“Chitonodus springeri St.John & Worthen” by Frank W. Springer is a public-domain (CC0) artwork, free to view, download and reuse for any purpose. It is catalogued from the open collection of Smithsonian Open Access.

Chitonodus springeri St.John & Worthen

Frank W. Springer

Title	Chitonodus springeri St.John & Worthen
Artist	Frank W. Springer
Classification	St.John, Worthen. 1883. Illinois Geol.Survey Bull. 7 : 112, pl.6,f.6a-d.
Origin	Iowa, United States, North America Iowa
Holding institution	Smithsonian Open Access
Rights	Public domain (CC0)

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Updated 2026-09-05