Paleontology. New and ancient trace makers.
Bengtson
Stefan
S
Nordic Center for Earth Evolution and Department of Palaeozoology, Swedish Museum of Natural History, Box 50007, SE-10405 Stockholm, Sweden. stefan.bengtson@nrm.se
Rasmussen
Birger
B
D000656:Amoeba; D000818:Animals; D005580:Fossils; D019015:Geologic Sediments; D010163:Paleontology