Studies on the free-living protozoan fauna of estuaries in the coastal zone of Tamil Nadu, India Author Bindu, L. text Records of the Zoological Survey of India 2021 121 1 61 75 journal article 10.26515/rzsi/v121/i1/2021/141506 2581-8686 13186453 49. Tintinnopsis dadayi Kofoid, 1905 Material examined : Mi-179, 3 ex. , Kaliveli estuary, 22.vi.2013 . Diagnosis : Lorica elongated and compressed; a cylindrical collar and a globose bowl; irregular oral rim; aboral end slightly pointed; total length 45-65µm. Distribution in India : Kerala , Tamil Nadu , West Bengal .