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. It preserves fossils dating back to the Silurian period.
Fossil content
Trace Fossils Trace fossils Genus Species Presence Material Notes ImagesKlemmatoicaK. linguliformaGoéland Member.Associated with the brachiopod Rowellella and the shell of a Phanerotrema.TrypanitesGoéland Member.Borings in gastropod shells.
Vertebrates Conodonts Genus Species Presence Material Notes Images IcriodellaI. deflecta Lower two members. Material originally thought to be from the Gun River Formation.
Invertebrates Brachiopods Genus Species Presence Material Notes ImagesClorindaC. (Phricoclorinda) chaloupensisCybèle Member.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).C. tumidulaGoéland, Richardson, Ferrum and Pavillon Members.C. superundataGoéland MemberCostistricklandiaC. brevisPavillon Member."A279b (1 broken ventral valve, 1 small slab with interiors exposed) and A333 (>10 fragmentary, disarticulated valves)".C. gaspeensisPavillon Member (top).A 107-108 (1); A 279b (5 broken valves on small slab); A281 (3); A418-5 (10 valves on slabs); A554 (2).DihelicteraD. acrolophaEast Point Member.Several hundred specimens.EhlersellaE. davidsoniiCybèle and Ferrum members.E. transulcataBasal Ferrum Member.A 185 (a crushed shell) and A 1066b (32, variously damaged).JoviatrypaJ. brabylaLower Goéland Member.Several thousand specimens.MicrocardinaliaM. (Chiastodoca) salteriiFerrum MemberM. (Chiastodoca) richardsoniGoéland and Richardson members.M. (Chiastodoca) fabatinaUpper Ferrum Member.A101 (270 specimens).M. (Dauphinella) divaricataCybèle and Ferrum members.M. (Dauphinella) melissaUppermost Ferrum Member and Pavillon Member.M. (Dauphinella) sp.Ferrum and Pavillon Members.A255 (16 free shells, 6 slabs with shells in life position) and A108 (1 specimen).ParastrophinellaP. ops Upper Richardson Member.A1158 (3 shells).P. sp.East Point Member and Ferrum Member.A863 (1 shell) and A959 (1 shell).PentameroidesP. subrectusPavillon Member."A333 (about 1 conjoined shell; 40 incomplete specimens), A 1395 (6 conjoined shells, 12 ventral valves)".PentamerusP. oblongusRichardson, Cybèle, Ferrum and Pavillon Members.P. palaformisGoéland Member.Also found in the Gun River Formation.RowellellaR.? anticostiensisGoéland Member.Specimen associated with the shell of a Phanerotrema and the trace fossil Klemmatoica linguliforma.A lingulid.StricklandiaS. gwelaniGoéland Member.Also found in the Gun River Formation.S. planirostrataFerrum Member.
Corals Genus Species Presence Material Notes Images AcidolitesA. sp. An unnamed species of the genus.
Cornulitids Genus Species Presence Material Notes Images Conchicolites Goéland Member.Two individuals encrusting the surface of a Clathrodictyon, which itself is associated with a Phanerotrema shell.
Echinoderms Genus Species Presence Material Notes Images PerforocycloidesP. nathalieae Cybèle Member.MPEP335.7. A cyclocystoid. RhenopyrgusR. vivianiCybèle Member to Pavillon Member.An edrioasteroid.
Gastropods Genus Species Presence Material Notes Images PhanerotremaP. sp. Goéland Member.Shells, some with Trypanites borings or other associated organisms. A phanerotrematid.
Sponges Genus Species Presence Material Notes Images Clathrodictyon Goéland Member.Specimen found growing on a Phanerotrema shell. A stromatoporoid.
Trilobites Genus Species Presence Material Notes Images EncrinurusE. deomenos DalmanitesD. jupiterensis
See also
List of fossiliferous stratigraphic units in Quebec
References