A continuing study of a collection of marine arthropods from the Upper Cret
aceous of Sahel Alma in Lebanon has uncovered a new genus and species of th
e problematic arthropod group Thylacocephala. The apparent presence of two
pairs of antennae constitutes the first available morphological evidence fo
r a close relationship between this species and, by association, all thylac
ocephalans, and the Crustacea.