Turonian-Santonian echinoids from Egypt

Geodiversitas

Mahmoud Moustafa Azab¹  Marouf Abdel-Aty Mohamed Abdelhamid¹ 

关键词: Cretaceous;    Turonian;    Coniacian-Santonian;    taxonomy;    bio stratigraphy;    paleobiogeography;    echinoids;    Egypt;    new combinations;    new species;    Crétacé;    Turonien;    Coniacien-Santonien;    taxonomie;    biostratigraphie;    paléobiogéographie;    échinoïdes;    Égypte;    combinaisons nouvelles;    espèces nouvelles;   

DOI  :  10.5252/g2012n3a7

学科分类：生物科学（综合）

来源: Museum National d Histoire Naturelle

【 摘 要 】

Thirtyechinoidspecies(18regularand12irregular)andanundeterminedspeciesbelongingto14generaarestudiedfromtheTuronian-Santoniansequence(14speciesfromTuronian,twospeciesfromTuronian-Santonianand14speciesfromConiacian-Santonian)ofAbuRoash,WadiDakhlandWadiAbuQaada,Egypt.Twonewspeciesareestablished:Thylechinus(Thylechinus)sinaiensisn.sp.fromtheTuronianofWadiAbuQaadaandToxasterdakhlensisn.sp.fromtheTuronianofWadiDakhl.Orthopsisovata(Coquand,1862),whichisknowninotherpartsoftheTethyanregion,isreportedforthefirsttimefromEgypt.Therankofonesubspeciesisraisedtospecieslevel:Coenholectypusroachensis(Fourtau,1914)n.stat.Thegenericnameofthreespeciesischanged:EchinobrissushumeiFourtau,1906ischangedtoPetalobrissushumei(Fourtau,1906)n.comb.;Periasterduncani(Fourtau,1906)andPeriasterroachensisGauthier,1900aretransferedtothegenusMecasterPomel,1883.TheontogeneticchangesofMecasterturonensis(Fourtau,1921)aredescribed.Thebiostratigraphyandpaleobiogeographyofthefaunaarediscussed.

【 授权许可】

Unknown