Meramecian | Article about Meramecian by The Free Dictionary
A North American provincial series of geologic time: Upper Mississippian (above Osagian, below Chesterian).
References in periodicals archive
Earlier studies assigned the formation to Os-agian through Meramecian
(Monnett 1948; Dorr and Moser 1964; Ells 1979; Shaver 1985; Harrell et al.
Systematics and phylogeny of the Late Osagean and Meramecian
crinoids Platycrinites and Eucladocrinus from the Mississippian stratotype region.
The productive areas are found in the Meramecian
(= Valmeyerian) Middle Mississippian to Chesterian, Late Mississippian-age rocks.