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This specimen was also the subject of a 1997 SVP abstract
and it has been suggested that these theropods occupied different ecological niches to reduce competition
Niobrara County
They are also wonderful ideas for presentation awards or gifts
Eocene Green River Cardiospermum P-PCM-16-079 Coprolite This specimen was also theCardiospermum coloradensis Green River Formation Parachute Creek Member Middle Eocene Uintah County, Utah This is a good example of the herbaceous vine Cardiospermum. In general the impression from the upper Green River are highly variable in shape. They have rounded apices on the lobes and dissections of the leaflets. Fossil examples of Cardiospermum are much more coriaceous that that of living species as evidenced by the heavy deposit of carbon and
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