000060726 001__ 60726 000060726 005__ 20170323124741.0 000060726 0247_ $$2doi$$a10.1111/j.1096-3642.2008.00410.x 000060726 0248_ $$2sideral$$a60544 000060726 037__ $$aART-2008-60544 000060726 041__ $$aeng 000060726 100__ $$aKriwet, J. 000060726 245__ $$aA new Early Cretaceous lamniform shark (Chondrichthyes, Neoselachii) 000060726 260__ $$c2008 000060726 5060_ $$aAccess copy available to the general public$$fUnrestricted 000060726 5203_ $$aEoptolamna eccentrolopha gen. et sp. nov. (Chondrichthyes, Lamniformes) from the near coastal upper Barremian Artoles Formation (Early Cretaceous) of Castellote (northwestern Spain) is described on the basis of about 50 isolated teeth. This taxon represents one of the earliest lamniform sharks known to date. We hypothesize that most pre-Aptian lamniforms belong to an ancient group characterized, amongst others, by a very weak gradient monognathic heterodont dental pattern, and by tearing-type dentition. There is a nutritive groove in the lingual root protuberance in juveniles of Eoptolamna, which persists in adults. A single pair of symphysial and a pair of upper intermediate teeth might have been present. Consequently, a new family, Eoptolamnidae, is introduced to include the new form, as well as Protolamna and probably Leptostyrax. The Eoptolamnidae represent an ancient family within Lamniformes. The origin of lamniform sharks remains, however, ambiguous despite recent advances. The new Spanish taxon is widespread in the Barremian of north-eastern Spain, and occurs in a wide range of facies from near-coastal to lake deposits. This lamniform also occurs in the Lower Cretaceous of northern Africa. 000060726 536__ $$9info:eu-repo/grantAgreement/ES/MEC/CGL2004-03393 000060726 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000060726 590__ $$a2.098$$b2008 000060726 591__ $$aZOOLOGY$$b16 / 124 = 0.129$$c2008$$dQ1$$eT1 000060726 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000060726 700__ $$aKlug, S. 000060726 700__ $$0(orcid)0000-0003-1732-9155$$aCanudo, J. I.$$uUniversidad de Zaragoza 000060726 700__ $$0(orcid)0000-0001-5125-9651$$aCuenca-Bescós, G.$$uUniversidad de Zaragoza 000060726 7102_ $$12000$$2655$$aUniversidad de Zaragoza$$bDepartamento de Ciencias de la Tierra$$cPaleontología 000060726 773__ $$g154, 2 (2008), 278-290$$pZool. j. Linn. Soc.$$tZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY$$x0024-4082 000060726 8564_ $$s445791$$uhttps://zaguan.unizar.es/record/60726/files/texto_completo.pdf$$yPostprint 000060726 8564_ $$s31634$$uhttps://zaguan.unizar.es/record/60726/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000060726 909CO $$ooai:zaguan.unizar.es:60726$$particulos$$pdriver 000060726 951__ $$a2017-03-23-08:48:38 000060726 980__ $$aARTICLE