Qasr el Sagha Formation

The Qasr el Sagha Formation is a geological formation located in Egypt. The formation is part of the Wadi El Hitan World Heritage Site. The Qasr el Sagha Formation overlies the Birket Qarun Formation and is overlain by the Gebel Qatrani Formation. The sandstones and shales of the formation were deposited in a deltaic to shallow marine environment.Gingerich et al., 2019 It dates to the Late Eocene (middle Priabonian, ).. Retrieved July 2013.

Paleontological significance

Fossils of the early whale genus Saghacetus ("Sagha whale", originally named "Zeuglodon osiris") were first collected at Qasr al Sagha by German explorer Georg August Schweinfurth in January 1886 (a well-preserved dentary).Saghacetus is common in the middle of Qasr el Sagha, but there are few other specimens of archaeocetes whales; the only exception being the enigmatic "Prozeuglodon stromeri", named in 1828 based on specimens from 1904, but never adequately described before their destruction during the bombing of Munich in World War II.

Other fossils found in the formation include:Qasr el Sagha Formation at Fossilworks.org

Mammals Afrotheres Afrotheres Genus Species Presence Stratigraphic memberMaterial Notes ImagesArchaeosirenA. stromeriWestlich von Dimeh, Fayum.A skull & isolated thoracic vertebrae.Synonym of Eosiren libyca.BarytheriumB. cf. B. graveLocality 25 & an unspecified locality.Dir Abu Lifa Member.2 teeth (DPC 2917 & 4071).A basal proboscidean.EosirenE. libycaNorth of Birket Qarun.Temple Member.Skulls & vertebrae.A dugongid.MoeritheriumM. lyonsiVarious localities.Dir Abu Lifa Member.Numerous specimens.A basal proboscidean.PliohyracidaeGenus & species indeterminate½ mile east of Qasr el Sagha Temple.Dir Abu Lifa Member.A mandible (AMNH 13445).A large hyrax formerly thought to be a juvenile specimen of Moeritherium gracile.ProtosirenP. sp.Mandible.Actually from the Gehannam Formation or Birket Qarun Formation.

Ferae Ferae Genus Species Presence Stratigraphic memberMaterial Notes ImagesApterodonA. saghensis Locality 25.Dir Abu Lifa Member.Left mandibular fragment. A hyaenodont. A. sp.Three localities.Dir Abu Lifa & Temple member.Mandibular elements & 2 humeri.A hyaenodont.cf. Hyaenodoncf. H. brachycephalus"Near Qasr el Sagha".An eroded left mandibular corpus (AMNH 128553).A hyaenodont.

Ungulates Ungulates Genus Species Presence Stratigraphic memberMaterial Notes Imagescf. Bothriogenyscf. B. sp.Locality 25.Dir Abu Lifa Member.A weathered right distal humerus & shaft.An anthracothere.DorudonD. atrox"Feinktirnigem graugriinlichem Sandstein der Saghastufe, Fayum".Remains of an immature individual now destroyed.A basilosaurid whale.ProzeuglodonP. stromeri"Feinktirnigem graugriinlichem Sandstein der Saghastufe, Fayum".Remains of an immature individual now destroyed.Junior synonym of Dorudon atrox.SaghacetusS. osirisMultiple localities.Temple Member.Multiple specimens.A basilosaurid whale.StromeriusS. nidensisBlanckenhorn's interval II 5a of the Saghastufe.Temple Member.2 vertebral sequences (UM 100140 & BSPM 1902.XI.504-510).A basilosaurid whale.ZeuglodonZ. elliotsmithiiNorth of Birket Qarun.An endocast.Junior synonym of Saghacetus osiris.Z. sensitivusGar-el-Gehannem.Temple Member.An endocast.Junior synonym of Saghacetus osiris.Z. zitteli"Zeuglodonberg".A fragmentary rostrum & 3 articulated cervical vertebrae.Junior synonym of Saghacetus osiris.

Reptiles Squamates Squmates Genus Species Presence Stratigraphic memberMaterial Notes ImagesGigantophisG. garstini"An unspecified locality north of Birket Qarun, Fayum".Vertebrae & ribs.A madtsoiid snake.

Testudines Testudines Genus Species Presence Stratigraphic memberMaterial Notes ImagesAndrewsemysA. libycaAn almost complete & well-preserved shell.A podocnemidid.CordichelysC. sp.North of Birket Qarun.A nearly complete cranium lacking only the premaxillae (UMMP 13994).A podocnemidid.Stereogenys'S.' libycaAn almost complete & well-preserved shell.Reassigned to Andrewsemys.S.(?) sp.North of Birket Qarun.A mostly-complete carapace & plastron (CGM 8718).A podocnemidid.

Fish Misrichthys stromeri Carcharhinus aff. frequens Odontorhytis aff. pappenheimi ?Jacquhermania attiai Carcharhinus sp. Coupatezia sp. Ouledia sp. Pastinachus sp. Rhinobatos sp. Scyliorhinus sp. ?Sphyrna sp. Pristidae indet. "Cretolamna" twiggsensis

Qasr el Sagha Formation

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