Holland, Charles Hepworth
One of many problems: taxonomy of the common Silurian Nautiloid Cephalopod "Orthoceras" bullatum J. de C. Sowerby - Wien Geologische Bundesanstalt 2002 - pp. 353-358 lám. - Austria. Abhandlungen der Geologischen Bundesanstalt .
CEPHALOPODA
NAUTILOIDEA
SILURICO
TAXONOMIA
One of many problems: taxonomy of the common Silurian Nautiloid Cephalopod "Orthoceras" bullatum J. de C. Sowerby - Wien Geologische Bundesanstalt 2002 - pp. 353-358 lám. - Austria. Abhandlungen der Geologischen Bundesanstalt .
CEPHALOPODA
NAUTILOIDEA
SILURICO
TAXONOMIA