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Webology ; 19(3):1242-1261, 2022.
Article in English | ProQuest Central | ID: covidwho-1940172


The study analyses the Scientometric analysis of the Quantitation techniques on the Publications trend has been measured in the field of Palaeontology based on the Scopus data for the period of study between 2005 and 2019. The topmost productive year was 2019 with 998 records (8.28%). Similarly the least productive year was 2005 with 371 records (3.08%). The publications, from 2005 to 2012 (8 years) 45.82% publications were found;whereas from 1913 to 2019 (7 years) 54.18% publications were found. The maximum number of citations in the year 2011 comprises 24683 citations and the minimum number of citations is 3115 in 2019. The maximum number of citations per paper is 39.28 in 2006. The highest exponential growth rate was found to be 1.23 in the year 2010 with 909 publications. The highest AGR was found in the year 2010 (23) followed by the year 2007 (21.83). The maximum RGR value is found to be 0.79 in the year 2006 and the minimum value is found to be 0.08 in the year 2018. Here the correlation coefficient of these two variables is 0.96. The highest CC 0.61 is reported in the year 2019. The overall CC =0.53 which is far from 0. The highest MCC 0.61 has been reported in the year 2019. The lowest MCC 0.40 has been reported in the year in 2006. The overall MCC is 0.53. The journal titled "Journal of Vertebrate Palaeontology" occupied the first position with 1494 publications. The second most productive journal was " PLoS ONE " with 471 publications.

Journal of Paleontology ; 96(4):814-838, 2022.
Article in English | ProQuest Central | ID: covidwho-1900374


Based on extensive new material, 2088 valves resulting from search sampling of ~500 kg of sediment, the Pliocene chiton biodiversity of the Mondego Basin (Portugal) is reassessed. Twelve species were identified, assigned to seven genera. Eight species are new for the Pliocene of Portugal, as well as two of the genera: Hanleya, Acanthochitona. Two taxa are described as new: Ischnochiton loureiroi n. sp. and Lepidochitona rochae n. sp. Until now, the polyplacophoran European Neogene record was too poorly known to be of help in generating a clear picture of the Miocene to present-day biogeography of the group. This new wealth of data from western Iberia, in conjunction with recent data from the Loire Basin Upper Miocene assemblages (France), allows clarification the Late Miocene to Recent eastern Atlantic and Mediterranean biogeography of the Polyplacophora. The northern range of warm-water northeast Atlantic and Mediterranean Polyplacophora experienced a sharp contraction since, at least, Late Miocene to Early Pliocene times. Warm-water chiton species represented in the Upper Miocene of the Loire Basin of NE France (European-West African Province) and the Pliocene of the Mondego Basin of central-west Portugal (Pliocene French-Iberian Province) are today confined to the southern Mediterranean-Moroccan Molluscan Province.UUID: