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Edward Drinker
Cope
Academy of Natural Sciences, Philadelphia (Evolution Tree)

Thomas Henry
Huxley
(Evolution Tree)

Francis Maitland
Balfour
Cambridge (Neurotree)

Carl
Gegenbaur
Universität Heidelberg (Neurotree)


William Berryman
Scott
Princeton (Evolution Tree)


John C.
Merriam
Carnegie Institution of Washington (Evolution Tree)


William John
Sinclair
Princeton (Geotree)





Patricia A.
Holroyd
University of California
(Options)

Patricia HolroydX