Palaeozoogeographical connections of the Devonian vertebrate communities of the Baltica Province. Part II. Late Devonian

Constant faunal interchanges are observed between Baltica and Laurentia, but connections to other provinces are sporadic. Different vertebrate groups indicate varying dispersal capabilities. The cosmopolitans are ptyctodont, arthrodire and antiarch placoderms, chondrichthyans, acanthodians, actinopterygians, and struniiforms. Agnathans and other sarcopterygians show limited dispersal capabilities. Continental and pelagic marine faunas may have interacted by penetration of the members of one fauna into the habitat of another one during favourable periods.