Pliocardia Woodring, 1925

Kiel, Steffen, Aguilar, Yolanda M. & Kase, Tomoki, 2020, Mollusks from Pliocene and Pleistocene seep deposits in Leyte, Philippines, Acta Palaeontologica Polonica 65 (3), pp. 589-627 : 610

Genus Pliocardia Woodring, 1925

Type species: Anomalocardia bowdeniana Dall, 1903 , by original designation; Pliocene , Bowden Formation, Jamaica .

Remarks.—Molecular data indicate that species currently assigned to Pliocardia (cf., Krylova and Sahling 2010) belong to two distinct clades ( Audzijonyte et al. 2012; Valdés et al. 2013; Johnson et al. 2017). The first clade includes “ Pliocardia ” cordata and “ Pliocardia ” ponderosa and is referred to as “ Pliocardia 1” by Valdés et al. (2013) and as “ cordata group” by Johnson et al. (2017). The second clade includes P. kuroshimana and P. crenulomarginata and was called “ Pliocardia 2” by Valdés et al. (2013) and “ Pliocardia ” by Johnson et al. (2017). It remains unclear, however, to which, if any, of these two clades the fossil type species belongs. Hence, we use Pliocardia here in inverted commas only.