†family Placatenellidae Mooi et al. 2018 (sand dollar)
PaleoDB taxon number: 371290
Full reference: R. Mooi, S. A. Martinez, C. J. Del Rio and M. I. Feijo Ramos. 2018. Late Oligocene–Miocene non-lunulate sand dollars of South America: Revision of abertellid taxa and descriptions of two new families, two new genera, and a new species. Zootaxa 4369(3):301-326
Parent taxon: Scutelliformes according to R. Mooi et al. 2018
Sister taxa: Abertellidae, Astriclypeidae, Dendrasteridae, Echinarachniidae, Eoscutellidae, Mellitidae, Monophorasteridae, Protoscutellidae, Rotulidae, Scutasteridae, Scutellidae, Taiwanasteridae
Subtaxa: Camachoaster, Placatenella
Type: Placatenella