Rockport Quarry Limestone

Rockport Quarry Limestone
Rockport Quarry Limestone
Stratigraphic range: Middle Devonian (Givetian) PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Unit of	Traverse Group
Underlies	Ferron Point Formation
Overlies	Bell Shale
Thickness	Approximately 14 meters
Location
Region	Michigan
Country	United States

Last updated March 08, 2024

The Rockport Quarry Limestone is a geologic formation in Michigan. It preserves fossils dating back to the middle Devonian period.

Fossil content

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.

Vertebrates

The Devonian vertebrate fauna of the Rockport Quarry Limestone is the most diverse in Michigan.^[1]

Acanthodians

Acanthodians reported from the Rockport Quarry Limestone
Genus	Species	Presence	Material	Notes	Images
?Machaeracanthus	?M. sp.		A single specimen (UMMP 13047).^[1]

Cartilaginous fish

Cartilaginous fish reported from the Rockport Quarry Limestone
Genus	Species	Presence	Material	Notes	Images
Phoebodus	P. cf. P. sophiae	Alpena, Michigan.^[3]	A tooth.^[3]	An early elasmobranch.
?Tamiobatis	?T. sp.	"At the abandoned Kelly Island Limestone Quarry at Rockport State Park, Alpena County".^[1]	A single small spine (UMMP 13147).^[1]	A ctenacanthoid.

Placoderms

Placoderms reported from the Rockport Quarry Limestone
Genus	Species	Presence	Material	Notes	Images
Dinomylostoma	D. sp.		^[1]	An arthrodire.
Dunkleosteus	D. sp.	Rockport Quarry, Alpena County.^[1]	A single incomplete right anterior ventrolateral (UMMP 16152).^[1]	An arthrodire.
Holonema	?H. rugosum		A single specimen (UMMP 3898).^[1]	An arthrodire.
Holonema	H. sp.		26 specimens.^[1]	An arthrodire.
Mylostoma	M. sp.		A single specimen (UMMP 13612).^[1]	An arthrodire.
Placodermi		At the abandoned Kelly Island Limestone Quarry at Rockport State Park, Alpena County.^[1]	2 specimens (7M, VP. 522.)^[1]	Placoderms of unknown affinity.
Protitanichthys	P. rockportensis		59 specimens.^[1]	An arthrodire.
Ptyctodus	P. sp.		A single specimen (UMMP 13045).^[1]	A ptyctodontid.

Invertebrates

Brachiopods

Brachiopods reported from the Rockport Quarry Limestone
Genus	Species	Presence	Material	Notes	Images
Chonetes	C. mediolatus		^[4]	Also found in the Bell Shale, Ferron Point Formation and St. Laurent Limestone.
Pentamerella	P. sp. B	Basal 8 inches of the formation.^[4]	2 specimens.^[4]
Pholidostrophia	P. gracilis gracilis		^[4]	Also found in the Bell, Ferron Point and Genshaw formations.
Schizophoria	S. ferronensis	Basal 8 inches of the formation.^[4]		Also found in the Bell Shale, Ferron Point Formation and Silica Shale.
Schuchertella	S. crassa		^[4]	Also found in the lower Bell Shale, Ferron Point Formation and Arkona Shale.
Spinulicosta	S. mutocosta		^[4]	Also found in the Bell, Ferron Point, Four Mile Dam, Beebe School, Thunder Bay and Potter Farm formations.
Strophodonta	S. extenuata rockportensis	Lower 8 inches of the formation.^[4]
Tylothyris	T. rockportensis		^[5]	Appears to be endemic to the Michigan Basin.
Tylothyris	T. subvaricosa		^[5]	Also found in the Cedar Valley, Milwaukee, Mineola, Bell, Ferron Point, Genshaw, Alpena, Gravel Point, Norway Point and Potter Farm formations.

