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  1. Families/

Mucrospiriferidae

Mucrospirifer

Mucrospirifer alpenensis
Mucrospirifer arkonensis
Mucrospirifer attenuatus
Mucrospirifer consobrinus
Mucrospirifer cooperi
Mucrospirifer grabaui
Mucrospirifer latus
Mucrospirifer mucronatus
Mucrospirifer multiplicatus
Mucrospirifer profundus
Mucrospirifer prolificus
Mucrospirifer thedfordensis

Tylothyris

Tylothyris bimesialis
Tylothyris subvaricosa umbonata