979 trilobite | |
Strotactinus insularis Billings 1865 trilobite | |
Uromystrum cf. affine, Bathyurellus abruptus, Bathyurellus platypus n. sp., Benthamaspis conica n. sp., Benthamaspis gibberula, Punka sp., Punka flabelliformis n. sp., Bolbocephalus convexus, "Jeffersonia jenni" = Jeffersonia jenni2, "Jeffersonia angustimarginata" = Jeffersonia jenni1, "Bathyurina timon" = Jeffersonia timon, Petigurus nero, Catochia ornata n. gen. n. sp., Catochia glabra n. sp., Strigigenalis caudata
Uromystrum cf. affine Poulsen 1937 trilobite
Bathyurellus abruptus Billings 1865 trilobite
Bathyurellus platypus n. sp. Fortey 1979 trilobite
Benthamaspis conica n. sp. Fortey 1979 trilobite
Benthamaspis gibberula Billings 1865 trilobite
Punka sp. Fortey 1979 trilobite
Punka flabelliformis n. sp. Fortey 1979 trilobite
Bolbocephalus convexus Billings 1865 trilobite
"Jeffersonia angustimarginata" = Jeffersonia jenni1 Cullison 1944 trilobite pygidium originally assigned to Bathyurina timon
"Bathyurina timon" = Jeffersonia timon Billings 1865 trilobite
Petigurus nero Billings 1865 trilobite
Catochia ornata n. gen. n. sp. Fortey 1979 trilobite
Catochia glabra n. sp. Fortey 1979 trilobite
Strigigenalis caudata Billings 1865 trilobite | |
Ischyrotoma anataphra n. sp.
Ischyrotoma anataphra n. sp. Fortey 1979 trilobite | |
Opipeuter cf. angularis Young 1973 trilobite |