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The Norway Point Formation is a geologic formation in Michigan. It preserves fossils dating back to the middle Devonian period.
Stratigraphy of the Devonian deposits of the northern part of the Lower Peninsula of Michigan, showing the Norway Point Formation[1]
Fossil content
Vertebrates
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
|
|
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.
|
|
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.
|
|
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
- ^ a b c d e f 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.
- ^ a b c d e f g h i j k l Orr, R. William (1971). "Conodonts from Middle Devonian Strata from the Michigan Basin".
- ^ a b c d e f g h i 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.
- ^ 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.
- ^ a b 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.
- ^ 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 ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc bd be bf bg Kesling, R. V.; Weiss, Martin (1953). "Ostracods from the Norway Point Formation of Michigan". hdl:2027.42/48276.
- ^ a b c d e Stumm, Erwin (1953). "Trilobites of the Devonian Traverse Group of Michigan" (PDF). University of Michigan Press - Museum of Paleontology.