Note 277 — Chapter VIII
Reading edition
Pict. Atlas, pl. xlvii. fig. 31, p. 113. In the same plate there are figures of several specimens of detached portions of the stem of this species from the Kentish Chalk.
Reading edition
Pict. Atlas, pl. xlvii. fig. 31, p. 113. In the same plate there are figures of several specimens of detached portions of the stem of this species from the Kentish Chalk.