Periodo Silúrico
Dicoelosia verneuiliana (BEECHER)

Lickershamn, Gotland, Schweden

           Ferganella borealis         (v. BUCH, 1834)

Lickershamn, Gotland, Schweden

       Oglupes muldae       (COPPER, 2004)

Mulde, Gotland, Schweden

          Rhynchotreta cuneata       ( DALMAN,1828 )

Mulde, Gotland, Schweden

        Daya navicula      (SOWERBY)

Lauderbacker, Gotland, Schweden

   Dicoelosia biloba    (LINNAEUS, 1758)

Klinthamn, Gotland, Schweden

   Eospirifer radiatus (SOWERBY)

Djupvik, Gotland, Schweden

Homoeospira baylei (D`ORBIGNY)

Lauderbacker, Gotland, Schweden

Stegerhynchus indianense (COPPER)

Newsen Stadtion, Tennessee, USA

Anastrophia sp. Synonym. Savageina

Waldron, Indiana, USA

     Atrypa reticularis     (LINNAEUS, 1758)

Waldron, Indiana, USA

          Glassia sp           (Davidson, 1881)

Waldron, Indiana, USA

  Eoplectodonta sp (KOZLOWSKI, 1929)

Waldron, Indiana, USA

          Homeospira evax         (HALL)

Waldron, Indiana, USA

    Oglupes visbyensis   (COPPER)

Stavsklint, Gotland, Schweden

Periodos