 Yantaromyrmex is an extinct genus of ants first described in 2013 . Members of this genus are in the subfamily Dolichoderinae of the family Formicidae , known from Middle Eocene to Early Oligocene fossils found in Europe . The genus currently contains five described species , Y. constrictus , Y. geinitzi , Y. intermedius , Y. mayrianum and Y. samlandicus . The first specimens of Y. mayrianum were described from the Baltic amber .
Y. constrictus
Y. geinitzi
Y. intermedius
Y. mayrianum
Y. samlandicus
Y. terestis
Y. vietris
Y. xylo