Where: Northwest Territories, Canada (62.0° N, 127.0° W: paleocoordinates 7.5° N, 57.8° W)
• coordinate estimated from map
• basin-level geographic resolution
When: Ceraurus gabrielsi trilobite zone, Sunblood, Esbataottine Formation, Blackriveran (457.3 - 449.6 Ma)
• Collection derived from two formations
Environment/lithology: lithified, gray limestone
Size class: macrofossils
Preservation: replaced with silica
Collection methods: bulk, chemical,
Primary reference: R. Ludvigsen. 1979. A trilobite zonation of Middle Ordovician rocks, southwestern District of Mackenzie. Geological Survey of Canada Bulletin 312:1-98 [S. Holland/S. Holland/J. Ju]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 24631: authorized by Steven Holland, entered by Steven Holland on 12.08.2002, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Stenolaemata | |
Stictopora sp. Hall 1847 | |
Stictoporella sp. Ulrich 1882
Ptilodictya sp. Lonsdale 1839 | |
? Helopora sp. Hall 1851 | |
Chasmatoporella sp. Nekhoroshev 1936 | |
Rhynchonellata | |
Rostricellula sp. Ulrich and Cooper 1942 | |
Doleroides sp. Cooper 1930 | |
Hesperorthis sp. Schuchert and Cooper 1931 | |
Strophomenata | |
Oepikina sp. Salmon 1942 | |
Trilobita | |
Isotelus sp. Dekay 1824 trilobite | |
Remopleurides sp. Portlock 1843 trilobite | |
Nanillaenus sp. Jaanusson 1954 trilobite
Bumastoides sp. Whittington 1954 trilobite | |
Bathyurus platyparius n. sp. Ludvigsen 1979 trilobite
Bathyurus cf. ulu Ludvigsen 1979 trilobite
Bathyurus esbataottinensis n. sp. Ludvigsen 1979 trilobite | |
Walencrinuroides rolfi Moss and Westrop 2014 trilobite
Cybeloides cimelia Chatterton and Ludvigsen 1976 trilobite | |
Ceraurinella media n. sp. Ludvigsen 1979 trilobite
Ceraurus gabrielsi n. sp. Ludvigsen 1979 trilobite
Ceraurus blussoni n. sp. Ludvigsen 1979 trilobite | |
Calyptaulax spp. Cooper 1930 trilobite | |
Amphilichas sp. Raymond 1905 trilobite
Hemiarges sp. Gürich 1901 trilobite | |
Ostracoda | |
Isochilina cf. gregaria ostracod | |
Krausella inaequalis ostracod
Krausella ? minuta ostracod | |
Bairdiocypris sp. Kegel 1932 ostracod | |
Cryptophyllus oboloides ostracod | |
Bolbopisthia lenzi ostracod
Bolbopisthia ludvigseni ostracod | |
Leperditella mundula ostracod | |
Tetradella perplexa ostracod | |
? Oepikella sp. ostracod | |
Schmidtella affinis ostracod | |
Dicranella macrocarinata ostracod |