Stenolaemata

Archimedes swallovanus, bryozoan

Plaster models of conodonts

Archimedes swallovanus, bryozoan

Chasmatopora furcata eichwald, bryozoan

Spiral axis of Archimedes, bryozoan

Ptilodictya lanceolata (Goldfuss), bryozoan

Actinopora disticha, bryozoan

Meliceritites semiclausa, bryozoan

Fenestrellina plebeia, net bryozoan

Ozarkodina remscheiddensis eosteinhornensis