000075514 001__ 75514
000075514 005__ 20200117221652.0
000075514 0247_ $$2doi$$a10.1017/pab.2018.16
000075514 0248_ $$2sideral$$a107946
000075514 037__ $$aART-2018-107946
000075514 041__ $$aeng
000075514 100__ $$0(orcid)0000-0003-4632-533X$$aArenillas, I.$$uUniversidad de Zaragoza
000075514 245__ $$aBlooms of aberrant planktic foraminifera across the K/Pg boundary in the Western Tethys: causes and evolutionary implications
000075514 260__ $$c2018
000075514 5060_ $$aAccess copy available to the general public$$fUnrestricted
000075514 5203_ $$aWe report a detailed study of the different categories and types of abnormal morphologies in planktic foraminifera recognizable in the lowermost Danian, mainly from the El Kef and Ain Settara sections, Tunisia. Various types of abnormalities in the test morphology were identified, including protuberances near the proloculus, abnormal chambers, double or twinned ultimate chambers, multiple ultimate chambers, abnormal apertures, distortion in test coiling, morphologically abnormal tests, attached twins or double tests, and general monstrosities. Detailed biostratigraphic and quantitative studies of the Tunisian sections documented a major proliferation of aberrant planktic foraminifera (between approximately 5% and 18% in relative abundance) during the first 200 Kyr of the Danian, starting immediately after the Cretaceous/Paleogene (K/Pg) boundary mass extinction (spanning from the Guembelitria cretacea Zone to the lower part of the P. pseudobulloides Zone). This contrasts with the proportionately low frequency of aberrant tests (generally <2%) identified within the uppermost Maastrichtian, suggesting more stable environmental conditions during the last similar to 50-100 Kyr of the Cretaceous. Two main pulses with abundant aberrant tests were recognized in the earliest Danian, the one recorded in the well-known K/Pg boundary clay being the more intense of those (maxima of >18%). These main pulses of aberrants coincide approximately with relevant quantitative and evolutionary turnovers in the planktic foraminiferal assemblages. In this paper, we explore the relation of these high values of the foraminiferal abnormality index with the environmental changes induced by the meteorite impact of Chicxulub in Yucatan, Mexico, and the massive eruptions of the Deccan Traps, India.
000075514 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E05$$9info:eu-repo/grantAgreement/ES/MINECO/BES-2016-077800$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2015-64422-P
000075514 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000075514 590__ $$a2.354$$b2018
000075514 591__ $$aPALEONTOLOGY$$b6 / 56 = 0.107$$c2018$$dQ1$$eT1
000075514 591__ $$aBIODIVERSITY CONSERVATION$$b21 / 58 = 0.362$$c2018$$dQ2$$eT2
000075514 591__ $$aECOLOGY$$b79 / 164 = 0.482$$c2018$$dQ2$$eT2
000075514 591__ $$aEVOLUTIONARY BIOLOGY$$b28 / 50 = 0.56$$c2018$$dQ3$$eT2
000075514 592__ $$a1.412$$b2018
000075514 593__ $$aAgricultural and Biological Sciences (miscellaneous)$$c2018$$dQ1
000075514 593__ $$aPaleontology$$c2018$$dQ1
000075514 593__ $$aEcology, Evolution, Behavior and Systematics$$c2018$$dQ1
000075514 593__ $$aEcology$$c2018$$dQ1
000075514 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000075514 700__ $$0(orcid)0000-0003-0063-8752$$aArz, J.A.$$uUniversidad de Zaragoza
000075514 700__ $$0(orcid)0000-0001-7302-5901$$aGilabert, V.$$uUniversidad de Zaragoza
000075514 7102_ $$12000$$2655$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Paleontología
000075514 773__ $$g44, 3 (2018), 460-489$$pPaleobiology$$tPALEOBIOLOGY$$x0094-8373
000075514 8564_ $$s1518031$$uhttps://zaguan.unizar.es/record/75514/files/texto_completo.pdf$$yVersión publicada
000075514 8564_ $$s100076$$uhttps://zaguan.unizar.es/record/75514/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000075514 909CO $$ooai:zaguan.unizar.es:75514$$particulos$$pdriver
000075514 951__ $$a2020-01-17-22:09:36
000075514 980__ $$aARTICLE