Alpenachitina |
Alpenachitina eisenacki
|
Iowa |
Middle Devonian |
|
Ancyrochitina |
Ancyrochitina aequoris
|
Iowa |
Middle Devonian |
|
Ancyrochitina |
Ancyrochitina cornigera
|
Iowa |
Middle Devonian |
|
Ancyrochitina |
Ancyrochitina megastyla
|
Nd |
Nd |
|
Ancyrochitina |
Ancyrochitina spinosa
|
Iowa |
Middle Devonian |
|
Angochitina |
Angochitina capillata
|
Iowa |
Middle Devonian |
|
Angochitina |
Angochitina devonica
|
Iowa |
Middle Devonian |
|
Angochitina |
Angochitina devonica
|
Nd |
Nd |
|
Angochitina |
Angochitina globosa
|
Nd |
Nd |
|
Angochitina |
Angochitina implicationis
sp. nov. |
Iowa |
Middle Devonian |
|
Angochitina |
Angochitina milanensis
|
Nd |
Nd |
|
Desmochitina |
Desmochitina aranea
sp. nov. |
Iowa |
Middle Devonian |
|
Desmochitina |
Desmochitina parkerae
sp. nov. |
Iowa |
Middle Devonian |
|
Desmochitina |
Desmochitina sp
|
Iowa |
Middle Devonian |
|
Earlachitina |
Earlachitina latipes
|
Nd |
Nd |
|
Earlachitina |
Earlachitina sp
|
Nd |
Nd |
|
Hoegisphaera |
Hoegisphaera
|
Iowa |
Middle Devonian |
|