Named for its Halite beds, the phrase "Salina Group" was first used as a descriptive term by James D. Dana in 1863.

[7] The Salina Formation is composed chiefly of dolomite and shale, interbedded with anhydrite, gypsum, and salt.

In the Michigan Basin, the Bertie is pinched out; the Bass Islands Formation makes up the upper most Salina.

[13] Mahoning County's name is derived from a Native American term "ma-hon-ink" meaning "at the lick.

"[14] Throughout the early 1800s, Ohio's salt demand exceeded its production from brine wells and licks.

Sterling Morton built a salt mine at a depth of 1800 feet on Cleveland's east side and Clarence Foster examined drilling records from Standard Oil along Lake Erie.

An Odawa man discovered it in a rock outcrop along Plaster Creek where it enters Grand River.

[15] In 1838, Michigan's first state geologist, Douglass Houghton, arrived to select a site for salt mining and reported an abundance of gypsum in the area.

That same year, he and Bela Hubbard discovered an outcrop of gypsum at the mouth of the Au Gres River in Saginaw Bay.

[15] The Salina serves as an oil reservoir formation along the Findlay Arch from Southwestern Michigan down into Northwest Ohio.

Medusaegraptus graminiformis (Ruedemann 1925) Orbiculoidea bertiensis (Ruedemann) Lingula semina (Ruedemann) Cyathophyllum hydraulicum (Simpson) Eurypterus remipes (DeKay, 1825) Archaeophonus eurypteroides (Kjellesvig-Waering 1966) Proscorpius osborni (Whitfield 1885) Paracarcinosoma scorpionis (Grote & Pitt) Eurypterus lacustris (Harlan, 1834) Erettopterus waylandsmithi (Kjellesvig-Waering & Caster 1955) Waeringopterus cumberlandicus (Leutze, 1961) Waeringopterus apfeli (Leutze, 1961) Dolichopterus herkimerensis (Caster and Kjellesvig-Waering 1956) Leperditia scalaris (Jones 1856) Megalomus canadensis (Hall, 1852) Loyalsburg Formation