Placolepis is an extinct genus of phyllolepid placoderm first discovered in New South Wales.Ritchie, Alexander. (1984). A new placoderm, Placolepis gen. nov. (Phyllolepidae), from the Late Devonian of New South Wales, Australia. Proceedings of the Linnean Society of New South Wales, 107, 321--353 Placolepis was the most widespread phyllolepid genus, with fossils found in Australia, Turkey, Venezuela and Antarctica.Young, Gavin & Long, John. (2005). Phyllolepid placoderm fish remains from the Devonian Aztec Siltstone, southern Victoria Land, Antarctica. Antarctic Science. 17. 387-408. https://doi.org/10.1017/S095410200500283X
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