Jupiter Formation

Last updated
Jupiter Formation
Stratigraphic range: Early Silurian (Aeronian-Telychian) 440.8–433.4  Ma
Type Geological formation
Sub-unitsFrom the base upwards:
  • Goéland Member
  • East Point Member
  • Richardson Member
  • Cybèle Member
  • Ferrum Member
  • Pavillon Member
Overlies Gun River Formation [1]
Thickness167 meters [1]
Location
Region Quebec
Country Canada
Type section
Named for Jupiter River
Named bySchuchert and Twenhofel [1]
Year defined1910 [1]

The Jupiter Formation is a geologic formation in Quebec, well-exposed in the southern third of Anticosti Island and lying in the St Lawrence River Valley. [1] 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.

Trace Fossils

Trace fossils
GenusSpeciesPresenceMaterialNotesImages
Klemmatoica K. linguliformaGoéland Member. [2] Associated with the brachiopod Rowellella and the shell of a Phanerotrema. [2]
Trypanites Goéland Member. [3] Borings in gastropod shells. [3]

Vertebrates

Conodonts
GenusSpeciesPresenceMaterialNotesImages
Icriodella I. deflectaLower two members. [4] Material originally thought to be from the Gun River Formation. [4]

Invertebrates

Brachiopods
GenusSpeciesPresenceMaterialNotesImages
Clorinda C. (Phricoclorinda) chaloupensisCybèle Member. [5] A749 (112, mostly well-preserved); A850 (178); A937 (about 100,some embedded in small blocks); A939 (44); A1040 (105); A1047 (1); A1064b (76); A1125 (68). [5]
C. tumidulaGoéland, Richardson, Ferrum and Pavillon Members. [5]
C. superundataGoéland Member [5]
Costistricklandia C. brevisPavillon Member. [5] "A279b (1 broken ventral valve, 1 small slab with interiors exposed) and A333 (>10 fragmentary, disarticulated valves)". [5]
C. gaspeensisPavillon Member (top). [5] A 107-108 (1); A 279b (5 broken valves on small slab); A281 (3); A418-5 (10 valves on slabs); A554 (2). [5]
Dihelictera D. acrolophaEast Point Member. [6] Several hundred specimens. [6]
Ehlersella E. davidsoniiCybèle and Ferrum members. [5]
E. transulcataBasal Ferrum Member. [5] A 185 (a crushed shell) and A 1066b (32, variously damaged). [5]
Joviatrypa J. brabylaLower Goéland Member. [6] Several thousand specimens. [6]
Microcardinalia M. (Chiastodoca) salteriiFerrum Member [5]
M. (Chiastodoca) richardsoniGoéland and Richardson members. [5]
M. (Chiastodoca) fabatinaUpper Ferrum Member. [5] A101 (270 specimens). [5]
M. (Dauphinella) divaricataCybèle and Ferrum members. [5]
M. (Dauphinella) melissaUppermost Ferrum Member and Pavillon Member. [5]
M. (Dauphinella) sp.Ferrum and Pavillon Members. [5] A255 (16 free shells, 6 slabs with shells in life position) and A108 (1 specimen). [5]
Parastrophinella P. opsUpper Richardson Member. [5] A1158 (3 shells). [5]
P. sp.East Point Member and Ferrum Member. [5] A863 (1 shell) and A959 (1 shell). [5]
Pentameroides P. subrectusPavillon Member. [5] "A333 (about 1 conjoined shell; 40 incomplete specimens), A 1395 (6 conjoined shells, 12 ventral valves)". [5]
Pentamerus P. oblongusRichardson, Cybèle, Ferrum and Pavillon Members. [5]
Pentamerus oblongus - Kyoto University Museum - DSC06413.JPG
P. palaformisGoéland Member. [5] Also found in the Gun River Formation.
Rowellella R.? anticostiensisGoéland Member. [2] Specimen associated with the shell of a Phanerotrema and the trace fossil Klemmatoica linguliforma. [2] A lingulid.
Stricklandia S. gwelaniGoéland Member. [5] Also found in the Gun River Formation.
S. planirostrataFerrum Member. [5]
Corals
GenusSpeciesPresenceMaterialNotesImages
Acidolites A. sp.An unnamed species of the genus. [7]
Cornulitids
GenusSpeciesPresenceMaterialNotesImages
Conchicolites Goéland Member. [2] Two individuals encrusting the surface of a Clathrodictyon, which itself is associated with a Phanerotrema shell. [2]
Echinoderms
GenusSpeciesPresenceMaterialNotesImages
Perforocycloides P. nathalieaeCybèle Member. [8] MPEP335.7. [8] A cyclocystoid.
Rhenopyrgus R. viviani Cybèle Member to Pavillon Member. [9] An edrioasteroid.
Gastropods
GenusSpeciesPresenceMaterialNotesImages
Phanerotrema P. sp.Goéland Member. [3] [2] Shells, some with Trypanites borings or other associated organisms. [3] [2] A phanerotrematid.
Sponges
GenusSpeciesPresenceMaterialNotesImages
Clathrodictyon Goéland Member. [2] Specimen found growing on a Phanerotrema shell. [2] A stromatoporoid.
Trilobites
GenusSpeciesPresenceMaterialNotesImages
Encrinurus E. deomenos [10]
Dalmanites D. jupiterensis [11]

