I'm looking for:
1.The complete bibliographical reference where O. P. Hay (1930) described the
superfamily Edestoidea (Elasmobranchii, Eugeneodontida)
2. Dr's Earl Kauffman email
I will be very gratefull to whom answer my question
Francisco Sour Tovar
Museo de Paleontologia de la Facultad de Ciencias
Universidad Nacional Autonoma de Mexico
Ciudad Universitaria, Mexico, D.F. C.P. 04510