Английская Википедия:Gull River Formation

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Шаблон:Infobox rockunit The Gull River Formation is a geological formation of Middle Ordovician age (Caradoc Stage), which outcrops in Ontario, Canada.[1] Lithologically, the formation is dominated by light grey to brown limestones and greenish gray dolomites with thin shale and sandstone interlayers.[2][3]

Fossil content

Invertebrates

Chelicerates

Chelicerates reported from the Gull River Formation
Genus Species Presence Material Notes Images
Lunataspis L. borealis Upper Member, Kingston, Ontario.[4] 3 specimens (1 adult & 2 juveniles or subadults).[4] A horseshoe crab.

Flora

Acritarchs

Acritarchs reported from the Gull River Formation
Genus Species Presence Material Notes Images
Dicommopalla D. rissae Southern Ontario.[5] Also found in the Bobcaygeon Formation.

References

Шаблон:Reflist


Шаблон:Canada-geologic-formation-stub