Bryozoans

Bryozoans reported from the Rockport Quarry Limestone
Genus	Species	Presence	Material	Notes	Images
Fenestellidae	Species A		^[2]
	Species B		^[2]
	Species C		^[2]
Trepostomata	Species A		^[2]
Trepostomata	Species B		^[2]

Crustaceans

Crustaceans reported from the Rockport Quarry Limestone
Genus	Species	Presence	Material	Notes	Images
Ostracoda			^[2]
Phlyctiscapha	P. rockportensis	Basal part of the formation.^[6]		An ostracod.

Echinoderms

Echinoderms reported from the Rockport Quarry Limestone
Genus	Species	Presence	Material	Notes	Images
Crinoidea			"Observed as disaggregated ossicles, ossicles stacked en echellon, and fragments of columnals".^[2]

Molluscs

Molluscs reported from the Rockport Quarry Limestone
Genus	Species	Presence	Material	Notes	Images
Cephalopoda			"All specimens collected as single-hand specimens".^[2]
Gastropoda			^[2]

Sponges

Sponges reported from the Rockport Quarry Limestone
Genus	Species	Presence	Material	Notes	Images
Clathrodictyidae			^[2]
Idiostromatidae			^[2]
Stromatoporidae			^[2]

Trilobitomorphs

Trilobitomorphs reported from the Rockport Quarry Limestone
Genus	Species	Presence	Material	Notes	Images
Trilobitomorpha		200 m south of the large sinkhole on the west wall of Rockport Quarry.^[2]

Plants and algae

Plants and algae reported from the Rockport Quarry Limestone
Genus	Species	Presence	Material	Notes	Images
Calcisphera	C. sp. A	"Abandoned quarry of the Onaway Limestone Company on the shore of Black Lake".^[2]
Calcisphera	C. sp. B	"Abandoned quarry of the Onaway Limestone Company on the shore of Black Lake".^[2]
Rhodophyta	Indeterminate	200 m south of the large sinkhole on the west wall of Rockport Quarry.^[2]
Vermiporella			"Observed as transverse sections, most specimens now irregular in shape due to crushing".^[2]

Cyanophytes

Cyanophytes reported from the Rockport Quarry Limestone
Genus	Species	Presence	Material	Notes	Images
Genus and species indeterminate	Indeterminate		"Spherical bodies 3-5 microns in diameter".^[2]
Oncolite				"Some post-depositional crushing of the sample has occurred".^[2]
Renalcis		"Abandoned quarry of the Onaway Limestone Company on the shore of Black Lake".^[2]

Foraminifera

Foraminifera reported from the Rockport Quarry Limestone
Genus	Species	Presence	Material	Notes	Images
Family indet.			"Found sparsely as solitary individuals in 6 specimens".^[2]
Nodosinellidae			^[2]

Related Research Articles

The Hunsrück Slate is a Lower Devonian lithostratigraphic unit, a type of rock strata, in the German regions of the Hunsrück and Taunus. It is a lagerstätte famous for exceptional preservation of a highly diverse fossil fauna assemblage.

The Hamilton Group is a Devonian-age geological group which is located in the Appalachian region of the United States. It is present in New York, Pennsylvania, Maryland, Ohio, West Virginia, northwestern Virginia and Ontario, Canada, and is mainly composed of marine shale with some sandstone.

<span class="mw-page-title-main">Marcellus Formation</span> Middle Devonian age unit of sedimentary rock

The Marcellus Formation or the Marcellus Shale is a Middle Devonian age unit of sedimentary rock found in eastern North America. Named for a distinctive outcrop near the village of Marcellus, New York, in the United States, it extends throughout much of the Appalachian Basin.

Mildred Adams Fenton trained in paleontology and geology at the University of Iowa. She coauthored dozens of general science books with her husband, Carroll Lane Fenton, including Records of Evolution (1924), Land We Live On (1944), and Worlds in the Sky (1963).

Synziphosurina is a paraphyletic group of chelicerate arthropods previously thought to be basal horseshoe crabs (Xiphosura). It was later identified as a grade composed of various basal euchelicerates, eventually excluded form the monophyletic Xiphosura sensu stricto and only regarded as horseshoe crabs under a broader sense. Synziphosurines survived at least since early Ordovician to early Carboniferous in ages, with most species are known from the in-between Silurian strata.

