These are assorted sketches and doodles generally found in the margins of research notebooks and field books.
Ordovician Sketches
Ambonycia
Sketch One
Ambonycia
Sketch Two
Ambonycia
Sketch Three
Ambonycia
Byssal Gape
Flexicalymene
Flexicalymene
Swimming
Epibionts on Parvahallopora
Ordovician
Reconstruction
Small Mesozoic Sketches
Pteradactyl
Triceratops
Stegosaurus
Brontosaur
Plio-Pleistocene Mollusks
Rushmere Member of the Yorktown Formation - block diagram
Modern Organisms
Terebratalia
transversa - Puget Sound brachiopod attached to snail crawling on clam
Terebratalia
transversa - fracture patterns
Galapagos Sealions
Colorado owl
Nebraska lizard - if it looks strange, that is because it started as a sketch of a baby jackrabbit
Illinois mushrooms
Ecuadoran woman - seen carry wood up a mountain near Quito
Cartoons
Big
Eyed Brachiosaur
Birth
of Venus venus
Experiments in Vertebrate Hybrid hexapody
Reptile-Mammal
Mammal-Aves
Aves-Mammalian