THE NEBRASKAN ICE INVASION 



241 



III. Systematic Catalog of the Biota Referred to the Aftonian 

 Interglacial Interval 



PLANTS 



BRYOPKYTA 

 Hypnaceae 

 Camptoihecium nilens (Schreb.) Schimp. =Hypnum nitens. 

 Drepanocladus fiuitans(L.) Wainst. = " fluitans. 



rcvolvcns Swartz. = " revolvens. 



Calliergon richardsoni Lesq. and Jams. = " richardsoni. 



PTERIDOPHYTA 



Species indet. 



SPERMATOPHYTA 

 GYMNOSPERMAE 



PlNACEAE 



Pinus species 



Larix laricina (DuRoi) Koch = L. americana. 



Picea species. 



" mariana (Mill.) BSP. = Abies nigra Link. 



ANGIOSPERMAE 



MONOCOTYLEDONAE 



Gramineae 



Species indet. 



Populus species 

 Juglans species 

 Ulmus species 

 Vitis species 



Quadrtda metanevra Raf. 

 Anodonta imbecilis Say (?) 



DICOTELEDONEAE 

 Salicaceae 



Juglandaceae 



Urticaceae 



VlTACEAE 



ANIMALS 



MOLLUSCA 



PELECYPODA 



Unionidae 



Lampsilis anodontoides (Lea) 



