List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Anthozoa
- Favositida
- Micheliniidae
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Pleurodictyum sp.
Goldfuss 1829
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Anthozoa
- Rugosa
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Rugosa indet.
Milne-Edwards and Haime 1850
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Crinoidea
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Crinoidea indet.
Miller 1821
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Bivalvia
- Cyrtodontida
- Antipleuridae
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Bivalvia
- Nuculida
- Cardiolariidae
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Bivalvia
- Solemyida
- Ctenodontidae
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Ctenodonta sp.
Salter 1852
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Bivalvia
- Afghanodesmatida
- Similodontidae
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Bivalvia
- Nuculanida
- Cucullellidae
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Cephalopoda
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Nautiloidea indet.
Agassiz 1847
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| orthocones | ||||||||||
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Gastropoda
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Pleurotomariacea indet.
Swainson 1840
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| Wagner 2023 | ||||||||||
| was Pleurotomariacea indet. | ||||||||||
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Gastropoda
- Murchisoniina
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| Wagner 2023 | ||||||||||
| was Murchisoniacea indet. | ||||||||||
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Loxonematacea indet.
Koken 1889
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= Loxonematoidea indet.
Koken 1889
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Wagner 2023 | |||||||||
| was Loxonematacea indet. | ||||||||||
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Gastropoda
- Bellerophontida
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| Wagner 2023 | ||||||||||
| was Bellerophontacea indet. | ||||||||||
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unclassified
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Strophomenata
- Strophomenida
- Strophochonetidae
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? Protochonetes sp.
Muir-Wood 1962
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Rhynchonellata
- Rhynchonellida
- Leptocoeliidae
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Harringtonina sp.
Boucot 1972
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Rhynchonellata
- Rhynchonellida
- Eatoniidae
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Rhynchonellata
- Orthida
- Heterorthidae
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Hyolithida
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Hyolithida indet.
Mathew 1962
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Artiopoda
- Odontopleurida
- Odontopleuridae
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Anacaenaspis sp.
Bruton 1967
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| see common names | ||||||||||
Geography
| Country: | Argentina |
| Coordinates: | 24.0° South, 65.0° West (view map) |
| Paleocoordinates: | 71.6° South, 174.5° East (Wright 2013) |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | local area |
Stratigraphy
| Formation: | Lipeon |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | bioturbation,ferruginous,micaceous,gray siltstone |
| Secondary lithology: | "cross stratification" sandstone |
| Lithology description: "Lipeon Formation ranges in thickness from 600 to 800 m. It consists of a monotonous sequence of fine-grained sandstones and siltstones. The lower half of the unit is composed of yellowish, fine-grained, micaceous sandstones...Near the base are several hematitic beds...Ferruginous concretions throughout the formation...extensive bioturbation...trace fossils common. The upper half [relevant here] consists of about 350 m of bioturbated, dark gray, micaceous siltstones. The lower part of this member is richly fossiliferous. Toward the top of the formation there is a progressive increase in the percentage of sands, and discrete sandstone beds are interbedded with the siltstones. These beds show occasional flaser bedding and small-scale ripple cross lamination." | |
| Environment: | marine indet. |
| Geology comments: "offshore, quiet water, below wave base. Dark color and pyritic concretions suggest periodic restrictions in oxygen. Zoophycos may reflect muddy bottom rich in organics and partly anoxic. Sandstone beds toward the top indicate shallower, nearshore encironment affected by wave base." BA 3 (Boucot et al. 1999-PBDB ref. 7007) | |
Taphonomy
Collection methods and comments
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: Interval 21 and 38, Table 6. | |
Metadata
| Also known as: | Ancillotoechia Association | ||
| Database number: | 25061 | ||
| Authorizer: | M. Foote, P. Wagner | Enterer: | M. Foote, P. Wagner |
| Modifier: | M. Foote | Research group: | marine invertebrate |
| Subset of collection #: | 25062 | ||
| Created: | 2002-08-27 11:21:32 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2002-08-27 11:21:32 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 7023. | T. M. Sanchez, B. G. Waisfeld, and J. L. Benedetto. 1991. Lithofacies, taphonomy, and brachiopod assemblages in the Silurian of western Argentina: A review of Malvinokaffric Realm communities. Journal of South American Earth Sciences 4(4):307-329 [M. Foote/M. Foote/O. Alfaro] |
Secondary references:
| 9042 | P. J. Wagner. 2023. Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023). [P. Wagner/P. Wagner/P. Wagner] |