The Eutaw Formation is a geological formation in North America, within the U.S. states of Alabama, Georgia, and Mississippi. The strata date from the late Coniacian to the early Santonian stage of the Late Cretaceous. It consists of the upper Tombigbee Sand Member and an unnamed lower member. Dinosaur, mosasaur, and pterosaur remains have been recovered from the Eutaw Formation.
Vertebrate paleofauna
Cartilaginous fish Cartilaginous fish of the Eutaw Formation Taxa Species State Stratigraphic position Abundance Notes ImagesArchaeolamnaA. kopingensisAlabamaA lamniform sharkBorodinopristisB. schwimmeriAlabamaA sclerorhynchidBrachyrhizodusB. mcnultyiAlabamaMyliobatidsB. wichitaensisCarchariasC. sp.AlabamaA lamniform sharkCantioscylliumC. globidensAlabamaCarpet sharksC. decipiens (=C. meyeri or C. saginatus?)ChiloscylliumC. greeniAlabamaA hemiscylliidCretodusC. semiplicatusAlabamaA lamniform sharkCretalamnaC. appendiculataAlabamaOtodontidsC. serrataCretoxyrhinaC. mantelliAlabamaA lamniform sharkEdaphodonE. sp.AlabamaA chimaeraHeterodontus?H. sp.AlabamaA heterodontiformHybodusH. sp.AlabamaA hybodontidIschyrhizaI. miraAlabamaA rajiformLissodus (=Lonchidion?)L. sp.AlabamaA hybodontidParanomotodonP. angustidensAlabamaA lamniform sharkPseudocoraxP. laevisAlabamaA lamniform sharkPseudohypolophus (=Brachyrhizodus?)P. mcnultyiAlabamaA rajiformPtychodusP. mortoniAlabamaPtychodontidsP. polygyrusP. rugosusPtychotrygonP. triangularis (=P. vermiculata and/or P. chattahoochiensis?)AlabamaA ptychotrygonidRajiformes indet.AlabamaScapanorhynchusS. raphiodonAlabamaLamniform sharksS. texanusSclerorhynchus?S. sp.AlabamaA rajiformSqualicoraxS. falcatusAlabamaLamniform sharksS. kaupiS. pristodontusSquatinaS. hasseiAlabamaA squatinid
Bony fish Bony fish of the Eutaw Formation Taxa Species State Stratigraphic position Abundance Notes ImagesAlbulaA. dunkleiAlabamaA bonefishAnomoeodusA. phaseolusAlabamaA pycnodontidAtractosteusA. sp.?AlabamaA garBananogmiusB. sp.AlabamaA plethodidBelonostomusB. sp.AlabamaAn aspidorhynchiformEnchodusE. petrosusAlabamaAn enchodontidHadrodusH. priscusAlabamaA pycnodontidLepisosteusL. sp.AlabamaA garMawsoniaM. sp.AlabamaA coelacanthiform fishPhacodusP. puncatatusAlabamaA pycnodontiformProtosphyraenaP. sp.AlabamaA pachycormiformStratodusS. apicalisAlabamaAn aulopiformXiphactinusX. audaxAlabamaAn ichthyodectid
Turtles Turtles of the Eutaw Formation Taxa Species State Stratigraphic position Abundance Notes ImagesChedighaiiC. barberiAlabamaA bothremydidProtostegaP. gigasAlabamaA protostegidThinochelysT. sp.AlabamaToxochelysT. sp.AlabamaTrionychidae indet.Alabama
Plesiosaurs Plesiosaurs of the Eutaw Formation Taxa Species State Stratigraphic position Abundance Notes ImagesDiscosaurusD. vetustusAlabamaAn elasmosauridElasmosauridae indet.Alabama
Mosasaurs Mosasaurs of the Eutaw Formation Taxa Species State Stratigraphic position Abundance Notes ImagesClidastesClidastes sp. Alabama A mosasaurine EonatatorE. sternbergii Alabama A halisaurine E. sternbergii was formerly classified as Halisaurus sternbergiiGlobidensG. alabamaensisAlabamaA mosasaurine PlatecarpusP. tympaniticus Alabama A plioplatecarpinePlioplatecarpusP. sp.AlabamaA plioplatecarpine SelmasaurusS. russelliAlabama A plioplatecarpine TylosaurusT. nepaeolicusAlabama TylosaurinesT. proriger
Crocodylians Crocodylians of the Eutaw Formation Genus Species State Stratigraphic position Abundance Notes ImagesBorealosuchusB. sp.AlabamaAn eusuchianDeinosuchusD. rugosus?AlabamaAn alligatoroidLeidyosuchusL. sp.AlabamaAn alligatoroid
Ornithodires Dinosaur feathers have been found in the Ingersoll Shale of Georgia, which is a subunit of the Eutaw Formation. Indeterminate hadrosaurid remains have been found in Mississippi. Ornithomimosaurs of medium-size and large-size have also been unearthed in Mississippi.
Ornithodires of the Eutaw Formation Genus Species State Stratigraphic position Abundance Notes ImagesLophorhothonL. atopusAlabamaA hadrosauromorph dinosaurPteranodonIndeterminate Georgia A pteranodontid pterosaur
See also
List of fossil sites
References