cataphractus, Acipenser Gray [J. E.] (ex Rapp) 1835:122 [Proceedings of the Zoological Society of London 1834 (pt 2); ref. 18155] Mississippi River, U.S.A. Possible holotype: BMNH 2004.12.8.3. The diagnosis was quoted from a manuscript by Rapp but the description was by Gray; authorship herein regarded as Gray (ex Rapp). •Synonym of Acipenser fulvescens Rafinesque 1817. •Synonym of Huso fulvescens (Rafinesque 1817). Current status: Synonym of Acipenser fulvescens Rafinesque 1817. Acipenseridae. Habitat: freshwater, brackish.