Article: A new articulated thelodont (Agnatha) from the early Devonian of Britain

A new articulated early Devonian specimen of a thelodont from Britain is described. It is a nikoliviid and is referred to a new species, Nikolivia milesi. The scales of this form bear some resemblance to those of N. oervigi (Karatajute-Talimaa 1968) and N. elongata (Karatajute-Talimaa 1978), and possibly N.? ('Sigurdia') heintzae (Dineley and Loeffler 1976). The presence of a possible pore canal system is noted. No other new characters to help decide the relationship of thelodonts to other agnatha are present. A comparison is made with other articulated thelodonts and a suggestion for the mode of life is given.