Vol. s4-42, Issue 251, 1916November 01, 1916 EDT
Some Characters of the Apical End of Pseudorthoceras Knoxense McChesney
Some Characters of the Apical End of Pseudorthoceras Knoxense McChesney
George Herbert Girty,
Girty, G. H. (1916). Some Characters of the Apical End of Pseudorthoceras Knoxense McChesney. American Journal of Science, s4-42(251), 387–388. https://doi.org/10.2475/ajs.s4-42.251.387