Periodo Carbonífero
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Schizophoria connivens (Phillips, 1836). L. 09 mm.
Upper Asbian Limestone, Visean, Lower Carboniferous. Treak Cliff, Castleton, Derbyshire. England
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Schizophoria connivens (Phillips, 1836), L. 10 mm.
Upper Asbian Limestone, Visean, Lower Carboniferous. Treak Cliff, Castleton, Derbyshire. England
_L._17_mm._.jpg)
Schizophoria connivens (Phillips, 1836) L. 17 mm.
Upper Asbian Limestone, Visean, Lower Carboniferous. Treak Cliff, Castleton, Derbyshire. England
L._30_mm._.jpg)
Productus productus (Martin)L. 30 mm.
Upper Asbian Limestones, Visean, Lower Carboniferous. Chrome Hill, Buxton, Derbyshyre. England
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Martinia glabra (Sowerby 1821) L. 11 mm.
Upper Asbian Limestone, Visean, Lower Carboniferous. Treak Cliff, Castleton, Derbyshire. England
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Martinia glabra (Sowerby, 1821) L. 14 mm.
Upper Asbian Limestone, Visean, Lower Carboniferous. Treak Cliff, Castleton, Derbyshire. England
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Picuropugnoides picurodon (Phillips) L. 13 mm.
Upper Asbian Limestones, Visean, Lower Carboniferous. Treak Cliff, Castleton, Derbyshire. England
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Picuropugnoides picurodon (Phillips), L. 07 mm.
Upper Asbian Limestones, Visean, Lower Carboniferous. Treak Cliff, Castleton, Derbyshire. England
._L._07_mm._.jpg)
Picuropugnoides picurodon (Phillips). L. 07 mm.
Upper Asbian Limestones, Visean, Lower Carboniferous. Treak Cliff, Castleton, Derbyshire. England
_L._17_mm.__.jpg)
Anthracospirifer occiduus (Sadlick, 1960) L. 17 mm.
Pennsylvanian, Naco Fm. Kohl´s Ranch, Arizona. Estados Unidos
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Anthracospirifer pellaensis (Weller) L. 18 mm.
Mississippian, "Pella Beds" Oscalossa, Iowa, Estados Unidos.
Beecheria sp L. 17 mm.
Mississippian. Codroy Grp. Aquathuna, Newfoundland (Isla de Terranova)
Chonetinella sp L. 5 mm.
Pennsylvanian, Kansas City Group. Chillicothe, Mo. Missouri. Estados Unidos
Chonetinella sp. L. 5 mm.
Pennsylvanian, Kansas City Group. Chillicothe, Mo. Missouri. Estados Unidos
Kozlowskia sp. L. 8 mm.
Pensylvanian, Wintterset Ls. Chilicothe, Misuri. Estados Unidos