See also

References

  1. 1 2 3 4 5 Copper, P.; Long, D.G.F. (31 October 1990). "Stratigraphic revision of the Jupiter Formation, Anticosti Island, Canada: a major reference section above the Ordovician-Silurian boundary". Newsletters on Stratigraphy. 23 (1): 11–36. doi:10.1127/nos/23/1990/11. ISSN   0078-0421.
  2. 1 2 3 4 5 6 7 8 9 10 Ove, Tapanila, Leif Ebbestad, Jan (2008). Benthic island community on the back of a snail: Silurian, Anticosti Island, Canada. Uppsala universitet, Evolutionsmuseet. OCLC   1235121208.{{cite book}}: CS1 maint: multiple names: authors list (link)
  3. 1 2 3 4 Ebbestad, Jan Ove R.; Tapanila, Leif (9 June 2005). "Non-predatory borings in Phanerotrema (Gastropoda), Early Silurian, Anticosti Island, Québec, Canada" . Palaeogeography, Palaeoclimatology, Palaeoecology. 221 (3): 325–341. doi:10.1016/j.palaeo.2005.03.003. ISSN   0031-0182.
  4. 1 2 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.
  5. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Jin, Jisuo; Copper, Paul. "Late Ordovician and Early Silurian pentamerid brachiopods of Anticosti Island, Québec, Canada". Palaeontographica Canadiana.
  6. 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.
  7. ↑ Dixon, O. A. (January 1986). "The heliolitid coral Acidolites in Ordovician–Silurian rocks of eastern Canada1" . Journal of Paleontology. 60 (1): 26–52. doi:10.1017/S002233600002148X. ISSN   0022-3360. S2CID   130759173.
  8. 1 2 Ewin, Timothy A. M.; Reich, Mike; Graham, Mark R.; Cournoyer, Mario E. (1 December 2019). "Perforocycloides nathalieae new genus and species, an unusual Silurian cyclocystoid (Echinodermata) from Anticosti Island, Québec, Canada". PalZ. 93 (4): 625–635. doi: 10.1007/s12542-019-00483-w . hdl: 10141/622663 . ISSN   1867-6812.
  9. ↑ Ewin, T. A. M.; Martin, M.; Isotalo, P.; Zamora, S. (2020). "New rhenopyrgid edrioasteroids (Echinodermata) and their implications for taxonomy, functional morphology, and paleoecology". Journal of Paleontology. 94. Universidad de Zaragoza: 115–130. doi:10.1017/jpa.2019.65. ISSN   0022-3360. S2CID   204263950.
  10. ↑ "The Silurian trilobite Encrinurus punctatus (Wahlenberg) and allied species | The Palaeontological Association". www.palass.org. Retrieved 19 September 2022.
  11. ↑ W. H. Twenhofel (1928). "Geology of Anticosti Island". Geological Survey of Canada Memoir. 154 (2132): 1–351.

20201227 Pterygotus anglicus.png

This article related to the Silurian period is a stub. You can help Wikipedia by expanding it.

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.