Paleontology or palaeontology is the study of prehistoric life forms on Earth through the examination of plant and animal fossils. This includes the study of body fossils, tracks (ichnites), burrows, cast-off parts, fossilised feces (coprolites), palynomorphs and chemical residues. Because humans have encountered fossils for millennia, paleontology has a long history both before and after becoming formalized as a science. This article records significant discoveries and events related to paleontology that occurred or were published in the year 2012.

Paleontology in Wisconsin refers to paleontological research occurring within or conducted by people from the U.S. state of Wisconsin. The state has fossils from the Precambrian, much of the Paleozoic, some a parts of the Mesozoic and the later part of the Cenozoic. Most of the Paleozoic rocks are marine in origin. Because of the thick blanket of Pleistocene glacial sediment that covers the rock strata in most of the state, Wisconsin’s fossil record is relatively sparse. In spite of this, certain Wisconsin paleontological occurrences provide exceptional insights concerning the history and diversity of life on Earth.

Paleontology in Oklahoma refers to paleontological research occurring within or conducted by people from the U.S. state of Oklahoma. Oklahoma has a rich fossil record spanning all three eras of the Phanerozoic Eon. Oklahoma is the best source of Pennsylvanian fossils in the United States due to having an exceptionally complete geologic record of the epoch. From the Cambrian to the Devonian, all of Oklahoma was covered by a sea that would come to be home to creatures like brachiopods, bryozoans, graptolites and trilobites. During the Carboniferous, an expanse of coastal deltaic swamps formed in areas of the state where early tetrapods would leave behind footprints that would later fossilize. The sea withdrew altogether during the Permian period. Oklahoma was home a variety of insects as well as early amphibians and reptiles. Oklahoma stayed dry for most of the Mesozoic. During the Late Triassic, carnivorous dinosaurs left behind footprints that would later fossilize. During the Cretaceous, however, the state was mostly covered by the Western Interior Seaway, which was home to huge ammonites and other marine invertebrates. During the Cenozoic, Oklahoma became home to creatures like bison, camels, creodonts, and horses. During the Ice Age, the state was home to mammoths and mastodons. Local Native Americans are known to have used fossils for medicinal purposes. The Jurassic dinosaur Saurophaganax maximus is the Oklahoma state fossil.

The Willwood Formation is a sedimentary sequence deposited during the late Paleocene to early Eocene, or Clarkforkian, Wasatchian and Bridgerian in the NALMA classification.

Protitanichthys is an extinct genus of comparatively large coccosteid arthrodire placoderms from the Middle Devonian of the eastern United States. Fossils are found primarily in the Eifelian-epoch aged Delaware Limestone of Ohio, and the Lower Givetian-aged Rockport Quarry Limestone of Michigan

The Traverse Group is a geologic group in Michigan, Indiana and Ohio comprising middle Devonian limestones with calcareous shale components. Its marine fossils notably include Michigan's state stone, the Petoskey stone, among other corals and records of ancient marine life. A range of trilobites has also been found in the Traverse Group.

The Four Mile Dam Formation, also called the Four Mile Dam Limestone, is a geologic formation in Michigan. It preserves fossils dating back to the middle Devonian period.

The Gravel Point Formation is a geologic formation in western Michigan. It preserves fossils dating back to the middle Devonian period and correlates with the Long Lake Limestone and Alpena Limestone.

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

The Thunder Bay Limestone is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.

The Valentine Formation is a geologic unit formation or member within the Ogallala unit in northcentral Nebraska near the South Dakota border. It preserves fossils dating to the Miocene epoch of the Neogene period and is particularly noted for Canid fossils. This unit consists of loosely-consolidated sandstone that crumbles easily. These sands carry the water of the Ogallala Aquifer and is the source of much of the water in the Niobrara River. A particular feature of the Valentine is lenticular beds of green-gray opaline sandstone that can be identified in other states, including South Dakota, Nebraska, Kansas, and Colorado. Although three mammalian fauna stages can be mapped throughout the range of the Ogallala, no beddings of the Ogallala are mappable and all attempts of formally applying the Valentine name to any mappable lithology beyond the type location have been abandoned. Even so, opaline sandstone has been used to refer to this green-gray opalized conglomerate sandstone that is widely found in the lower Ogallala Formation.

