Image of Pachyseris inattesa

Description:

Figure 7.SEM images of Pachyseris inattesa sp. n. showing micro-morphological details. a Adjacent calices in series in specimen KAUST SA492 b Single calice in the same specimen as in a, the white arrow points at the single columellar process, which extends from the inner end of the radial elements reaching the fossa c Another calice in the same specimen (Figure 7a) with multiple columella processes (white arrows) extending from the inner end of the radial elements d A calice of specimen KAUST SA1305, the white arrows point at the finely ornamented columellar processes extending into the fossa from the inner end of the radial elements e Parallel and equal radial elements across a carina (top of the carina indicated by the dashed transparent white line) presenting the typical zigzag pattern of the margin (dashed grey line) f Detail of radial elements as in Figure 7e, showing the upper margin zigzag pattern (dashed grey line) and face ornamentation consisting of clumped granules (cg).