Crepis gurjarensis Guha & Gopikrishna, 2005

Sonar, Mohan A., Pawar, Ravi V. & Wayal, Dnyaneshwar V., 2022, Newly discovered species of cheilostomatid Bryozoa from the Miocene of western Kachchh, Gujarat, India, European Journal of Taxonomy 821, pp. 16-39 : 27-28

Crepis gurjarensis Guha & Gopikrishna, 2005

Fig. 7 ; Table 6

Crepis gurjarensis Guha & Gopikrishna, 2005d: 146 , pl. II fig. 13, pl. III fig 1.

Material examined

INDIA • 11 specs; yellow limestone of the section south of Walaram Tirth Dham near Murachbann , Aquitanian, lower Miocene, Kharinadi Formation; 23°39′15″ N, 68°58′02″ E; Jan.–Feb. 2012; Sonar leg.; GIS/B 0504 to 0514 .

Description

Colony adnate, delicate, encrusting echinoid test. Autozooids arranged in uniserial chains with branching on both sides. New uniserial branches of autozooids starting from distolateral buds oriented at angle of 90° to the parent branch ( Fig. 7A ). Autozooids elongate, pyriform. Opesia semioval with concave proximal edge, occupying roughly ⅓ of the frontal area. Cryptocyst well developed, smooth, descending into opesia. Marginal rim smooth, indistinct. Lateral walls smooth, irregular in basal contact. Gymnocyst smooth, tapering proximally, shrinks in proximal cauda ( Fig. 7B ). Ancestrula and ooecium not seen.

Remarks

The present species agrees with all the essential characters of Crepis gurjarensis Guha & Gopikrishna, 2005 .

Figures

Fig. 7. Crepis gurjarensis Guha & Gopikrishna, 2005 (GIS/B 0504). A. General view of the colony encrusting an echinoid test showing uniserial chains with branching on both sides. B. Close-up of an autozooid showing oval opesia, cryptocyst and well-developed gymnocyst.