†family Placatenellidae Mooi et al. 2018 (sand dollar)

Echinoidea - Clypeasteroida - Placatenellidae

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

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Type: Placatenella

Ecology: slow-moving semi-infaunal detritivore


• Miocene of Argentina (1 collection), Brazil (3)

Total: 4 collections each including a single occurrence

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