This list of fossil fish described in 2018 is a list of new taxa of jawless vertebrates, placoderms, acanthodians, fossil cartilaginous fish, bony fish, and other fish of every kind that are scheduled to be described during the year 2018, as well as other significant discoveries and events related to paleontology of fish that are scheduled to occur in 2018.

The Bokkeveld Group is the second of the three main subdivisions of the Cape Supergroup in South Africa. It overlies the Table Mountain Group and underlies the Witteberg Group. The Bokkeveld Group rocks are considered to range between Lower Devonian (Lochkovian) to Middle Devonian (Givetian) in age.

The Sarmiento Formation, in older literature described as the Casamayor Formation, is a geological formation in Chubut Province, Argentina, in central Patagonia, which spans around 30 million years from the mid-Eocene to the early Miocene. It predominantly consists of pyroclastic deposits, which were deposited in a semi-arid environment. It is divided up into a number of members. The diverse fauna of the Sarmiento Formation, including a variety of birds, crocodilians, turtles and snakes, also includes many mammals such as South American native ungulates as well as armadillos, and caviomorph rodents.

References

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 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.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Cookman, C. W. (1976). "Petrology of the Rockport Quarry Limestone (Middle Devonian Traverse Group) Alpena, Presque Isle and Montmorency Counties, Michigan". S2CID 130419618.{{cite journal}}: Cite journal requires |journal= (help)
1 2 Swinehart, Anthony L.; Hoenig, Matthew M. J.; Ginter, Michal (July 2020). "A New Addition to the Devonian Elasmobranch Fauna of Michigan, U.S.A." The American Midland Naturalist. 184 (1): 109–115. doi:10.1637/0003-0031-184.1.109 (inactive 31 January 2024). ISSN 0003-0031.{{cite journal}}: CS1 maint: DOI inactive as of January 2024 (link)
1 2 3 4 5 6 7 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)
1 2 Rogers, Frederick S.; Pitrat, Charles W. (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. JSTOR 1305304. S2CID 130922140.
↑ Kesling, R. V. (1953). "A New Beyrichiid Ostracod from the Middle Devonian Rockport Quarry Limestone of Michigan". S2CID 127104889.{{cite journal}}: Cite journal requires |journal= (help)

This article about a specific stratigraphic formation in Michigan is a stub. You can help Wikipedia by expanding it.

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.

[:0-1] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 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] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Cookman, C. W. (1976). "Petrology of the Rockport Quarry Limestone (Middle Devonian Traverse Group) Alpena, Presque Isle and Montmorency Counties, Michigan". S2CID 130419618.{{cite journal}}: Cite journal requires |journal= (help)

[:3-3] 1 2 Swinehart, Anthony L.; Hoenig, Matthew M. J.; Ginter, Michal (July 2020). "A New Addition to the Devonian Elasmobranch Fauna of Michigan, U.S.A." The American Midland Naturalist. 184 (1): 109–115. doi:10.1637/0003-0031-184.1.109 (inactive 31 January 2024). ISSN 0003-0031.{{cite journal}}: CS1 maint: DOI inactive as of January 2024 (link)

[:1-4] 1 2 3 4 5 6 7 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)

[:4-5] 1 2 Rogers, Frederick S.; Pitrat, Charles W. (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. JSTOR 1305304. S2CID 130922140.

[6] Kesling, R. V. (1953). "A New Beyrichiid Ostracod from the Middle Devonian Rockport Quarry Limestone of Michigan". S2CID 127104889.{{cite journal}}: Cite journal requires |journal= (help)

[1]

[2]

[3]

[4]

[5]

[6]