Five species of Steginoporella from the Palaeogene rocks of the Western Kachchh, Gujarat are described in this paper. Out of five steginoporellids, S. mathuri n.sp., S. murachbanensis n.sp. and S. chiplonkari n.sp. are new to science; S. bhujensis is already reported from this region; and Steginoporella sp. indet is reported for the first time in these rocks. All these species show Indo-Pacific affinities. The occurrence of Steginoporella from Middle Eocene to Early Miocene indicates that two stages of radiation had taken place in Kachchh. Phylogenetic analysis using PAST programme indicates that S. mathuri is very distinct from other species of Steginoporella; while S. murachbanensis and S. bhujensis form the same clade.

Seven species of Calloporid (family Calloporidae Norman, 1903) Bryozoa are described from the Cenozoic sediments of the western Kachchh, Gujarat, India. Among these Planicellaria walsariensis, Dionella sp., Pyriporella charopadiensis, P. vadsariensis and Wilbertopora sp. are new and the other species viz; Crassimarginatella blandfordi and Reptoporina chhasraensis are reported for the second time from these sediments. The phylogenetic analysis suggests all the species of Calloporid bryozoans are monophyletic i.e. all of these species have common ancestor.

Here we report on fourteen species of Thalamoporellidae (Bryozoa, Cheilostomatida) from Paleogene–Neogene sediments of the western Kachchh, Gujarat, India. Among these, eleven species are already known from these sediments, whereas two species, namely Thalamoporella badvei n. sp. and T. bhujensis n. sp., are new to science and one is left in open nomenclature. New combinations for two species originally placed in the genus Thalamoporella are also suggested: Dibunostoma transversum n. comb. and Reniporella reniformis n. comb. The genus Reniporella currently placed in the family Steginoporellidae is here re-assigned to Thalamoporellidae mainly based on the position of the opesiules.

Four species of Schizoporellid (family Margarettidae Harmer, 1957) Bryozoa are described from the Cenozoic sediments of the Western Kachchh, Gujarat, India. Among these Margaretta amplipora, and M. hariparensis are new to science and the other species viz; M. guhai nom. nov. and M. rajui Guha & Gopikrishna, 2007 are reported for the second time from these sediments. The erect delicate articulated zoarial growth forms of these species indicate shallow water, moderate to high energy settings. The phylogenetic analysis suggests all the species of Margaretta are monophyletic i.e. all of these species have common ancestor.

Paper describes six species of neocheilostomine bryozoans occurring in the Middle Eocene-Early Miocene rocks of Western Kachchh, Gujarat, India. Taxa belong to the families Quadricellariidae Gordon, 1984, Vinculariidae Busk, 1852 and Poricellariidae, Harmer, 1926. Of these three species are new. These are Vincularia feddeni nov sp. Poricellaria waioriensis nov sp. and Poricellaria sakurkari nov sp. Two species, Nellia tenella (Lamarck, 1816) and Vincularia kutchensis (Tewari & Srivastava, 1967) already known from this region, are further reported here. Poricellaria complicata (Reuss, 1869)? is reported for the first time and indicates oldest record from India so far. Phylogenetic analysis using PAST programme indicates that Poricellariids and Vinculariids have not evolved from the same ancestor Nellia tenella (Lamarck, 1816)