Cyrtina brachiopod from Iowa

These are the last of the fossils that I have from the Devonian of Iowa. They are a couple of Cyrtina specimens with some strange growth patterns.I think they both come from the Lime Creek formation (Devonian, Givetian).

Specimen #1
Brachial valve

Anterior

Pedicle valve (note the odd curving of the shell)

Posterior

profile

Specimen #2

Anterior

Pedicle valve (note the "twisted" look in the tip of the shell)

Posterior

Profile

I think both of these specimens came from Nathan so thank you!