Norway Point Formation

{{Infobox rockunit

| name = Norway Point Formation

| image =

| caption =

| type = Geological formation

| age = {{fossil range|Givetian|Givetian|Middle Devonian (Givetian)}}

| period = Devonian

| prilithology =

| otherlithology =

| namedfor =

| namedby =

| region = {{Flag|Michigan}}

| country = {{Flag|United States}}

| coordinates =

| unitof = Traverse Group

| subunits =

| underlies =

| overlies = Four Mile Dam Formation

| thickness =

| extent =

| area =

| map =

| map_caption =

}}

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

Fossil content

=Vertebrates=

class="wikitable" align="center"
colspan="6" align="center" | Acanthodians
GenusSpeciesPresence

!Material

NotesImages
Oracanthus

|O. sp.

| "Four Mile Dam, 6 kilometers northwest of Alpena, Alpena County, Michigan".{{Cite journal |last1=Stack |first1=Jack |last2=Sallan |first2=Lauren |date=2018-09-20 |title=An examination of the Devonian fishes of Michigan |url=https://www.researchgate.net/publication/327778213 |journal=PeerJ |volume=6 |issue=2 |pages=e5636 |doi=10.7717/peerj.5636|pmid=30258725 |pmc=6151260 |doi-access=free }}

|"A single spine (UMMP 23495)".

|

|

class="wikitable" align="center"
colspan="6" align="center" | Conodonts
GenusSpeciesPresence

!Material

NotesImages
rowspan=2|Acodina

|A. formosa

|

|{{Cite journal |last=Orr |first=R. William |date=1971 |title=Conodonts from Middle Devonian Strata from the Michigan Basin |url=https://scholarworks.iu.edu/dspace/handle/2022/229 |language=en-US}}

|Also found in the Detroit River, Traverse, Dundee, Bell, Alpena and Four Mile Dam formations.

|

A. lanceolata

|

|

|Also found in the Traverse Formation.

|

Belodella

|B. devonicus

|

|

|Also found in the Detroit River, Traverse, Antrim, Alpena and Four Mile Dam formations.

|

Hindeodella

|H. germana

|

|

|Also found in the Detroit River, Traverse and Antrim formations.

|

rowspan="3" |Icriodus

|I. cymbiformis

|

|

|Also found in the Detroit River, Traverse, Antrim, Ferron Point, Genshaw, Alpena and Thunder Bay formations.

|

I. expansus

|

|

|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

|

|

|Also found in the Traverse, Bell, Ferron Point, Genshaw, Newton Creek, Alpena, Four Mile Dam, Potter Farm and Thunder Bay formations.

|

Ligonodina

|L. falciformis

|

|

|Also found in the Traverse Formation and Alpena Limestone.

|

Ozarkodina

|O. willsi

|

|

|Also found in the Detroit River, Traverse, Antrim, Dundee, Alpena and Four Mile Dam formations.

|

rowspan=2|Polygnathus

|P. linguiformis linguiformis

|

|

|Also found in the Detroit River, Traverse, Antrim, Dundee, Bell and Alpena formations.

|

P. varcus

|

|

|Also found in the Traverse, Antrim, Alpena, Four Mile Dam and Thunder Bay formations.

|

Synprioniodina

|S. regularis

|

|

|Also found in the Detroit River, Traverse, Antrim, Dundee, Bell and Alpena formations.

|

=Invertebrates=

{{Paleobiota-key-compact}}

class="wikitable" align="center"
colspan="6" align="center" | Brachiopods
GenusSpeciesPresence

!Material

NotesImages
Chonetes

|C. pachyactis

|

|{{Cite journal |last=Imbrie |first=John |date=1959 |title=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 |url=https://digitallibrary.amnh.org/handle/2246/1258 |language=en-US}}

|

|

Leptalosia

|L. radicans

|

|

|Also found in the Gravel Point, Alpena, Four Mile Dam, Genshaw, Arkona and Hungry Hollow formations.

|

Pentamerella

|P. pericosta

|

|

|Also found in the Beebe School, Widder, Hungry Hollow and Logansport formations.

|

Pholidostrophia

|P. ovata

|

|

|Also found in the upper Widder Formation.

|

Protoleptostrophia

|P. lirella

|

|

|Also found in the Four Mile Dam Formation and Alpena Limestone.

|

Schuchertella

|S. lirella

|At Thunder Bay River.

|

|

|

Sphenophragmus

|S. nanus

|

|

| Also found in the Beebe School, Ludlowville, Wanakah and Widder formations.

|

Strophodonta

|S. alpenensis

|

|

|A strophomenid.

|

Truncalosia

|T. gibbosa

|

|

|Also found in the Genshaw, Alpena, Gravel Point, Petoskey, Potter Farm and Arkona formations, and the Hamilton Group.

|

Tylothyris

|T. subvaricosa

|

|{{Cite journal |last1=Rogers |first1=Frederick S. |last2=Pitrat |first2=Charles W. |date=May 1987 |title=Distribution of Tylothyris (Brachiopoda) and its occurrence in the Traverse Group (Middle Devonian) of Michigan |url=https://www.cambridge.org/core/journals/journal-of-paleontology/article/abs/distribution-of-tylothyris-brachiopoda-and-its-occurrence-in-the-traverse-group-middle-devonian-of-michigan/DBF58D3D881A40ECE487E3EA5C448553 |journal=Journal of Paleontology |language=en |volume=61 |issue=3 |pages=494–507 |doi=10.1017/S0022336000028651 |s2cid=130922140 |issn=0022-3360}}

|Also found in the Cedar Valley, Milwaukee, Mineola, Bell, Rockport Quarry, Ferron Point, Genshaw, Alpena, Gravel Point and Potter Farm formations.

|

class="wikitable" align="center"
colspan="6" align="center" | Corals
GenusSpeciesPresence

!Material

NotesImages
rowspan=2|Aulocystis

|A. commensalis

|{{Cite journal |last=Watkins |first=J. Lloyd |date=1959 |title=Middle Devonian Auloporid Corals from the Traverse Group of Michigan |url=https://www.jstor.org/stable/1300915 |journal=Journal of Paleontology |volume=33 |issue=5 |pages=793–808 |jstor=1300915 |issn=0022-3360}}

|

|Also found in the Ipperwash Limestone and Wanakah Shale.

|

A. stummi

| Thunder Bay River below Four Mile Dam, Alpena County, Michigan.

|

|

|

class="wikitable" align="center"
colspan="6" align="center" | Ostracods
GenusSpeciesPresence

!Material

NotesImages
rowspan="3" |Aechmina

|A. choanobasota

|

|2 right valves.{{Cite journal |last1=Kesling |first1=R. V. |last2=Weiss |first2=Martin |date=1953 |title=Ostracods from the Norway Point Formation of Michigan |hdl=2027.42/48276 |url=http://deepblue.lib.umich.edu/handle/2027.42/48276 |language=en-US}}

|

|

A. sp. A

|

|2 right valves.

|

|

A. sp. B

|

|A carapace, No. 29828.

|

|

rowspan="3" |Arcyzona

|A. aperticarinata

|

|

|

|

A. diademata

|

|A carapace and right valve.

|

|

A. sp.

|

|2 carapaces.

|

|

rowspan=3|Barychilina

|B. embrithes

|

|A left valve

|

|

B. labyrinthea

|

|A carapace.

|

|

B. sp.

|

|A left valve.

|

|

rowspan=2|Birdsallella

|B. delawarensis

|

|

|

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B. tumida

|

|

|

|

rowspan=3|Bythocypris

|B. devonica borealis

|

|A carapace.

|

|

B. parsonia

|

|A carapace.

|

|

B. subquadrata

|

|2 carapaces.

|

|

Coelonella

|C. scapha

|

|2 carapaces.

|

|

Ctenoloculina

|C. cicatricosa

|

|

|

|

Dizygopleura

|D. euglyphea

|

|A left valve.

|

|

rowspan="3" |Euglyphella

|E. compressa

|

|A right valve.

|

|

E. sigmoidalis

|

|

|

|

E. simplex

|

|

|

|

Eukloedenella

|E. doverensis

|

|One female left valve and one male left valve.

|

|

Falsipollex

|F. equipapillatus

|

|

|

|

Glyptopleura

|G. bipunctata

|

|

|

|

Halliella

|H. bellipuncta

|

|2 right valves.

|

|

rowspan="2" |Healdia

|H. gibba

|

|

|

|

H. sp.

|

|A right valve.

|

|

rowspan="6" |Hollinella

|H. ampla

|

|A left valve.

|

|

H. inclinisulcata

|

|

|

|

H. labrosa

|

|3 right valves.

|

|

H. tendilobata

|

|

|

|

H. sp. A

|

|"Two carapaces, Nos. 27352 and 27353".

|

|

H. sp. B

|

|"A male carapace, No. 27354".

|

|

Hyphasmaphora

|H. textiligera

|

|2 right valves.

|

|

rowspan="2" |Jenningsina

|J. catenulata

|

|

|

|

J. scalpta

|

|A left valve.

|

|

Lucasella

|L. mundula

|

|

|

|

Monoceratina

|M. casei

|

|"2 carapaces, Nos. 27374 and 27375".

|

|

rowspan="2" |Octonaria

|O. crescentiformis

|

|

|

|

O. quadricostata

|

|

|

|

Parabolbina

|P. acinina

|

|2 male right valves.

|

|

rowspan="2" |Ponderodictya

|P. punctulifera

|

|

|

|

P. sp.

|

|One specimen (No. 29891).

|May be an early instar of P. punctulifera.

|

Punctoprimitia

|P. subaequalis

|

|1 right valve and 4 left valves.

|

|

rowspan="6" |Quasillites

|Q. binodosus

|

|

|

|

Q. jubatus

|

|

|

|

Q. lobatus

|

|A right valve.

|

|

Q. obliquus

|

|A carapace.

|

|

Q. cf. Q. ornatus

|

|A carapace.

|

|

Q. ornatus

|

|3 carapaces and a right valve.

|

|

Reticestus

|R. acclivitatus

|

|

|

|

rowspan="2" |Ropolonellus

|R. papillatus

|

|A right valve.

|

|

R. plenus

|

|A right valve.

|

|

Ruptivelum

|R. bacculatum

|

|

|

|

rowspan="2" |Subligaculum

|S. biorthogonium

|

|

|

|

S. trullatum

|

|2 male left valves and a broken female right valve.

|

|

Tetrasacculus

|T. paeneloculatus

|

|

|

|

rowspan="2" |Ulrichia

|U. fragilis

|

|1 carapace and 2 left valves.

|

|

U. spinifera

|

|3 right valves.

|

|

class="wikitable" align="center"
colspan="6" align="center" | Trilobites
GenusSpeciesPresence

!Material

NotesImages
Dechenella

|D. (Basidechenella) sp. A

|

|"Nos. 25506, 28719, 28720, and 28721".{{Cite journal|last=Stumm|first=Erwin|date=1953|title=Trilobites of the Devonian Traverse Group of Michigan|url=https://deepblue.lib.umich.edu/bitstream/handle/2027.42/48269/ID108.pdf?sequence=2|journal=University of Michigan Press - Museum of Paleontology}}

|

|

Dipleura

|D. dekayi

|"Shales just above the Spinocyrtia zone".

|

|Also found in the Thunder Bay Limestone.

|File:Dipleura dekayi 2.jpg

Eldredgeops

|E. rana

|

|

|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.

|File:Phacops rana.jpg

Greenops

|G. aequituberculatus

|

|

|Also found in the Gravel Point Formation and Dock Street clay of the Four Mile Dam Formation.

|

style="background:#f3e9f3;" |Phacops

|style="background:#fbdddb;" |P. rana

|style="background:#fbdddb;" |

|style="background:#fbdddb;" |

|style="background:#fbdddb;" |Moved to the genus Eldredgeops.

|style="background:#fbdddb;" |

See also

{{Portal|Earth sciences|Michigan|Paleontology}}

References

{{reflist}}

  • {{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= ((Various Contributors to the Paleobiology Database))|url= https://www.fossilworks.org|access-date= 17 December 2021|df= dmy-all}}

{{Use dmy dates|date=April 2017}}

Category:Devonian Michigan

Category:Devonian southern paleotemperate deposits

{{Michigan-geologic-formation-stub}}