Cambrian
Silurian 		TRILOBITE RESEARCH DIRECTORY
HEGNA, Thomas A.
PROFILE
Name: HEGNA, Thomas A.
Category:  Student (Ph.D.)
Address:    Dept. of Geology and Geophysics
                   Kline Geology Lab
                   P.O. Box 208109
                   Yale University
                   New Haven, CT  06520-8109
                   USA
Phone: ---
Fax:   ---
Email: thomas.hegna@yale.edu
RESEARCH INTERESTS:
Area(s) of Research: Systematic Palaeontology - Paleoecology 
Group(s) of interest: Agnostida - Ptychopariida  
Period(s): Cambrian - Silurian
Field Area(s): USA (Idaho) 
Research Projects: Trilobite and arthropod phylogeny and evolution, Cambrian life, the interface between molecules and morphology, the philosophical foundations of paleontology and systematics.
WORKS:
11. Hegna, T. & Lerosey-Aubril, R. in press. Trilobite publications: statistics of the year 2006. Trilobite papers, 19.
4. Lerosey-Aubril, R. & Hegna, T.A. 2006. Trilobite publications: statistics of the year 2005. Trilobite Papers, 18: 3-6.
3. Hegna, T.A. 2006. Systematics of Late Cambrian (Sunwaptan) trilobites from the St. Charles Formation, southeastern Idaho. Unpublished MSc thesis, 236 pp.
2. Hegna, T.A. & Adrain, J.M. 2004. Reduced biofacies differentiation in Silurian trilobite faunas of Laurentia. Geological Society of America, Abstracts with Programs, 36: 177.
1. Hegna, T.A. & Adrain, J.M. 2003. Early Silurian trilobites from northeastern Missouri. Geological Society of America, Abstracts with Programs, 35: 13. 
Last update:
Oct., 18th 2007