Merrimack Formation

Last updated
Merrimack Formation
Stratigraphic range: Silurian
Type Geological formation
Underlies Gun 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.

Contents

Fossil content

Color key
Taxon Reclassified taxonTaxon falsely reported as presentDubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.
Brachiopods
GenusSpeciesPresenceMaterialNotesImages
Cerasina C. pycnataNear Merrimack Point, northeastern coast of Anticosti Island. [2] More than 200 specimens. [2] Genus renamed to Cerasinella. [3]
Cerasinella C. pycnataNear Merrimack Point, northeastern coast of Anticosti Island. [2] More than 200 specimens. [2] An atrypoid originally named Cerasina. [3]
Fenestrirostra F. glacialisMiddle and upper beds of the formation. [4] A rhynchonellid also found in the lowermost Gun River Formation.
F. primaevaLower 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

References

  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. 1 2 3 4 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. 1 2 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. 1 2 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. 1 2 Jin, Jisuo; Copper, Paul. "Late Ordovician and Early Silurian pentamerid brachiopods of Anticosti Island, Québec, Canada". Palaeontographica Canadiana.
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