FIGURE 3. <i>Placatenella complanata</i> (Brito, 1981), photographs. A: Detail of petal in ambulacrum III of MPEG 886-I showing pores of trailing tube feet (arrow indicating most distal pore pair). B: Detail of oral surface near posterior edge of MPEG 2405-I showing periproct at margin, inside notch (p), and continuity of posterior interambulacral post-basicoronals with basicoronal 1 (arrow). 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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