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Temporal range: Emsian
Arenipiscis westolli.jpg
Artist's reconstruction
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Placodermi
Order: Arthrodira
Family: Buchanosteidae
White, 1952
Genus: Arenipiscis
Species: A. westolli
Binomial name
Arenipiscis westolli
Young, 1981

Arenipiscis westolli is an extinct buchanosteid arthrodire placoderm. Its fossils have been found in Emsian-aged marine strata of New South Wales, Australia.

The generic name, meaning "sand fish," refers to how the dermal surfaces of the armor have a pattern of tiny bumps, creating a granular texture.