Contributions to Canadian paleontology part 1

Abstract

The type specimen of P. rugosum and Nicholson's thin sections of N. billingsii are described and figured. Palaeophyllum is shown to be distinct from Streptelasma and the Streptelasmatina and similar to Co/11mnaria, and is placed in the Columnariina. Columniphyllum Quenstedt 1879 is discussed, its type species selected and it becomes an objective synonym of Co/umnaria Goldfuss 1826. The family relationships of Columnaria sulcata are discussed and further study on European species is shown to be necessary before the nominal ordinal position of the Phillipsastraeidae can be safely established. Nyctopora is considered to belong to the family Syringophyllidae Pocta 1902.

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