The English Zechstein and related topics /

Cyhoeddwyd 1986

Extinction : how life on earth nearly ended 250 million years ago /

gan Erwin, Douglas H., 1958-
Cyhoeddwyd 2006

A monograph of Carboniferous and Permian Foraminifera : (the genus Fusulina excepted) /

gan Brady, Henry Bowman, 1835-1891
Cyhoeddwyd 1876

The Permian extinction and the Tethys : an exercise in global geology /

gan Şengör, A. M. Celâl
Cyhoeddwyd 2009

The Permian reef complex of the Guadalupe Mountains region, Texas and New Mexico : a study in paleoecology /

gan Newell, Norman Dennis, 1909-
Cyhoeddwyd 1953

Permian sphenopsids from Antarctica : descriptions and distribution of species of the fossil plant genera Phyllotheca, Schizoneura, Paracalamites, and Umbellaphyllites /

gan Rigby, J. F.
Cyhoeddwyd 1969

The Permian timescale /

Cyhoeddwyd 2018

Permian-Triassic evolution of Tethys and western circum-Pacific /

Cyhoeddwyd 2000

Permian-Triassic Pangean basins and foldbelts along the Panthalassan margin of Gondwanaland /

Cyhoeddwyd 1994

The permo-triassic formations : a world review /

gan Sherlock, Robert Lionel, 1875-
Cyhoeddwyd 1947

Stratigraphic boundary problems: Permian and Triassic of West Pakistan /

gan Kummel, Bernhard, 1919-
Cyhoeddwyd 1970

The Zechstein facies in Europe /

Cyhoeddwyd 1987