Ayoub-Hannaa et al.—A new Middle Jurassic bivalve from North Sinai, Egypt
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Figure 7. (1) Reconstruction of the Nicaniella (N.) pisiformis association of which Costinuculana magharensis n. gen. n. sp. is a member. 1 = Nicaniella (N.) pisiformis J. de C. Sowerby; 2 = Ryderia decorata (Douvillé); 3 = Costinuculana magharensis n. gen. n. sp. 4 = Palaeonucula lateralis (Terquem and Jourdy); 5 = Pholadomya (Ph.) inornata (J. de C. Sowerby); 6 = Nuculoma variabilis (J. de C. Sowerby); 7 = Nanogyra nana (J. Sowerby); 8 = Daghanirhynchia angulocostata Cooper; 9 = Gervillella orientalis (Douvillé); 10 = Amphitrochus magharensis, Douvillé; 11 = Africogryphaea costellata (J. de C. Sowerby); 12 = Thalassinoides; (2) mode of life of Costinuculana
magharensis.is = inhalant siphon; es = exhalent siphon; pp. palp proboscides; t = tentacle. While the commarginal ribs aid the burrowing process, the oblique posterior ribs stabilize the shell within the substrate; (3) relative abundance (%) of some species of the trophic nucleus of the Nicaniella (N.) pisiformis association (number denotes taxa in Figure 7.1). Data taken from Abdelhady and Fürsich (2014).
Acknowledgments
The authors greatly appreciate the thoughtful reviews and valuable suggestions by Associate Editor M. Hautmann and two anonymous reviewers. A.A.A. wants to thank the German Academic Exchange Service (DAAD) and the Egyptian Mis- sion (Ministry of High Education of Egypt) for their financial support through the German-Egyptian Research Long-term Scholarship (GERLS).
References
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