-
these include the
winged Mucrospirifer, Atrypa, Strophodonta, Cyrtina,
Megastrophia, and Athrysis. They are
often found in ****ociation with corals, crinoids...
-
Longispina mucronatus (Hall, 1843) •
Mediospiriter audaculus (Conrad, 1842) •
Megastrophia concava (Hall, 1857) •
Mucrospirifer consobrinus (D’Obrigny 1850) • Mucrospirifer...
- member. Also
found in the
Alpena Limestone and
Gravel Point Formation.
Megastrophia M.
gibbosa Four Mile Dam,
Thunder Bay River,
Alpena County, Michigan...
-
Brachyspirifer B.
lucasensis B.
manni Cyrtospirifer C. sp. aff.
grieri Megastrophia M. sp. aff.
hemispherica Pholidostronhia P.
nacrea Protoleptostrophia...
- †Megalomphala cr****a †Megalomus †Megalomus
canadensis †
Megastrophia †
Megastrophia concava †
Megastrophia profunda †Megistocrinus †Megistocrinus
expansus †Melocrinites...
- †Mediospirifer †Megalomoidea †Megamyonia †Megamyonia
unicostata †
Megastrophia †
Megastrophia profunda †Megistocrinus †Megistocrinus
pernodosus †Melocrinites...
-
locality for
species †Mediospirifer †Mediospirifer
audaculus †
Megastrophia †
Megastrophia concava †Meristella †Mesocoelia †Mesocoelia
obstipisutura †Mesocoelia...
- †Maryvillia †Matheria †Matheria
recta †Matthevia †Megamyonia †
Megastrophia †
Megastrophia profunda †Melocrinites †Menomonia †Merista †Meristina †Meroperix...
-
finksi †
Megastrophia †
Megastrophia concava †
Megastrophia hemisphaerica †
Megastrophia hemispherica †
Megastrophia hemisphericus †
Megastrophia profunda...
-
locality for
genus †Megalometer lata – type
locality for
species †
Megastrophia †
Megastrophia profunda †Megathentomum – type
locality for
genus †Megathentomum...
