Icla Formation
Geologic formation in Bolivia
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The Icla Formation is an early Devonian formation from Bolivia. It preserves a moderately diverse fauna of trilobites, brachiopods, crinoids and a few species of jawed fish.
| Icla Formation | |
|---|---|
| Stratigraphic range: Pragian - Emsian | |
| Type | Geological formation |
| Underlies | Huamampampa Formation |
| Overlies | Santa Rosa Formation |
| Location | |
| Region | Sub-alpine region |
| Country | Bolivia |
Paleobiota
Color key
|
Notes Uncertain or tentative taxa are in small text; |
| Paleobiota | |||||
|---|---|---|---|---|---|
| Genus | Species | Higher taxon | Notes | Images | |
| Ramirosuarezia | R. boliviana | Gnathostomata | Resembles a mix of gnathostome groups, may be the same as Zamponiopteron[1] | ||
| Pucapampella | P. rodrigae | Stem-Chondrichthyes | Also known from the Belèn Formation, one of the most basal known cartilaginous fish[2] |  | |
| Meperocrinus | M. angelina | Emperocrinidae (Camerata) | Has unusual wing-shaped extensions of its calyx[3] | ||
| Nuculites | N. beneckei, N. oblongatus[4] | Malletiidae | |||
| Palaeoneilo | P. rhysa?[4] | Malletiidae | |||
| Phestia | P. inornata?[4] | Nuculanidae | |||
| Bolitheca | B. steinmanni | Orthothecida[5] | |||
| Protoleptostrophia | P. concinna | Stropheodontidae (Strophomenoidea)[6] | |||
| Schuchertella | S. sp? | Schuchertellidae (Orthotetida)[6] | |||
| Australostrophia | A. mesembrina | Chonostrophiidae (Chonetidina)[6] | |||
| Pleurochonetes | P. anteloi, P. lauriata | Chonetidae (Chonetidina)[6] | P. anteloi was formerly placed in its own genus (Gamonetes) before being synonymised[7] | ||
| Notiochonetes | N. falklandica | Chonetidae (Chonetidina)[6] | |||
| Kentronetes | K. iclaense[8] | Chonetidina | Formerly included in Quadrikentron, but split out into its own genus[9] | ||
| Antelocoelia | A. johnsoni | Leptocoeliidae (Rhynchonellida)[10] | |||
| Australocoelia | A. palmata | Leptocoeliidae (Rhynchonellida)[10] | |||
| Meristelloides | M. rikowskii | Meristellidae (Athyridida)[10] | |||
| Australospirifer | A. hawkinsi | Delthyrididae (Spiriferida)[10] | |||
| Metaplasia | M. pseudoumbonata | Ambocoeliidae (Spiriferida)[10] | |||
| Plicoplasia | P. planoconvexa | Ambocoeliidae (Spiriferida)[10] | |||
| Proboscidina | P. arcei | Centronellidae (Terebratulida)[10] | |||
| Mutationella | M. sp | Mutationellidae (Terebratulida)[10] | |||
| Podolella | P. sp | Mutationellidae (Terebratulida)[10] | |||
| Derbyina | D. smithi, D. jamesiana | Mutationellidae (Terebratulida)[10] | |||
| Pleurothyrella | P. knodi | Mutationellidae (Terebratulida)[10] | |||
| Scaphiocoelia | S. boliviana | Mutationellidae (Terebratulida)[10] | |||
| Cryptonella | C. baini | Cryptonellidae (Terebratulida)[10] | |||
| Conularia | C. quichua, C. albertensis[11] | Conulariida | |||
| Paraconularia | P. ulrichiana, P. africana[11] | Conulariida | |||