Tag Archives | Classification of Ostracoderms

The Ostracodermi is divided into 2 subclasses and 5 suborders which are as follows: Subclass I. Monorhina: A single, large, slit-like median nostril on the top of the head between the eyes. The Monorhina has been divided into three orders: Order 1. Euphanerida: Silurian. This order is represented by a single genus and species Jamoytius kerwoodi, which was previously placed [...]