Turrisaspis
Turrisaspis is an extinct genus of groenlandaspid arthrodire placoderm . It is known only from trunk fragments from the Catskill Formation from the Upper Devonian of Clinton County, Pennsylvania .
Turrisaspis is an extinct genus of groenlandaspid arthrodire placoderm . It is known only from trunk fragments from the Catskill Formation from the Upper Devonian of Clinton County, Pennsylvania .