Taxa Count: 139
ATRYPIDAE
Anatrypa (Variatrypa) exoleta
Anatrypa (Variatrypa) licta
Anatrypa calypso
Anatrypa micans
Atrypa
Atrypa (Gotatrypa)
Atrypa altilis
Atrypa arctostriata
Atrypa aspera
Atrypa biconvexa
Atrypa callawayensis
Atrypa calvini
Atrypa comata
Atrypa comis
Atrypa desquamata
Atrypa devoniana
Atrypa devoniana decrescens
Atrypa ellipsoidea
Atrypa gigantea
Atrypa hystrix
Atrypa hystrix var. elongata
Atrypa hystrix var. occidentalis
Atrypa independensis
Atrypa independensis jamesvillensis
Atrypa independensis janesvillensis
Atrypa inflata
Atrypa iowensis
Atrypa kobar
Atrypa laticorrugata
Atrypa lineata
Atrypa lineata var. inflata
Atrypa marginalis
Atrypa missouriensis
Atrypa montanensis
Atrypa nevadana
Atrypa nieczlawiensis
Atrypa owenensis
Atrypa palmata
Atrypa planosulcata
Atrypa plicifera
Atrypa pronis
Atrypa pronis onusta
Atrypa reticularis
Atrypa reticularis elongata
Atrypa reticularis hillsboroensis
Atrypa reticularis newsomensis
Atrypa reticularis nodostriata
Atrypa reticularis var. a
Atrypa reticularis var. b
Atrypa reticularis var. niagarensis
Atrypa rockfordensis
Atrypa sinuata
Atrypa snyderensis
Atrypa sp a
Atrypa sp f
Atrypa spinosa
Atrypa spinosa montanensis
Atrypa spinosa var. linderi
Atrypa tennesseensis
Atrypa trowbridgei
Atrypa varicostata
Atrypa virilicosta
Atrypa waterlooensis
Atrypa waterlooensis canadensis
Atrypa waterlooensis gigantea
Atrypa waterlooensis websteri
Atryparia rabra
Atryparia rubra
Catazyga
Catazyga anticostiensis
Catazyga cartieri
Catazyga erratica
Catazyga headi schuchertana
Catazyga homeospiroides
Catazyga uphami australis
Desquamatia clarkei
Desquamatia costata
Desquamatia khavae
Eospinatrypa sagana
Gotatrypa altera
Hystricina trolla
Iowatrypa americana
Iowatrypa owenensis
Iowatrypa rara
Karpinskia conjugula
Plectatrypa arctoimbricata
Plectatrypa henningsmoeni
Plectatrypa imbricata
Plectatrypa rugosa
Protatrypa malmoensis
Pseudoatrypa
Pseudoatrypa devoniana
Pseudoatrypa percrassa
Sibirispira
Spinatrypa
Spinatrypa (Invertrypa) subnuba
Spinatrypa (Invertrypa) talis
Spinatrypa andersonensis
Spinatrypa compacta
Spinatrypa coriacea
Spinatrypa echinocostata
Spinatrypa lata
Spinatrypa obsolescens
Spinatrypa sp b
Spinatrypa spinosa
Spinatrypa trulla
Spinatrypa trulla decorticata
Spinatrypina angusticostata
Spinatrypina asymmetrica
Spinatrypina comitata
Spinatrypina lamellosa
Spinatrypina recula
Spinatrypina soetenica
Spinatrypina sp d
Variatrypa (Radiatrypa) advena
Variatrypa (Radiatrypa) klukasi
Zygospira
Zygospira acutirostris
Zygospira aequivalvis
Zygospira cincinnatiensis
Zygospira circularis
Zygospira elongata
Zygospira kentuckiensis
Zygospira lebanonensis
Zygospira matutina
Zygospira maynesi
Zygospira mediocostellata
Zygospira modesta
Zygospira nicolleti
Zygospira paupera
Zygospira putilla
Zygospira recurvirostra
Zygospira recurvirostris
Zygospira recurvirostris turgida
Zygospira resupinata
Zygospira resupinata multicostata
Zygospira sp 1
Zygospira sulcata
Zygospira variabilis