Foot-prints in the bunter formation in England.
"The Student's Elements of Geology"
Sir Charles Lyell
bunter-sandstein, Saxony, one- eighth of natural size.
"The Student's Elements of Geology"
Sir Charles Lyell
Brongniart, in 1849, as coming from the "Gres bigarre," or bunter, not one is common to the Keuper.
"The Student's Elements of Geology"
Sir Charles Lyell