| | | | Andr., _Eosiren libyca_, | | | | Andr., _Zeuglodon | | | | Osiris_, Dames, | | | | _Gigantophis Garstini_, | | | | Andr., _Pterosphenus | | | | Schweinfurthi_, Andr., | | | | _Psephophorus eocænus_, | | | | Andr., _Thallassochelys | | | | libyca_, Andr., | | | | _Podocnemis antiqua_, | | | | Andr., _P. Stromeri_, v. | | | | Rein., _Stereogenys | | | | Cromeri_, Andr., _S. | | | | podocnemioides_, v. | | | | Rein., _Tomistoma | | | | africanum_, Andr., with | | | | siluroids and _Propristis MIDDLE | | | | Schweinfurthi_, Dames. EOCENE |PARISIAN |--------+-----------+--------------------------- | | | |_Birket el Qurûn Series | | | |(Operculina-Nummulite | | | |beds)_. | | | | | | | | Sandstones and clays, | | | | with sandy limestones, | | | | and one or more well | | | | marked concretionary | | | | sandstones weathering | | | | into large globular | | | | masses. | | | | | | | | _Nummulites Fraasi_, de | | | | la Harpe, _N. Beaumonti_, | | | 50 | _Operculina discoidea_, | | | | Schwag., _Qerunia | | | | cornuta_, May.-Eym., | | | | _Plicatula polymorpha_, | | | | Bell., _Pectunculus | | | | pseudopulvinatus_, Orb., | | | | _Cardita Viquesneli_, | | | | d’Arch., _Cardium | | | | Schweinfurthi_, | | | | May.-Eym., _Venus | | | | plicatella_, May.-Eym.,