From Wikipedia, the free encyclopedia
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.
- ^
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bg Kesling, R. V.; Weiss, Martin (1953).
"Ostracods from the Norway Point Formation of Michigan".
hdl:
2027.42/48276.
- ^
a
b
c
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e Stumm, Erwin (1953).
"Trilobites of the Devonian Traverse Group of Michigan" (PDF). University of Michigan Press - Museum of Paleontology.