Holotype of Cyrenoida implexa sp. nov. (MZSP 54637, 7.2 mm, H 7.3 mm, W 4.3 mm). 1. Left valve, outer view; 2. Right valve, outer view; 3. Left valve, inner view; 4. Right valve, inner view; 5. Whole dorsal view; 6. Right hinge under SEM; 7. Left hinge under SEM. Scale bar: 200 μm (6, 7).

 
 
  Part of: Valentas-Romera BL, Simone LRL, Marques RC (2024) A new species of Cyrenoida (Bivalvia, Cyrenoididae) from the Western Atlantic, with remarks on Cyrenoididae anatomy. Zoosystematics and Evolution 100(2): 543-553. https://doi.org/10.3897/zse.100.121238