Zygospiraella community, Manitoulin Fm., Manitoulin Island (Silurian of Canada)

Where: Ontario, Canada (45.8° N, 82.3° W: paleocoordinates 20.6° S, 48.8° W)

• coordinate based on political unit

When: Manitoulin Formation, Llandovery (443.4 - 433.4 Ma)

• "Lower Llandoverian (A + B)"

Environment/lithology: lagoonal; dolomite

• "thin med-bedded dolomite (w/ irreg. bedded dolo in bioherms). quiet protected lagoonal inter-reef habitat. BA2? Cratonic"

Size class: macrofossils

Primary reference: P. Copper and D. J. Grawbarger. 1978. Paleoecological succession leading to a late Ordovician biostrome on Manitoulin Island, Ontario. Canadian Journal of Earth Sciences 15:1987-2005 [W. Kiessling/B. Bookhagen/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 508: authorized by Arnold Miller, entered by Mike Sommers on 07.01.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• "Copper, 1978. Paleoenvironments and paleocommunities in the Ord-Sil sequence of Manitoulin Island. Mich. Basin. Geol. Soc. Spec. Paper 3:47-61"
 Rugosa -
Rugosa indet. horn coral
 Favositida - Favositidae
Paleofavosites sp. Twenhofel 1914 tabulate coral
 Atrypida - Atrypinidae
Eospirigerina sp. Schuchert and Cooper 1930
originally entered as "Eospiringerina sp."
 Atrypida -
 Rhynchonellida - Rhynchonellidae
Rhynchonellidae indet. Gray 1848
rhynchonellids - originally entered as "Rhynchonellida indet."
 Orthida - Rhipidomellidae
Mendacella sp. Cooper 1930
 Orthida - Platystrophiidae
 Orthotetida - Chilidiopsidae
Fardenia sp. Lamont 1935
 Cryptostomata - Ptilodictyidae
? Phaenopora sp. Hall 1851
branching bryozoan - originally entered as "? Phaenopora sp."
 Rhombifera - Callocystitidae
Brockocystis sp. Foerste 1914
Crinoidea indet. Miller 1821 Sea lily