FIGURE 6. Mellitidae, San Gregorio Formation, Falcón state, Venezuela. 1, Melitella falconensis Cooke, 1961, aboral plate diagram, UNEFM-IF-016. 2, Melitella falconensis Cooke, 1961, CT- exposure, showing Aristotle's lantern and a series of buttresses UNEFM-IF-021. 3, Encope cf. emarginata (Leske, 1778), UNEFM-IF-029. 4, Encope secoensis Cooke, 1961, x-ray, showing internal buttressing and intestine tract cavity UNEFM-IF-025. Scale bar equals 10 mm.