Wuttagoonaspis



Wuttagoonaspis is an extinct genus of primitive arthrodire placoderm fish from the Middle Devonian of Australia. The box-like skull is up to 18 centimeters in length, and the median dorsal plate averages in length about 10 centimeters. It contains two species: the type species Wuttagoonaspis fletcheri, described by Ritchie in 1973, and Wuttagoonaspis milligani, described by Young and Goujet in 2003.

Classification
Wuttagoonaspis belongs to the family Wuttagoonaspidae, and is closely related to Yiminaspis. It is one of the more basal members of the order Arthrodira, as shown in the cladogram below: