_____________________________________________________________________________________________________ *Corresponding author: E-mail: udinmwenefosa@gmail.com; Asian Journal of Physical and Chemical Sciences 1(1): 1-10, 2016; Article no.AJOPACS.30942 SCIENCEDOMAIN international www.sciencedomain.org Palynostratigraphy of Lemna Road Transect of Benin Formation, Calabar Flank, Nigeria Asukwo E. Itam 1 , David O. Inyang 1 , Umana S. Umana 1 , Etie B. Akpan 1 and Efosa Udinmwen 1* 1 Department of Geology, University of Calabar, P.M.B. 1115, Calabar, Nigeria. Authors’ contributions This work was carried out in collaboration between all authors. Author AEI wrote the first draft of the manuscript and analyzed the data. Author DOI designed the study. Author EBA checked the protocol of the study. Author USU appraised data quality. Author EU checked the grammar and language. All authors read and approved the final manuscript. Article Information DOI: 10.9734/AJOPACS/2016/30942 Editor(s): (1) Shridhar N. Mathad, Department of Engineering Physics, KLE Institute of Technology, Karnataka, India. Reviewers: (1) David Dotse Wemegah, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana. (2) José Martínez Reyes, University of the Ciénega of Michoacán State, México. (3) Adeniyi Tiwalade Adeyemi, University of Lagos, Nigeria. Complete Peer review History: http://www.sciencedomain.org/review-history/17512 Received 29 th October 2016 Accepted 8 th December 2016 Published 12 th January 2017 ABSTRACT Three lithosections of Benin Formation located along Lemna – Parlimentary Road Transect in Calabar, consisting of clay, gray shale intercalated with peat, mudstone , medium to coarse grained sandstones and pebbly sandstones were studied stratigraphically with a view to discern its depositional environment and age using pollen and spores. Twelve (12) samples were collected from these lithosections and they yieled the following notable palynological taxa: Psilastephanocolporites laevigatus, Retricolporites irregularis, Zonocostite ramonae, Pachydermites diedeorixi, Echiperiporites estelae, Psilatricolporite crassus, Psilatricolporites sp, Retibrevitricolporites obodoensis, Ctenolophonidites costatus and Brevicolporites guinetii for the pollen. Spores (ferns and fungi) include Laevigatosporites discordatus, Acrostichum aureum, Verrucatosporites alienus, Polypoddiaceoisporites retirugatus, Magnastriatites howardi, Fusiformisporites sp and fungi spores. These results show that these sedimentary units are of Early –Miocene to Late –Miocene age. The environment of deposition is alluvial/ fluvial and coastal settings characterized by freshwater swamp / rain forest and mangrove forest. This result infer environment of warm, humid and high rainfall climate of tropical vegetation. Original Research Article