ammonites
Bienvillia Clark 1924 (trilobite)

Trilobita - Ptychopariida - Olenidae

Synonym: Mendoparabolina Rusconi 1951

Parent taxon: Triarthrinae according to Poulsen 1959

Sister taxa: Plesioparabolina, Porterfieldia, Triarthrus

Subtaxa: Bienvillia grandis, Bienvillia papulosus, Bienvillia stikta, Bienvillia tetragonalis

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Ecology: fast-moving low-level epifaunal carnivore