Callovian, a division of the Jurassic System (q.v.) on the Continent, represented in England by the Kellaways Rock.
Callovian
Chambers's Encyclopaedia, Volume 2: Beaugency to Cataract, p. 655
Source scan(s): p. 0668
Callovian, a division of the Jurassic System (q.v.) on the Continent, represented in England by the Kellaways Rock.