Martin and Drew 1969

Image No. Family Species Class Sculpture
5 Pinaceae Picea engelmannii vesiculate alveolate
6 Pinaceae Abies concolor vesiculate alveolate
7 Cupressaceae Juniperus deppeana inaperturate gemmate
8 Ephedraceae Ephedra trifurca polyplicate psilate

UofAz Palynology