Peraspis fauna, Road River Fm., Llanvirn: Llanvirn, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Inarticulata
- Inarticulata
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Inarticulata indet.
Huxley 1869
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| invalid subgroup of Brachiopoda | ||||||||||
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Rhynchonellata
- Orthida
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Orthida indet.
Schuchert and Cooper 1932
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Agnostida
- Metagnostidae
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Arthrorhachis sp.
Hawle and Corda 1847
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| originally entered as "Arthrorachis sp." | ||||||||||
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Trilobita
- Asaphida
- Remopleurididae
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Blosyropsis sp.
Whittington 1965
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Trilobita
- Asaphida
- Asaphidae
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Niobe sp.
Angelin 1851
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Trilobita
- Asaphida
- Nileidae
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Peraspis sp.
Whittington 1965
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Nileus sp.
Dalman 1827
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Trilobita
- Trinucleida
- Raphiophoridae
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Globampyx sp.
Fortey 1975
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Trilobita
- Corynexochida
- Illaenidae
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Illaenus sp.
Dalman 1827
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Trilobita
- Phacopida
- Encrinuridae
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Cybelurus sp.
Levitsky 1962
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Trilobita
- Phacopida
- Calymenidae
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Protocalymene sp.
Ross and Barnes 1967
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| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | Yukon |
| Coordinates: | 62.8° North, 136.6° West (view map) | ||
| Paleocoordinates: | 17.2° North, 76.5° West | ||
| Basis of coordinate: | based on political unit |
Time
| Period: | Ordovician | Epoch: | Middle Ordovician |
| 10 m.y. bin: | Ordovician 2-3 | *Epoch: | Llanvirn |
| Key time interval: | Llanvirn | ||
| Age range of interval: | 468.40000 - 458.40000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Road River |
Lithology and environment
| Primary lithology: | black argillaceous lime mudstone |
| Environment: | slope |
| Geology comments: "black argillaceous lime mudstone and shales" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Taxonomic list comments:"R.Ludvigsen 1981. Biostrat. significance of M.Ord. trilobites from the Road River Fm., northern Cordillera. Geol.Assoc.Canada Abstracts 6:A-36." [trilobites only, 1 brach] | |
Metadata
| Database number: | 302 | ||
| Authorizer: | J. Sepkoski | Enterer: | M. Sommers |
| Modifier: | J. Ju | Research group: | marine invertebrate |
| Created: | 1998-11-20 10:07:18 | Last modified: | 2017-01-07 19:11:15 |
| Access level: | the public | Released: | 1998-11-20 10:07:18 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 61157. | R. Ludvigsen. 1981. Biostratigraphy significance of Middle Ordovician trilobites from the Road River Formation, northern Cordillera. Geological Association of Canada Abstracts 6:A-36 [M. Uhen/J. Ju/J. Ju] |