Copernicrinus zamorae gen.et sp.nov.,the oldest thiolliericrinid crinoid(Crinoidea,Echinodermata) from the Bajocian strata of Algeria,Africa  

作　　者：Bartosz J.Pιachno Madani Benyoucef Fayc al Mekki Mohammed Adaci Imad Bouchemla Sreepat Jain Marcin Krajewski Mariusz A.Salamon 

机构地区：[1]Faculty of Biology,Institute of Botany,Jagiellonian University in Krakow,Gronostajowa Street 9,30-387 Krakow,Poland [2]Laboratoire de Géomatique,Ecologie et Environnement,Mustapha Stambouli University of Mascara,DZ-29000 Mascara,Algeria [3]Abou Bekr Belkaid University of Tlemcen,Tlemcen,Algeria [4]Department of Geological Sciences,Faculty of Biological and Agricultural Sciences,Mouloud Mammeri University of Tizi-Ouzou,Tizi-Ouzou,Algeria [5]Adama Science and Technology University,School of Applied Natural Sciences,Department of Applied Geology,P.O.Box 1888,Adama,Ethiopia [6]Faculty of Geology,Geophysics and Environmental Protection,AGH University of Science and Technology,Al.A.Mickiewicza 30,PL-30-059,Krakow,Poland [7]Faculty of Natural Sciences,University of Silesia in Katowice,Bedzinska Street 60,PL-41-200 Sosnowiec,Poland

出　　处：《Journal of Palaeogeography》2024年第2期237-251,共15页古地理学报（英文版）

基　　金：supported by the ‘Male Projekty Badawcze 2022’(Faculty of Natural Sciences,University of Silesia in Katowice) to Mariusz A. Salamon;financially supported by the statutory activities of the Institute of Botany,Faculty of Biology,Jagiellonian University in Krakow(N18/DBS/000002) to Bartosz J. Plachno;AGH-UST Grant No. 16.16.140.315 to Marcin Krajewski。

摘　　要：The thiolliericrinids(Thiolliericrinidae) are comatulids(Comatulida),which retained their stalks as adults.Here,we report a centrodorsal from the Bajocian strata(Middle Jurassic) of the Djebel Kérdacha area,northwestern Algeria(Africa).It is the first thiolliericrinid report from outside of Europe and also the oldest representative of the Thiolliericrinidae whose first occurrence is from the Oxfordian.The crinoid is assigned to Copernicrinus zamorae gen.et sp.nov.The reported new taxon shows strong similarities with the stemless ‘true’comatulids,Solanocrinites;the only difference is the presence of a facet to the stem in Copernicrinus.The closest comparable thiolliericrinid to Copernicrinus is the Oxfordian Thiolliericrinus,interpreted as a descendant of the latter.The origin and overview of all thiolliericrinid representatives are also discussed herein.

关 键 词：Thiolliericrinidae CRINOIDS Coral facies BAJOCIAN Jurassic Algeria Southern Tethys margin 

分 类 号：Q915[天文地球—古生物学与地层学]