01374cam a22003011 4500 s 21000005 DLC 20260227111911.0 751117s1918 xx 000 0 eng s 21000005 (OCoLC)1837211 DLC OKentU DLC premarc Q11 .U6 no. 163, pt. 5 Jackson, Robert Tracy, 1861-1948. Fossil Echini of the Panama Canal Zone and Costa Rica. By Robert Tracy Jackson. Washington, Govt. print. off., 1918. 103-116 p. illus. 25 cm. Smithsonian institution. United States National museum. Bulletin 103 [pt.5] At head of title: Contributions to the geology and paleontology of the Canal Zone, Panama, and geologically related areas in Central America and the West Indies. "Extract from Bulletin 103, pages 103-116, with plates 46-52." Stamped on t.-p.: Issued Feb. 19, 1919. "Essentially a reprint of my paper bearing the same title published in the Proceedings of the United States National museum, volume 53, pages 489-501 ... September 24, 1917."--Introd. Sea urchins, Fossil. Paleontology Panama. Paleontology Costa Rica. United States National Museum. Bulletin ; 103 [pt.5] 52693 52693