Norway Point Formation

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Norway Point Formation
Stratigraphic range: Middle Devonian (Givetian)[1]
↓
TypeGeological formation
Unit ofTraverse Group[1]
OverliesFour Mile Dam Formation[1]
Location
RegionFile:Flag of Michigan.svg Michigan
CountryFile:Flag of the United States.svg United States

The Norway Point Formation is a geologic formation in Michigan. It preserves fossils dating back to the middle Devonian period.

File:An examination of the Devonian fishes of Michigan fig-1-full.png
Stratigraphy of the Devonian deposits of the northern part of the Lower Peninsula of Michigan, showing the Norway Point Formation[1]

Fossil content

Vertebrates

Acanthodians
Genus Species Presence Material Notes Images
Oracanthus O. sp. "Four Mile Dam, 6 kilometers northwest of Alpena, Alpena County, Michigan".[1] "A single spine (UMMP 23495)".[1]
Conodonts
Genus Species Presence Material Notes Images
Acodina A. formosa [2] Also found in the Detroit River, Traverse, Dundee, Bell, Alpena and Four Mile Dam formations.
A. lanceolata [2] Also found in the Traverse Formation.
Belodella B. devonicus [2] Also found in the Detroit River, Traverse, Antrim, Alpena and Four Mile Dam formations.
Hindeodella H. germana [2] Also found in the Detroit River, Traverse and Antrim formations.
Icriodus I. cymbiformis [2] Also found in the Detroit River, Traverse, Antrim, Ferron Point, Genshaw, Alpena and Thunder Bay formations.
I. expansus [2] Also found in the Detroit River, Traverse, Antrim, Lucas, Anderdon, Dundee, Bell, Ferron Point, Genshaw, Alpena, Potter Farm and Thunder Bay formations.
I. latericrescens latericrescens [2] Also found in the Traverse, Bell, Ferron Point, Genshaw, Newton Creek, Alpena, Four Mile Dam, Potter Farm and Thunder Bay formations.
Ligonodina L. falciformis [2] Also found in the Traverse Formation and Alpena Limestone.
Ozarkodina O. willsi [2] Also found in the Detroit River, Traverse, Antrim, Dundee, Alpena and Four Mile Dam formations.
Polygnathus P. linguiformis linguiformis [2] Also found in the Detroit River, Traverse, Antrim, Dundee, Bell and Alpena formations.
P. varcus [2] Also found in the Traverse, Antrim, Alpena, Four Mile Dam and Thunder Bay formations.
Synprioniodina S. regularis [2] Also found in the Detroit River, Traverse, Antrim, Dundee, Bell and Alpena formations.

