FIGURE 9 - Offneria cf. interrupta. Unit A. Wadi Bedeck (a) Trans- verse section of the upper valve showering the geometry and the dis- tribution of the pallial canals and the myocardinal elements. (b) lon- gltod jnal obhque sect10n Of the upper valve shoveling the same attributes. a, section transversale Oblique d e la Valve superi cure montrant la geometne et la distr- ibutio des canaux palleaux ainsi que l'appareil myoeardinal. b, sec- tion longitudinale oblique de la valve supeneure montrant les mernes caraeteres. Off lMPEO GICOllIIQe (MAINKLLI}

Fig, 4.4,5 This species 18 docUII1BIlted from transverse sec- tions of the left valves, observed. in the unit A of %'adi Hed.eck and, in cores of the Shuaiba Formation in the Al Huwaisah field. An isolated right valve is from this latter locality. The left valve is characterized. by a row of low pyriform canals on the ventral side and. subrectangular radial canals, with occasional transverse partitions, on the ante- 1"101 Rnd poste1101' sides. The body cRvl'ty Slmws concave upward tabulae. As noticed. earlier (Masse 1992} the scarcity of transverse partitions makes the upper valve close to those of Caprina douuillei Among the Adriatic forms of Offneri 0, (MAssE, 1992} Offneriu nicolinae is the smallest in both the trans- vel se Rnd lollgl'tUdUlal dlmenslons. Offneriu murgensls Massp.

Fig. 10.1,2 This species is known from isolated lower valves Rnd numerous tl RI18VBI'se sections Observed 1I1 col"Bs Rnd 0I1 11RtUI"Rl QUtcI'ops. Tlm coI'I'BspoIldlIlg material derives from the Middle Kharaib mern-