A recently discovered fossil group, the Pteridospermae (see PALAEOBOTANY) have characters intermediate between the Ptendophyta and the more primitive seedplants.
The subject of palaeontological botany (see Palaeobotany) has been advanced by the researches of both botanists and geologists.
In recent years the science of vegetable palaeontology has been given the distinct name of Palaeobotany, so that " palaeontology e' among biologists mainly refers to zoology; but historically the two cannot be disconnected.
In the meantime the foundations of palaeobotany were being laid (1804) by Ernst Friedrich von Schlotheim (1764-1832), (1811) by Kaspar Maria Sternberg (1761-1838) and (1838) by Theophile Brongniart (1801-1876).
(See Palaeobotany.) The subjoined list included the larger standard works on algae, together with a number of papers to which reference is made in this article.
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