“…Despite the same pattern of protractor muscles in taxon previously cited, P. persica presents a smaller anteriorposterior elongated protractor muscle insertion area, with more amorphous outline and with low anterior adductor penetration, very similar to the protractor insertion area shape of T. petitiana (Barón & Ciocco, 1997). This protractor shape and anterior adductor penetration degree is similar to other tellinoid families, such as Donacidae (Purchon, 1963;Narchi, 1978;Ansell, 1981;Passos & Domaneschi, 2004;Simone & Dougherty, 2004), Psamobiidae (Pohlo, 1972), Solecurtidae (Bloomer, 1905), and Semelidae (Domaneschi, 1995;Simone & Guimarães, 2008). Thus this character could be a basal one, as suggested by Simone & Wilkinson (2008)."…”