Gamoneda Formation

The Gamoneda Formation is an Emsian geologic formation of southern Bolivia. The approximately thick formation comprises marine micaceous grey siltstones and burrowed grey sandstones and shales.

Fossil content

The formation has provided the following fossils:

• Acastoides gamonedensis
• Australocoelia palmata
• Australospirifer hawkinsi
• Australostrophia mesembria
• Bainella (Belenops) insolita
• Cryptonella baini
• Deltacephalaspis (Deltacephalaspis) comis
• Deltacephalaspis (Deltacephalaspis) retrospina
• Deltacephalaspis (Prestalia) tumida
• Derbyina jamesiana
• Gamonedaspis scutata
• Kozlowskiaspis (Romanops) australis
• Notiochonetes falklandica
• Phacopina convexa
• Plicoplasia planoconvexa
• Protoleptostrophia concinna
• Pustulatia curupira
• Schizostylus (Curuyella) granulata
• Tarijactinoides jarcasensis
• Burmeisteria sp.
• cf. Francovichia sp.
• Calmoniidae indet.
• Eurypterida indet.

See also

• List of fossiliferous stratigraphic units in Bolivia

References

Further reading

• N. Eldredge and L. Branisa. 1980. Calmoniid trilobites of the Lower Devonian Scaphiocoelia Zone of Bolivia, with remarks on related species. Bulletin of the American Museum of Natural History 165(2):181-289
• P. E. Isaacson. 1977. Devonian stratigraphy and brachiopod paleontology of Bolivia. part A: Orthida and Strophomenida. Palaeontographica Abteilung A 155(5-6):133-192