Bobcaygeon Fm., Brechin Quarry, Table D11: Caradoc, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Crinoidea
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Crinoidea indet.
Miller 1821
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8 specimens | ||||||
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Asteroidea
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Asteroidea indet.
de Blainville 1830
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3 specimens | ||||||
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Stenolaemata
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Stenolaemata indet.
Borg 1926
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17 specimens | ||||||
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Rhynchonellata
- Atrypida
- Anazygidae
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Zygospira sp.
Hall 1862
|
40 specimens | ||||||
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Rhynchonellata
- Orthida
- Dalmanellidae
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Dalmanella sp.
Hall and Clarke 1892
|
302 specimens | ||||||
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Rhynchonellata
- Orthida
- Platystrophiidae
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Platystrophia sp.
King 1850
|
3 specimens | ||||||
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Rhynchonellata
- Orthida
- Plaesiomyidae
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? Plaesiomys sp.
Hall and Clarke 1892
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3 specimens | ||||||
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Rhynchonellata
- Rhynchonellida
- Rhynchotrematidae
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Rhynchotrema sp.
Hall 1860
|
21 specimens | ||||||
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Strophomenata
- Strophomenida
- Sowerbyellidae
|
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Sowerbyella sp.
Jones 1928
|
114 specimens | ||||||
|
Strophomenata
- Strophomenida
- Furcitellidae
|
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|
? Oepikina sp.
(Salmon 1942)
|
87 specimens | ||||||
| original and current combination Opikina | |||||||
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Rafinesquina sp.
Hall and Clarke 1892
|
1 specimen | ||||||
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Lingulata
- Lingulida
- Lingulidae
|
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Lingula sp.
Bruguiére 1797
|
1 specimen | ||||||
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Craniata
- Craniopsida
- Craniopsidae
|
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Craniops sp.
Hall 1859
|
1 specimen | ||||||
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Gastropoda
- Murchisoniina
- Lophospiridae
|
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? Lophospira sp.
Whitfield 1886
|
3 specimens | ||||||
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Ostracoda
- Leperditicopida
|
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Leperditicopida indet.
Scott 1961
|
1 specimen | ||||||
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Trilobita
- Asaphida
- Asaphidae
|
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Isotelus sp.
Dekay 1824
|
1 specimen | ||||||
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Trilobita
- Phacopida
- Cheiruridae
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Ceraurus sp.
Green 1832
|
2 specimens | ||||||
| see common names | |||||||
Geography
| Country: | Canada | State/province: | Ontario |
| Coordinates: | 44.5° North, 79.2° West (view map) | ||
| Paleocoordinates: | 24.8° South, 55.1° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| Key time interval: | Caradoc | ||
| Age range of interval: | 458.40000 - 449.60000 m.y. ago |
Stratigraphy
| Formation: | Bobcaygeon |
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | gray lithified argillaceous packstone | ||
| Secondary lithology: | lithified mudstone | ||
| Environment: | deep subtidal indet. | Tectonic setting: | cratonic basin |
Taphonomy
| Modes of preservation: | body |
| Preservation of anatomical detail: | excellent |
| Abundance in sediment: | common |
| Articulated whole bodies: | many |
| Associated major elements: | many |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | surface (float),field collection |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: sample is from an active quarry, so large blocks were surveyed from blast piles | |
Metadata
| Database number: | 64478 | ||
| Authorizer: | S. Peters | Enterer: | S. Peters | Research group: | marine invertebrate |
| Created: | 2006-09-09 09:20:53 | Last modified: | 2024-03-31 19:20:47 |
| Access level: | the public | Released: | 2006-09-09 09:20:51 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 13544. | S. E. Peters. 2003. Evenness, richness and the Cambrian-Paleozoic faunal transition in North America: an assemblage-level perspective. The University of Chicago 1-279 [S. Peters/S. Peters/P. Wagner] |