Bobcaygeon Fm., Brechin Quarry, Table D10: Caradoc, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Asteroidea
|
|||||||
|
Asteroidea sp.
de Blainville 1830
|
2 specimens | ||||||
|
Crinoidea
|
|||||||
|
Crinoidea indet.
Miller 1821
|
3 specimens | ||||||
|
Rhombifera
|
|||||||
|
Rhombifera indet.
Zittel 1879
|
1 specimen | ||||||
|
Strophomenata
- Strophomenida
- Sowerbyellidae
|
|||||||
|
Sowerbyella sp.
Jones 1928
|
29 specimens | ||||||
|
Strophomenata
- Strophomenida
- Rafinesquinidae
|
|||||||
|
Rafinesquina sp.
Hall and Clarke 1892
|
66 specimens | ||||||
|
Rhynchonellata
- Atrypida
- Cyclospiridae
|
|||||||
|
? Cyclospira sp.
Hall and Clarke 1893
|
2 specimens | ||||||
|
Rhynchonellata
- Atrypida
- Anazygidae
|
|||||||
|
Zygospira sp.
Hall 1862
|
44 specimens | ||||||
|
Rhynchonellata
- Orthida
|
|||||||
|
Orthida indet.
Schuchert and Cooper 1932
|
4 specimens | ||||||
|
Rhynchonellata
- Orthida
- Dalmanellidae
|
|||||||
|
Dalmanella sp.
Hall and Clarke 1892
|
209 specimens | ||||||
|
Rhynchonellata
- Orthida
- Plaesiomyidae
|
|||||||
|
? Plaesiomys sp.
Hall and Clarke 1892
|
3 specimens | ||||||
|
Stenolaemata
|
|||||||
|
Stenolaemata sp.
Borg 1926
|
18 specimens | ||||||
|
Gastropoda
- Murchisoniina
- Lophospiridae
|
|||||||
|
? Lophospira sp.
Whitfield 1886
|
4 specimens | ||||||
|
Ostracoda
- Leperditicopida
|
|||||||
|
Leperditicopida indet.
Scott 1961
|
2 specimens | ||||||
|
Trilobita
- Corynexochida
- Illaenidae
|
|||||||
|
Nanillaenus sp.
Jaanusson 1954
|
1 specimen | ||||||
|
Bumastoides sp.
(Whittington 1954)
|
2 specimens | ||||||
|
Trilobita
- Phacopida
- Calymenidae
|
|||||||
|
Flexicalymene sp.
Shirley 1936
|
1 specimen | ||||||
|
Trilobita
- Phacopida
- Pterygometopidae
|
|||||||
|
Calyptaulax sp.
Cooper 1930
|
2 specimens | ||||||
|
Trilobita
- Phacopida
- Cheiruridae
|
|||||||
|
Ceraurus sp.
Green 1832
|
5 specimens | ||||||
|
Anthozoa
- Favositida
- Favositidae
|
|||||||
|
Favositidae indet.
Dana 1846
|
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: | 64477 | ||
| Authorizer: | S. Peters | Enterer: | S. Peters |
| Modifier: | S. Peters | Research group: | marine invertebrate |
| Created: | 2006-09-09 08:48:31 | Last modified: | 2024-03-31 19:20:47 |
| Access level: | the public | Released: | 2006-09-09 08:48:31 |
| 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] |