First fossil record of the liverwort family Cephaloziaceae (Jungermanniales, Marchantiophyta) from Baltic amber
Cephalozia veltenii T. Katag., n. sp., is described as a new leafy liverwort species from Eocene Baltic amber. It is characterized by (1) minute size of the shoot, less than 0.5 mm wide, (2) presence of a stem hyalodermis, and (3) simply bilobed leaves with the leaf insertion line not reaching to the midline of the dorsal part of the stem. This is the first fossil record for the genus Cephalozia s. lat. and for the family Cephaloziaceae (Jungermanniales, Marchantiophyta) from Baltic amber, and constitutes an important addition to our knowledge of the Eocene Baltic liverwort flora.