| |
| | Maryland Geological Survey: MARYLAND'S OFFICIAL STATE FOSSIL SHELL |
 | | It was labelled "a marilandia," or "from Maryland." (Contrary to what has appeared in print at least are far back as 1904, this fossil was not the first from North America to be so illustrated. |
 | | Ward, L.W. and Blackwelder, B.W., 1975, Chesapecten, a new genus of Pectinidae (Mollusca: Bilvalvia) from the Miocene and Pliocene of eastern North America: U.S. Geological Survey Professional Paper 861, 24 p. |
 | | Ward, L. and Gilinsky, N. Ecphora (Gastropoda: Muricidae) from the Chesapeake Group of Maryland and Virginia: Notulae Naturae, Academy of Natural Sciences of Philadelphia, No. 469, 21 p. |
| www.mgs.md.gov /esic/fs/fs6.html (1093 words) |
|