Invertebrates

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
Chonetes C. pachyactis [3]
Leptalosia L. radicans [3] Also found in the Gravel Point, Alpena, Four Mile Dam, Genshaw, Arkona and Hungry Hollow formations.
Pentamerella P. pericosta [3] Also found in the Beebe School, Widder, Hungry Hollow and Logansport formations.
Pholidostrophia P. ovata [3] Also found in the upper Widder Formation.
Protoleptostrophia P. lirella [3] Also found in the Four Mile Dam Formation and Alpena Limestone.
Schuchertella S. lirella At Thunder Bay River.[3]
Sphenophragmus S. nanus [3] Also found in the Beebe School, Ludlowville, Wanakah and Widder formations.
Strophodonta S. alpenensis [3] A strophomenid.
Truncalosia T. gibbosa [3] Also found in the Genshaw, Alpena, Gravel Point, Petoskey, Potter Farm and Arkona formations, and the Hamilton Group.
Tylothyris T. subvaricosa [4] Also found in the Cedar Valley, Milwaukee, Mineola, Bell, Rockport Quarry, Ferron Point, Genshaw, Alpena, Gravel Point and Potter Farm formations.
Corals
Genus Species Presence Material Notes Images
Aulocystis A. commensalis [5] Also found in the Ipperwash Limestone and Wanakah Shale.
A. stummi Thunder Bay River below Four Mile Dam, Alpena County, Michigan.[5]
Ostracods
Genus Species Presence Material Notes Images
Aechmina A. choanobasota 2 right valves.[6]
A. sp. A 2 right valves.[6]
A. sp. B A carapace, No. 29828.[6]
Arcyzona A. aperticarinata [6]
A. diademata A carapace and right valve.[6]
A. sp. 2 carapaces.[6]
Barychilina B. embrithes A left valve[6]
B. labyrinthea A carapace.[6]
B. sp. A left valve.[6]
Birdsallella B. delawarensis [6]
B. tumida [6]
Bythocypris B. devonica borealis A carapace.[6]
B. parsonia A carapace.[6]
B. subquadrata 2 carapaces.[6]
Coelonella C. scapha 2 carapaces.[6]
Ctenoloculina C. cicatricosa [6]
Dizygopleura D. euglyphea A left valve.[6]
Euglyphella E. compressa A right valve.[6]
E. sigmoidalis [6]
E. simplex [6]
Eukloedenella E. doverensis One female left valve and one male left valve.[6]
Falsipollex F. equipapillatus [6]
Glyptopleura G. bipunctata [6]
Halliella H. bellipuncta 2 right valves.[6]
Healdia H. gibba [6]
H. sp. A right valve.[6]
Hollinella H. ampla A left valve.[6]
H. inclinisulcata [6]
H. labrosa 3 right valves.[6]
H. tendilobata [6]
H. sp. A "Two carapaces, Nos. 27352 and 27353".[6]
H. sp. B "A male carapace, No. 27354".[6]
Hyphasmaphora H. textiligera 2 right valves.[6]
Jenningsina J. catenulata [6]
J. scalpta A left valve.[6]
Lucasella L. mundula [6]
Monoceratina M. casei "2 carapaces, Nos. 27374 and 27375".[6]
Octonaria O. crescentiformis [6]
O. quadricostata [6]
Parabolbina P. acinina 2 male right valves.[6]
Ponderodictya P. punctulifera [6]
P. sp. One specimen (No. 29891).[6] May be an early instar of P. punctulifera.[6]
Punctoprimitia P. subaequalis 1 right valve and 4 left valves.[6]
Quasillites Q. binodosus [6]
Q. jubatus [6]
Q. lobatus A right valve.[6]
Q. obliquus A carapace.[6]
Q. cf. Q. ornatus A carapace.[6]
Q. ornatus 3 carapaces and a right valve.[6]
Reticestus R. acclivitatus [6]
Ropolonellus R. papillatus A right valve.[6]
R. plenus A right valve.[6]
Ruptivelum R. bacculatum [6]
Subligaculum S. biorthogonium [6]
S. trullatum 2 male left valves and a broken female right valve.[6]
Tetrasacculus T. paeneloculatus [6]
Ulrichia U. fragilis 1 carapace and 2 left valves.[6]
U. spinifera 3 right valves.[6]
Trilobites
Genus Species Presence Material Notes Images
Dechenella D. (Basidechenella) sp. A "Nos. 25506, 28719, 28720, and 28721".[7]
Dipleura D. dekayi "Shales just above the Spinocyrtia zone".[7] Also found in the Thunder Bay Limestone.
File:Dipleura dekayi 2.jpg
Eldredgeops E. rana [7] Originally reported as Phacops rana. Also found in the Hamilton, Hungry Hollow, Widder, Plum Brook, Prout, Ten Mile Creek, Alpena, Four Mile Dam and Gravel Point formations.
Greenops G. aequituberculatus [7] Also found in the Gravel Point Formation and Dock Street clay of the Four Mile Dam Formation.
Phacops P. rana [7] Moved to the genus Eldredgeops.

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Stack, Jack; Sallan, Lauren (20 September 2018). "An examination of the Devonian fishes of Michigan". PeerJ. 6 (2): e5636. doi:10.7717/peerj.5636. PMC 6151260. PMID 30258725.
  2. ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 Orr, R. William (1971). "Conodonts from Middle Devonian Strata from the Michigan Basin". {{cite journal}}: Cite journal requires |journal= (help)
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 Imbrie, John (1959). "Brachiopods of the Traverse group (Devonian) of Michigan. Part 1, Dalmanellacea, Pentameracea, Strophomenacea, Orthotetacea, Chonetacea, and Productacea. Bulletin of the AMNH ; v. 116, article 4". hdl:2246/1258. {{cite journal}}: Cite journal requires |journal= (help)
  4. ↑ Rogers, Frederick S.; Pitrat, Charles W. (May 1987). "Distribution of Tylothyris (Brachiopoda) and its occurrence in the Traverse Group (Middle Devonian) of Michigan". Journal of Paleontology. 61 (3): 494–507. doi:10.1017/S0022336000028651. ISSN 0022-3360. S2CID 130922140.
  5. ↑ 5.0 5.1 Watkins, J. Lloyd (1959). "Middle Devonian Auloporid Corals from the Traverse Group of Michigan". Journal of Paleontology. 33 (5): 793–808. ISSN 0022-3360. JSTOR 1300915.
  6. ↑ 6.00 6.01 6.02 6.03 6.04 6.05 6.06 6.07 6.08 6.09 6.10 6.11 6.12 6.13 6.14 6.15 6.16 6.17 6.18 6.19 6.20 6.21 6.22 6.23 6.24 6.25 6.26 6.27 6.28 6.29 6.30 6.31 6.32 6.33 6.34 6.35 6.36 6.37 6.38 6.39 6.40 6.41 6.42 6.43 6.44 6.45 6.46 6.47 6.48 6.49 6.50 6.51 6.52 6.53 6.54 6.55 6.56 6.57 6.58 Kesling, R. V.; Weiss, Martin (1953). "Ostracods from the Norway Point Formation of Michigan". hdl:2027.42/48276. {{cite journal}}: Cite journal requires |journal= (help)
  7. ↑ 7.0 7.1 7.2 7.3 7.4 Stumm, Erwin (1953). "Trilobites of the Devonian Traverse Group of Michigan" (PDF). University of Michigan Press - Museum of Paleontology.

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