Urban fossils of Ottawa
City Hall
Tyndall Stone
Location: outer façade
Rock: limestone
Age: Ordovician
Fossils: cephalopods, corals, gastropods and ichnofossils
Information and photographs: Quentin Gall. Dept. of Earth Sciences, University of Ottawa
More information: A Walking Guide - Ottawa’s Building and Monument Stones
City Hall
Tyndall Stone
Location: outer façade
Rock: limestone
Age: Ordovician
Fossils: cephalopods, corals, gastropods and ichnofossils
Information and photographs: Quentin Gall. Dept. of Earth Sciences, University of Ottawa
More information: A Walking Guide - Ottawa’s Building and Monument Stones
Surface of Tyndall Stone on the façade, showing dolomitized burrows (Thalassinoides), orthocone cephalopods and a gastropod (Hormotoma sp.)
Tabulate coral