There are 3 matches

Collection Authorizer Collection name Reference
90277M. Clapham Point Sublime, Grand Canyon north rim (coll. Kenneth Allen) Kungurian - Permian 2 - Arizona David (1944)
90287M. Clapham Fish Canyon Road, Santa Cruz County (coll. Harald Drewes 1966) Roadian - Permian 3 - Arizona Hansen (1978)
118961M. Clapham Near Sublime Point, AZ (= MNA PI. 569 / coll. Earl 1963) Roadian - Permian 3 - Arizona Ossian (1976)

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