Decorah Fauna
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Family | Subfamily | Genus | Species |
| 1 | Asaphidae | Isotelinae | Ectenaspis | sp. |
| 2 | Asaphidae | Isotelinae | Isotelus | latus |
| 3 | Asaphidae | Isotelinae | Isotelus | walcotti |
| 4 | Asaphidae | Isotelinae | Isotelus | gigas |
| 5 | Bathyuridae | Raymondites | ingalli (?) | |
| 6 | Bathyuridae | Raymondites | spiniger | |
| 7 | Calymenidae | Flexicalymene | senaria | |
| 8 | Calymenidae | Gravicalymene | sp. | |
| 9 | Cheiruridae | Cheirurinae | Ceraurus | plattinensis |
| 10 | Cheiruridae | Cheirurinae | Gabriceraurus | dentatus |
| 11 | Cheiruridae | Acanthoparyphinae | Acanthoparypha | cf. subcircularis |
| 12 | Cheiruridae | Cheirurinae | Ceraurinus | sp. |
| 13 | Dimeropygidae | Dimeropyge | galenensis | |
| 14 | Encrinuridae | Encrinurinae | Physemataspis | sp |
| 15 | Illaenidae | Illaeninae | Thaleops | laurentiana |
| 16 | Illaenidae | Illaeninae | Thaleops | n. sp. |
| 17 | Illaenidae | Bumatinae | Bumastoides | porrectus |
| 18 | Illaenidae | Bumatinae | Bumastoides | n. sp. |
| 19 | Lichidae | Trochurinae | Hemiarges | paulianus |
| 20 | Lichidae | Trochurinae | Hemiarges | cf. leviculus |
| 21 | Lichidae | Trochurinae | Hemiarges | n. sp. |
| 22 | Lichidae | Tetralichinae | Amphilichas | cf. ottawensis |
| 23 | Lichidae | Tetralichinae | Amphilichas | n. sp. |
| 24 | Proetidae | Aulacopleuridae | Harpidella | n. sp. |
| 25 | Proetidae | Proetus | parviusculus | |
| 26 | Pterygometopidae | Eomonorachinae | Calyptaulax | schmidti |
| 27 | Pterygometopidae | Eomonorachinae | Eomonorachus | intermedius |
| 28 | Pterygometopidae | Eomonorachinae | Sceptaspis | lincolnensis |
| 29 | Pterygometopidae | Pterygometopinae | Achatella | achates |
| 30 | Remopleurididae | Hypodicranotus | sp | |
| 31 | Styginidae | Eobrontus | lunatus | |
| 32 | Styginidae | Failleana | indeterminatus |
