Truro Island - 12.5 meters (Ordovician of Canada)

Where: Nunavut, Canada (75.3° N, 95.1° W: paleocoordinates 4.0° N, 37.6° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Orthograptus fastigatus graptolite zone, Irene Bay Formation, Ashgill (449.5 - 443.7 Ma)

• bed-level stratigraphic resolution

Environment/lithology: argillaceous limestone

Size class: macrofossils

Preservation: cast

Reposited in the GSC

Primary reference: M. J. Melchin. 1987. Upper Ordovician graptolites from the Cape Phillips Formation, Canadian Arctic Islands. Bulletin of the Geological Society of Denmark 35:191-202 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 184426: authorized by Pete Wagner, entered by Pete Wagner on 25.02.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Graptolithina
 Diplograptoidea - Diplograptidae
Orthograptus fastigatus, Orthograptus thorsteinssoni, "Orthograptus ex gr. amplexicaulis" = Rectograptus amplexicaulis, "Climacograptus latus" = Amplexograptus latus
Orthograptus fastigatus Davies 1929 diplograptoid
Orthograptus thorsteinssoni Melchin 1987 diplograptoid
"Orthograptus ex gr. amplexicaulis" = Rectograptus amplexicaulis Hall 1847 diplograptoid
"Climacograptus latus" = Amplexograptus latus Elles and Wood 1906 diplograptoid