FIGURE 2. <i>Placatenella complanata</i> (Brito, 1981), photographs. A: Aboral surface of holotype, MNRJ 5460-I. B: Oral surface of holotype, MNRJ 5460-I. C: Aboral surface of MNRJ 5536-I, with deep, narrow posterior notch. D: Oral surface of MNRJ 5536-I. Scale bars 10 mm in length.
Mooi <i>et al.</i> 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. <i>Zootaxa</i> 4369(3): 301–326.
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