FLORA OF THE PRIMARY OR PALAEOZOIC PERIOD. Reign of Acrogens. FOSSIL FLORA OF THE SECONDARY OR MESOZOIC PERIOD. Reign of FOSSIL FLORA OF THE TERTIARY OR CAINOZOIC PERIOD, TRANSCRIBER'S NOTE Basic fractions are displayed as ½ ⅓ ¼ etc; other fractions are shown in the form a/b, eg 3/11 or 13/(34×2). The caption for an illustration is displayed as a sidenote in the etext. It was shown as a page footnote in the original text. Obvious typographical errors and punctuation errors have been corrected after careful comparison with other occurrences within the text and consultation of external sources. More detail can be found at the end of the book. INTRODUCTION |