near Consata: Darriwilian, Bolivia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Pterobranchia
- Graptoloidea
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Pseudamplexograptus latus
Bulman 1931
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Pterobranchia
- Graptoloidea
- Isograptidae
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Parisograptus caduceus
(Salter and Bigby 1853)
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Pterobranchia
- Graptoloidea
- Glossograptidae
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Cryptograptus schaeferi
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Pterobranchia
- Graptoloidea
- Tetragraptidae
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Pseudotrigonograptus sp.
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Pterobranchia
- Graptoloidea
- Dichograptidae
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Didymograptus sp.
McCoy 1851
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Didymograptus cf. murchisoni
(Beck 1839)
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| original and current combination Graptolithus murchisonii | |||||||
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Pterobranchia
- Graptoloidea
- Climacograptidae
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Oelandograptus oelandicus
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Pterobranchia
- Graptoloidea
- Diplograptidae
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Hustedograptus bulmani
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Pterobranchia
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Thamnograptus ? sp.
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| nomen vanum belonging to Graptolithina | |||||||
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Rhynchonellata
- Orthida
- Heterorthidae
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Tissintia sp.
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Trilobita
- Phacopida
- Homalonotidae
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Huemacaspis teopontensis
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Trilobita
- Trinucleida
- Trinucleidae
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Incaia nordenskioeldi
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Trilobita
- Asaphida
- Asaphidae
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Hoekaspis yahuari
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Hoekaspis sp.
Kobayashi 1937
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| see common names | |||||||
Geography
| Country: | Bolivia |
| Coordinates: | 15.5° South, 68.6° West (view map) |
| Paleocoordinates: | 46.3° South, 121.8° West |
| Basis of coordinate: | stated in text |
| Geographic resolution: | local area |
Time
| Period: | Ordovician | Epoch: | Middle Ordovician |
| Stage: | Darriwilian | 10 m.y. bin: | Ordovician 3 |
| Key time interval: | Darriwilian | Graptolite zone: | Archiclimacograptus decoratus |
| Age range of interval: | 467.30000 - 458.40000 m.y. ago |
Stratigraphy
| Formation: | Coroico | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Archiclimacograptus decoratus zone. Da2-Da3; given as Llanvirn elsewhere. | |||||
Lithology and environment
| Primary lithology: | black siltstone |
| Environment: | deep subtidal indet. |
| Geology comments: black siltstones intercalated with thin beds of siltstone. The Coroico Formation crops out primarily in the core of broad anticlinal structures and comprises mainly black siltstones. The base of the sequence is not exposed. The lower most strata are fine brownish sandstones with horizontal lamination that grade upward into carbonaceous siltstones and fine gained sandstones. The unit coarsens upward and grades into the more sand-rich Amutara Formation. Shelly fossils are rare and are principally the trilobites | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils,microfossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 145517 | ||
| Authorizer: | W. Kiessling | Enterer: | M. Krause |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2013-06-04 23:11:34 | Last modified: | 2019-10-10 14:48:59 |
| Access level: | the public | Released: | 2013-06-04 23:11:34 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 47041. | C. Mitchell, E. D. Brussa, and J. Maletz. 2008. A mixed Isograptid-Didymograptid Graptolite assemblage from the Middle Ordovician of West Gondwana (NW Bolivia): implications for Graptolite Paleoecology. Journal of Paleontology 82(6):1114-1126 [W. Kiessling/M. Krause] |