Otarion Association, Prongs Creek Section (Silurian of Canada)

Where: Yukon Territory, Canada (65.0° N, 136.0° W: paleocoordinates 13.6° N, 52.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Road River Formation, Llandovery (443.4 - 433.4 Ma)

• Equivalent to or slightly older than Monograptus turriculatus zone, which would put in in the earlierst Telychian or latest Aeronian.

• group of beds-level stratigraphic resolution

Environment/lithology: basinal (); argillaceous lime mudstone

• SEP environmental call based on given information
• "...medium-bedded, highly argillaceous lime mudstones of deep-water aspect..."

Size class: macrofossils

Primary reference: R. Ludvigsen and R. P. Tripp. 1990. Silurian trilobites from the northern Yukon Territory. Life Sciences Contributions, Royal Ontario Museum (153)1-59 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 23099: authorized by Michael Foote, entered by Michael Foote on 09.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Phacopida - Encrinuridae
Cromus princeps trilobite
 Proetida - Otarionidae
 Corynexochida - Styginidae
 Odontopleurida - Odontopleuridae
Conodonta
 Panderodontida - Panderodontidae
Panderodus gracilis Branson and Mehl 1933 conodont
 Ozarkodinida - Spathognathodontodae
"Ozarkodina excavata" = Wurmiella excavata
"Ozarkodina excavata" = Wurmiella excavata Branson and Mehl 1933 conodont
 Belodellida - Belodellidae
Walliserodus sancticlairi Cooper 1976 conodont
[entered as Walliserodus santiclair]
 Belodellida - Dapsilodontidae
Dapsilodus obliquicostatus Branson and Mehl 1933 conodont
 Prioniodontida -
Oulodus fluegeli conodont
genus name in quotes