Note 227 — Chapter XI · ARACHNIDA (CONTINUED)—DELOBRANCHIATA = MEROSTOMATA (CONTINUED)—EURYPTERIDA
Reading edition
Walcott has described, under the generic name Beltina, imperfect specimens from the Algonkian (pre-Cambrian) of Montana, which he thinks may be the remains of Eurypterids (Bull. Geol. Soc. America, x., 1899, p. 238).