![](https://samnoblemuseum.ou.edu/wp-content/uploads/2017/08/OU6266_01.jpg)
![](https://samnoblemuseum.ou.edu/wp-content/uploads/2017/08/OU6266_01-1024x957.jpg)
BrevilamnuellaCC BY-NC-ND 4.0
Brevilamnuella
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EospiriferCC BY-NC-ND 4.0
Eospirifer
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HowellellaCC BY-NC-ND 4.0
Howellella
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AtrypinaCC BY-NC-ND 4.0
Atrypina
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NucleospiraCC BY-NC-ND 4.0
Nucleospira
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LeptoenaCC BY-NC-ND 4.0
Leptoena
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LeptoeniscaCC BY-NC-ND 4.0
Leptoenisca
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CamarotoechiaCC BY-NC-ND 4.0
Camarotoechia
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OrthostrophiaCC BY-NC-ND 4.0
Orthostrophia
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AtrypaCC BY-NC-ND 4.0
Atrypa
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KozlowskiellaCC BY-NC-ND 4.0
Kozlowskiella
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StegerhynchusCC BY-NC-ND 4.0