Tristichograptus, a triserial graptolite from the Lower Ordovician of Spitsbergen

14 1 March 188 199

FORTEY, R. A. 1971. Tristichograptus, a triserial graptolite from the Lower Ordovician of Spitsbergen. Palaeontology14, 1, 188–199.

R. A. Fortey The Palaeontological Association (Free Access)