Silliman's Fossil Mount Brachiopods: Edenian - Maysvillian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Protorthida
- Skenidiidae
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? Skenidioides sp.
Schuchert and Cooper 1931
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Rhynchonellata
- Orthida
- Plaesiomyidae
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Plaesiomys meedsi
(Winchell and Schuchert 1892)
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| recombined as Dinorthis meedsi | ||||||||||
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Plaesiomys arctica
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| Plaesiomys meedsi arctica | ||||||||||
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Austinella subcircularis
Roy 1941
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| recombined as Plaesiomys subcircularis | ||||||||||
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Austinella aff. subcircularis
Roy 1941
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| recombined as Plaesiomys subcircularis | ||||||||||
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Austinella cooperi
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Rhynchonellata
- Orthida
- Glyptorthidae
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Glyptorthis bellarugosa
(Conrad 1843)
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Rhynchonellata
- Orthida
- Hesperorthidae
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Hesperorthis interplicata
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Rhynchonellata
- Orthida
- Platystrophiidae
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Platystrophia magnisulcata
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Rhynchonellata
- Orthida
- Plectorthidae
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Plectorthis inaequiconvexa
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Rhynchonellata
- Orthida
- Dalmanellidae
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Resserella sillimani
(Roy 1941)
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| original and current combination Dalmanella sillimani | ||||||||||
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? Resserella sp.
Bancroft 1928
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Resserella diminutiva
(Roy 1941)
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Rhynchonellata
- Atrypida
- Anazygidae
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Zygospira maynei
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Rhynchonellata
- Atrypida
- Cyclospiridae
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Cyclospira schucherti
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Cyclospira vokesi
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Rhynchonellata
- Rhynchonellida
- Rhynchotrematidae
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Lepidocyclus arcticus
(Roy 1941)
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| recombined as Hiscobeccus arcticus | ||||||||||
| Lepidocyclus capax arcticus | ||||||||||
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Lepidocyclus breve
(Roy 1941)
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| synonym of Hiscobeccus arcticus | ||||||||||
| Lepidocyclus anticostiense breve | ||||||||||
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Lepidocyclus sp.
Wang 1949
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Rhynchonellata
- Pentamerida
- Parastrophinidae
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Parastrophinella minor
(Roy 1941)
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| recombined as Parastrophina minor | ||||||||||
| Parastrophinella hemiplicata minor | ||||||||||
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Rafinesquina pronis
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Rafinesquina productiformis
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Rafinesquina sp.
Hall and Clarke 1892
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Rafinesquina declivis
(James 1874)
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Strophomenata
- Strophomenida
- Strophomenidae
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Strophomena undulosa
Roy 1941
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| recombined as Nasutimena undulosa | ||||||||||
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Strophomena spp.
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Thaerodonta sp.
Wang 1949
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| synonym of Eochonetes | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | Nunavut |
| Coordinates: | 63.7° North, 69.0° West (view map) | ||
| Paleocoordinates: | 10.9° South, 39.9° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| Stage: | Katian | 10 m.y. bin: | Ordovician 5 |
| *Period: | Middle Ordovician - Late/Upper Ordovician | *Local age/stage: | Richmondian |
| Key time interval: | Edenian - Maysvillian | ||
| Age range of interval: | 451.10000 - 449.80000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Amadjuak | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Sproat & Jin indicate that this might go up to the middle of the Maysvillian. | |||||
Lithology and environment
| Primary lithology: | dolomitic "limestone" |
| Secondary lithology: | calcareous "shale" |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: "Throughout the Mount, the top 50 feet of these beds consists of massive dolomite limestone, the next 75 feet of thin-bedded limestone and dolomite, and the lower 175 feet of calcareous shale with some interbedded limestone." | |
| Environment: | carbonate indet. |
| Geology comments: Environmental call by T. Hanson. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Taxonomic list comments:From Roy 1941. | |
Metadata
| Database number: | 24120 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2002-07-31 12:12:17 | Last modified: | 2018-03-08 16:56:33 |
| Access level: | the public | Released: | 2002-07-31 12:12:17 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 6817. | A. K. Miller, W. Youngquist, and C. Collinson. 1954. Ordovician cephalopod fauna of Baffin Island. Geological Society of America Memoir 62:1-234 [S. Holland/T. Hanson/T. Hanson] |