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Temporal range: Eifelian
Bolivosteus chacomensis reconstruction.jpg
Artist's reconstruction
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Placodermi
Order: Rhenanida
Family: Asterosteidae
Genus: Bolivosteus
Species: B. chacomensis
Binomial name
Bolivosteus chacomensis
Goujet, Janvier & Suarez-Riglos, 1986

Bolivosteus chacomensis is a rhenanid placoderm from the Eifelian of Bolivia, and is the only placoderm known from the “Malvinokaffric” invertebrate faunas. The Malvinokaffric faunas represent a series of cold-water ecosystems near or at the South Pole during the Middle Devonian, and apparently lacked the presence of ammonoids, bryozoa, or colonial corals.[1] B. chacomensis is known from skull fragments and scales.


  1. ^ Janvier, Phillipe (2007). THE DEVONIAN VERTEBRATES OF SOUTH AMERICA: MALVINOKAFFRIC FISHES AND GONDWANA-EURAMERICA FAUNAL INTERCHANGE (PDF). 4th European Meeting of the Palaeontology and Stratigraphy of Latin America. Cuadernos del Museo Geominero 8. pp. 223–227.