Hexapylocapsa anachoreta n.gen., n.sp., type of a new monocyrtid nassellarian family (Radiolaria) with double-shelled cephalis

The Lower Tithonian Mühlheim Member of the Mörnsheim Formation in the Solnhofen area (Franconian Alb, Southern Germany) contains a very well preserved and rich radiolarian fauna with many new species of Spumellaria, Entactinaria and Nassellaria.Hexapylocapsa anachoreta n. gen., n. sp. described herein is one of such nassellarian taxa. Having a skeleton formed of a small cephalis enclosed within a spongy, bell-shaped cortical test, this new radiolarian represents the type of the new family Hexapylocapsidae which presents structural affinities with the Late Paleozoic family Pylentonemidae.