Labioporella hariparensis Guha & Gopikrishna 2007

Autor: Sonar, Mohan A., Pawar, Ravi V., Wayal, Dnyaneshwar V.
Rok vydání: 2022
Předmět:
DOI: 10.5281/zenodo.6581854
Popis: Labioporella hariparensis Guha & Gopikrishna, 2007 Fig. 11; Table 10 Labioporella hariparensis Guha & Gopikrishna 2007b: 805, pl. I figs 4–6. Material examined INDIA • 16 specs; argillaceous limestone in Waior-Charopadi stream near Waghot, Burdigalian, lower Miocene, Chhasra Formation; 23°25′55″ N, 68°42′40″ E; Jan.–Feb. 2012; Pawar leg.; GIS/B 0533 to 0548. Description Colony unilaminar, encrusting. Autozooids hexagonal, rounded distally (Fig. 11A). Lateral margins beaded, thickly calcified, raised in relation to autozooidal frontal shield; autozooidal boundaries also marked by thin grooves. Cryptocyst coarsely granular, occupying nearly ⅔ of autozooidal frontal surface and descending smoothly into the orifice; polypide tube slender, opening into the orifice with mediumsized lateral indentations (Fig. 11B). Two conspicuous tubercles at distolateral corners of each autozooid (Fig. 11C). Opesia rounded quadrangular, wider than long with smooth curved distally. Avicularia small, interzooecial, oval; cryptocyst narrow; opesia large, oval with broader proximal; rostrum thick, prominent, next distal zooid arise from rostral margin of avicularia (Fig. 11D). Remarks The present species shows a superficial resemblance to Labioporella filiparietis Canu & Bassler, 1935 in the shape of the autozooids and the polypide tube but differs in having a granular cryptocyst, and the presence of avicularia and tubercles. The Aquitanian species Labioporella bassleri Guha & Gopikrishna 2007 from Kharinadi Formation differs in not having avicularia or tubercles. The Gran Canarian Pliocene Labioporella sp. Sendino & Taylor, 2014 differs from the present species in the absence of avicularia, a stout polypide tube and the distal margin of the opesia is higher than wide.
Published as part of Sonar, Mohan A., Pawar, Ravi V. & Wayal, Dnyaneshwar V., 2022, Newly discovered species of cheilostomatid Bryozoa from the Miocene of western Kachchh, Gujarat, India, pp. 16-39 in European Journal of Taxonomy 821 on pages 31-34, DOI: 10.5852/ejt.2022.821.1795, http://zenodo.org/record/6580782
{"references":["Guha A. K. & Gopikrishna K. 2007 b. New fossil steginoporellid and schizoporelloid species (Bryozoa, Cheilostomata) from the Tertiary sequence of western Kachchh, Gujarat, India. Journal of the Geological of Society India 69: 801 - 812.","Canu F. & Bassler R. S. 1935. New species of Tertiary cheilostome Bryozoa from Victoria, Australia. Smithsonian miscellaneous collections 93: 1 - 54.","Sendino C. & Taylor P. D. 2014. Pliocene bryozoans from Gran Canaria. In: Rosso A., Wyse Jackson P. N. & Porter J. S. (eds) Bryozoan Studies 2013: 229 - 239. Museo delle Scienze, Trento. http: // www 2. muse. it / pubblicazioni / riviste. asp? tipo = 18"]}
Databáze: OpenAIRE
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