Pleuronococeras sp. cephalopod from Germany

The specimen below is of a Nautiloid called Pleuronococeras sp. and comes from the Ahbach formation (Devonian, Givetian stage) near Üxheim, Germany. Pleuronococeras is an open coiled species of Cephalopod that looked like a bracelet if one were to excavate a good specimen. This fossil is mostly crushed but still is a good example of the species. You can see that the crushed segments had some decoration on them in the form of linear growths parallel to the shell direction.

Thanks to Nils for the fossil. I don't have too many non-straight nautiloids from the Devonian in my collection.

Kransia pentagona brachiopod from Germany

Kransia pentagona is a small Rhynchonellid type brachiopod from the Hallert mbr. of the Ahbach Formation (Devonian, Givetian stage) near Blankenheim, Germany. It resembles Uncinulus sp. like brachiopods such as Sphaerirhynchia from the Haragan Formation of Oklahoma and Primipilaria primipilaris from Poland.

Specimen #1 Brachial valve

Anterior

Pedicle valve

Posterior

Profile

Specimen #2 Brachial valve

Anterior

Pedicle valve

Posterior

Profile

Thanks to Nils for these specimens.

Subtransnema sp. brachiopod from Germany

Subtransnema sp. brachiopods remind me of Protodouvillina sp. brachiopods. They both look similar in shape and have thin radial lines on the surface of the pedicle valve. The specimen below is from the Hallert member of the Ahbach Formation (Devonian, Givetian stage) near Blankenheim, Germany.

Pedicle valve

Anterior

Brachial valve

Posterior

Profile

For comparison purposes I've blogged about Douvillina interstrialis from Poland, Douvillina arcuata from Iowa and Protodouvillina inaequistriata from New York and Ontario.

Thanks go out to Nils for sending me this specimen.