Figure 4 from: Conway KW, Mateos M, Vrijenhoek RC (2019) A new species of the livebearing fish genus Poeciliopsis from northern Mexico (Cyprinodontiformes: Poeciliidae). ZooKeys 883: 91-118. https://doi.org/10.3897/zookeys.883.37586

Figure 4 Sclerotic cartilage and sclerotic ossifications in members of Poeciliopsis (right side, image reversed) aP. jackschultzi, TCWC 20082.01, paratype, female, 23.0 mm SL bP. lucida, UMMZ 189041, female, 24.0 mm cP. occidentalis, UMMZ 202393, female, 35.0 mm SL. Abbreviations: AS, anterior sclerotic. PS, posterior sclerotic; SC, scleral cartilage; Scale bar: 0.4 mm.