Rockport Quarry Limestone | |
---|---|
Stratigraphic range: | |
Type | Geological formation |
Unit of | Traverse Group |
Underlies | Ferron Point Formation [1] |
Overlies | Bell Shale [1] [2] |
Thickness | Approximately 14 meters [2] |
Location | |
Region | ![]() |
Country | ![]() |
The Rockport Quarry Limestone is a geologic formation in Michigan. It preserves fossils dating back to the middle Devonian period.
Color key
|
Notes Uncertain or tentative taxa are in small text; |
The Devonian vertebrate fauna of the Rockport Quarry Limestone is the most diverse in Michigan. [1]
Acanthodians reported from the Rockport Quarry Limestone | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
? Machaeracanthus | ?M. sp. | A single specimen (UMMP 13047). [1] |
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 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. | ||
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. | ![]() |
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. | ||
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 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] | |||
Species B | [2] |
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 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 reported from the Rockport Quarry Limestone | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Cephalopoda | "All specimens collected as single-hand specimens". [2] | ||||
Gastropoda | [2] |
Sponges reported from the Rockport Quarry Limestone | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Clathrodictyidae | [2] | ||||
Idiostromatidae | [2] | ||||
Stromatoporidae | [2] |
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 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] | |||
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 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 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] |
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Rockport Quarry Limestone | |
---|---|
Stratigraphic range: | |
Type | Geological formation |
Unit of | Traverse Group |
Underlies | Ferron Point Formation [1] |
Overlies | Bell Shale [1] [2] |
Thickness | Approximately 14 meters [2] |
Location | |
Region | ![]() |
Country | ![]() |
The Rockport Quarry Limestone is a geologic formation in Michigan. It preserves fossils dating back to the middle Devonian period.
Color key
|
Notes Uncertain or tentative taxa are in small text; |
The Devonian vertebrate fauna of the Rockport Quarry Limestone is the most diverse in Michigan. [1]
Acanthodians reported from the Rockport Quarry Limestone | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
? Machaeracanthus | ?M. sp. | A single specimen (UMMP 13047). [1] |
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 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. | ||
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. | ![]() |
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. | ||
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 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] | |||
Species B | [2] |
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 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 reported from the Rockport Quarry Limestone | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Cephalopoda | "All specimens collected as single-hand specimens". [2] | ||||
Gastropoda | [2] |
Sponges reported from the Rockport Quarry Limestone | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Clathrodictyidae | [2] | ||||
Idiostromatidae | [2] | ||||
Stromatoporidae | [2] |
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 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] | |||
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 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 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] |
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cite journal}}
: Cite journal requires |journal=
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help)
{{
cite journal}}
: CS1 maint: DOI inactive as of January 2024 (
link)
{{
cite journal}}
: Cite journal requires |journal=
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help)
{{
cite journal}}
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