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Merrimack Formation

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Merrimack Formation
Stratigraphic range: Silurian
TypeGeological formation
UnderliesGun River Formation[1]
Location
Region Quebec
Country Canada

The Merrimack Formation is a geologic formation in Quebec. It preserves fossils dating back to the Silurian period.

Fossil content

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Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.
Brachiopods
Genus Species Presence Material Notes Images
Cerasina C. pycnata Near Merrimack Point, northeastern coast of Anticosti Island.[2] More than 200 specimens.[2] Genus renamed to Cerasinella.[3]
Cerasinella C. pycnata Near Merrimack Point, northeastern coast of Anticosti Island.[2] More than 200 specimens.[2] An atrypoid originally named Cerasina.[3]
Fenestrirostra F. glacialis Middle and upper beds of the formation.[4] A rhynchonellid also found in the lowermost Gun River Formation.
F. primaeva Lower part of the middle Merrimack Formation.[4] A rhynchonellid.
Stricklandia S. sp. "A22=C683 (2 broken shells); A1242 (15, broken); A1329 (1 broken dorsal valve)".[5] Also found in the Gun River Formation.
Virgiana V. mayvillensis "A505 (1 shell); A 739 (5, all broken); A 741 (33, most damaged); A842 (38, most damaged); A 1330 (12 shells)".[5]

See also

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References

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  1. ^ Copper, Paul; Long, Darrel G. F.; Jin, Jisuo (2012). "The Early Silurian Gun River Formation of Anticosti Island, eastern Canada: A key section for the mid-Llandovery of North America". Newsletters on Stratigraphy. 45 (3): 263. doi:10.1127/0078-0421/2012/0024. ISSN 0078-0421.
  2. ^ a b c d Copper, Paul (September 1995). "Five new genera of Late Ordovician-Early Silurian brachiopods from Anticosti Island, eastern Canada". Journal of Paleontology. 69 (5): 846–862. doi:10.1017/s0022336000035526. ISSN 0022-3360. S2CID 132079646.
  3. ^ a b Copper, Paul (September 2015). "Cerasinella, A replacement name for the Silurian brachiopod genus Cerasina Copper 1995, Anticosti Island". Journal of Paleontology. 89 (5): 894. doi:10.1017/jpa.2015.55. ISSN 0022-3360. S2CID 130558774.
  4. ^ a b Jin, Jisuo; Caldwell, W. G. E.; Copper, Paul (March 1990). "Evolution of the Early Silurian rhynchonellid brachiopod Fenestrirostra in the Anticosti Basin of Quebec". Journal of Paleontology. 64 (2): 214–222. doi:10.1017/s0022336000018370. ISSN 0022-3360. S2CID 132248649.
  5. ^ a b Jin, Jisuo; Copper, Paul. "Late Ordovician and Early Silurian pentamerid brachiopods of Anticosti Island, Québec, Canada". Palaeontographica Canadiana.


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