30848 - Nicely Prepared Bug Eyed 2.12 Inch Coltraneia effelesa Middle Devonian Geragnostus occitanus Mammals during the Mesozoic era

Mammals during the Mesozoic era were extremely rare although they had representation within the ecosystems in which dinosaurs reigned

United States (13: Colorado

while 476 are currently extant with or without a fossil record

22 grams at UCLA

because many pollen grains are preserved inside the coprolites

30848 - Nicely Prepared Bug Eyed 2.12 Inch Coltraneia effelesa Middle Devonian Geragnostus occitanus Mammals during the Mesozoic eraColtraneia sp, Lieberman and Kloc 1997 (trilobite) Trilobita Phacopida Acastidae Full reference: B. S. Lieberman and G. J. Kloc. 1997. Evolutionary and biogeographic patterns in the Asteropyginae (Trilobita, Devonian) Delo, 1935. Bulletin of the American Museum of Natural History 232: 1 127 Parent taxon: Acastidae according to B. S. Lieberman and G. J Kloc 1997 Sister taxa: Acastava, Acaste, Acastella, Acastellina, Acastocephala, Acastoides,