Robustum nodum
Robustum nodum is the one species of a problematic genus of Ordovician hemithecellid mollusc proposed by Stinchcomb and Darrough in 1995.
Its similarities to Matthevia were outlined by Vendrasco & Runnegar.
Robustum nodum is the one species of a problematic genus of Ordovician hemithecellid mollusc proposed by Stinchcomb and Darrough in 1995.
Its similarities to Matthevia were outlined by Vendrasco & Runnegar.