Fig. 4 in New Species Of The Lower Cretaceous Genus Matheronia Munier-Chalmas (Bivalve Hippuritida) In Romania

Fig. 4. Matheronia dacica sp. nov. Antero-posterior transverse sections of bivalve specimens showing the transverse outline and focusing on the myophoral organisation of RV. a. holotype, specimen IB 5391, from Caraşova Valley. b. ibidem, specimen IB 5398 from Beiului Valley. Scale bar 10 mm.图4 达契亚马瑟罗尼亚贝（Matheronia dacica）新种。双壳类标本的前后向横切面，展示其横切面轮廓并重点研究右瓣（right valve, RV）的肌痕构造。a. 正模标本IB 5391，采自卡拉绍瓦河谷。b. 同新种种标本，IB 5398号标本，采自贝尤卢伊河谷。比例尺为10毫米。