Churkin, M., Carter, C. 1996. Stratigraphy, structure, and graptolites of an Ordovician and Silurian sequence in the Terra Cotta Mountains, Alaska Range, Alaska. 1555 52, figs.1-50.
Record Last Modified:
26 Nov 2014
Taxonomy:
Animalia Hemichordata Graptolithina Graptoloidea Diplograptidae