Jupiter Formation

Jupiter Formation
Stratigraphic range: Early Silurian (Aeronian-Telychian) 440.8–433.4 Ma
TypeGeological formation
Sub-unitsFrom the base upwards:
  • Goéland Member
  • East Point Member
  • Richardson Member
  • Cybèle Member
  • Ferrum Member
  • Pavillon Member
OverliesGun River Formation[1]
Thickness167 meters[1]
Location
Region Quebec
Country Canada
Type section
Named forJupiter 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.

Fossil content

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.

Trace Fossils

Trace fossils
Genus Species Presence Material Notes Images
Klemmatoica K. linguliforma Goéland 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
Genus Species Presence Material Notes Images
Icriodella I. deflecta Lower two members.[4] Material originally thought to be from the Gun River Formation.[4]

Invertebrates

Brachiopods
Genus Species Presence Material Notes Images
Clorinda C. (Phricoclorinda) chaloupensis Cybèle 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. tumidula Goéland, Richardson, Ferrum and Pavillon Members.[5]
C. superundata Goéland Member[5]
Costistricklandia C. brevis Pavillon Member.[5] "A279b (1 broken ventral valve, 1 small slab with interiors exposed) and A333 (>10 fragmentary, disarticulated valves)".[5]
C. gaspeensis Pavillon 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. acrolopha East Point Member.[6] Several hundred specimens.[6]
Ehlersella E. davidsonii Cybèle and Ferrum members.[5]
E. transulcata Basal Ferrum Member.[5] A 185 (a crushed shell) and A 1066b (32, variously damaged).[5]
Joviatrypa J. brabyla Lower Goéland Member.[6] Several thousand specimens.[6]
Microcardinalia M. (Chiastodoca) salterii Ferrum Member[5]
M. (Chiastodoca) richardsoni Goéland and Richardson members.[5]
M. (Chiastodoca) fabatina Upper Ferrum Member.[5] A101 (270 specimens).[5]
M. (Dauphinella) divaricata Cybèle and Ferrum members.[5]
M. (Dauphinella) melissa Uppermost 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. ops Upper 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. subrectus Pavillon Member.[5] "A333 (about 1 conjoined shell; 40 incomplete specimens), A 1395 (6 conjoined shells, 12 ventral valves)".[5]
Pentamerus P. oblongus Richardson, Cybèle, Ferrum and Pavillon Members.[5]
P. palaformis Goéland Member.[5] Also found in the Gun River Formation.
Rowellella R.? anticostiensis Goéland Member.[2] Specimen associated with the shell of a Phanerotrema and the trace fossil Klemmatoica linguliforma.[2] A lingulid.
Stricklandia S. gwelani Goéland Member.[5] Also found in the Gun River Formation.
S. planirostrata Ferrum Member.[5]
Corals
Genus Species Presence Material Notes Images
Acidolites A. sp. An unnamed species of the genus.[7]
Cornulitids
Genus Species Presence Material Notes Images
Conchicolites Goéland Member.[2] Two individuals encrusting the surface of a Clathrodictyon, which itself is associated with a Phanerotrema shell.[2]
Echinoderms
Genus Species Presence Material Notes Images
Perforocycloides P. nathalieae Cybèle Member.[8] MPEP335.7.[8] A cyclocystoid.
Rhenopyrgus R. viviani Cybèle Member to Pavillon Member.[9] An edrioasteroid.
Gastropods
Genus Species Presence Material Notes Images
Phanerotrema P. sp. Goéland Member.[3][2] Shells, some with Trypanites borings or other associated organisms.[3][2] A phanerotrematid.
Sponges
Genus Species Presence Material Notes Images
Clathrodictyon Goéland Member.[2] Specimen found growing on a Phanerotrema shell.[2] A stromatoporoid.
Trilobites
Genus Species Presence Material Notes Images
Encrinurus E. deomenos [10]

See also

References

  1. ^ a b c d e 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. ^ a b c d e f g h i j 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. ^ a b c d 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. ^ a b 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. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac Jin, Jisuo; Copper, Paul. "Late Ordovician and Early Silurian pentamerid brachiopods of Anticosti Island, Québec, Canada". Palaeontographica Canadiana.
  6. ^ 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.
  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. ^ a b 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.
  • Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 8 July 2014.


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