Alachua Formation


The Alachua Formation is a Miocene geologic formation in Florida. The claystones, sandstones and phosphorites of the formation preserve many fossils of mammals, birds, reptiles and fish, among others megalodon.

Fossil content

The formation has provided the following fossils.

Mammals

;RodentsHarrymys magnusNototamias hulbertiPetauristodon pattersoniProheteromys floridanuscf. Miospermophilus sp.Mylagaulus kinseyicf. Texomys sp.
;CarnivoraAmphicyon longiramusBorophagus orcB. pugnatorCynelos caroniavorusEnhydritherium terraenovaeEpicyon haydeniE. saevusEucyon davisiEuoplocyon spissidensLeptarctus ancipidensMetatomarctus canavusOligobunis floridanusOsbornodon iamonensisPhoberocyon johnhenryiZodiolestes freundiBorophagus sp.Phlaocyon sp.Sthenictis sp.
;Ground slothsPliometanastes protistusThinobadistes segnis
;GomphotheresAmebelodon (Konobelodon) brittiAmebelodon sp.
;ArtiodactylsAepycamelus majorDiabolocornis simonsiFloridachoerus olseniFloridameryx floridanusFloridatragulus dolichanthereusHemiauchenia minimaMachaeromeryx gilchristensisNothokemas floridanusParablastomeryx floridanusPediomeryx hemphillensisProsynthetoceras texanusSynthetoceras australisS. cf. tricornatusYumaceras hamiltoniAepycamelus sp.Hemiauchenia sp.Merycoidodon sp.
;SoricomorphaKarstala silvaMiomyotis floridanusPrimonatalus prattaeSuaptenos whiteiLimnoecus sp.Chiroptera indet.
;PerissodactylsAnchitherium clarenceiAphelops malacorhinusA. mutilusArchaeohippus blackbergiCalippus elachistusCalippus hondurensisCalippus maccartyiCormohipparion emslieiC. ingenuumC. plicatileFloridaceras whiteiMenoceras barbouriNannippus aztecusN. morganiN. westoniNeohipparion trampasenseParahippus leonensisProtohippus gidleyiPseudhipparion skinneriTapirus webbiTeleoceras proterumHipparion cf. tehonensecf. Astrohippus sp.Dinohippus sp.
;SireniansMetaxytherium cf. floridanum
;Lipotyphla
;Theriiformes

Birds

Anhinga grandisA. subvolansBoreortalis laessleiEreunetes rayiJacana farrandiNycticorax fidensPhalacrocorax wetmoreiPromilio brodkorbiP. epileusP. floridanusRhegminornis calobatesThomasococcyx philohippus

Reptiles

;TurtlesFloridemys nanaHesperotestudo turgidaMacrochelys auffenbergiPseudemys caelataP. carriP. williamsiTestudo tedwhiteiApalone sp.Deirochelys sp.Pseudemys sp.Trachemys sp.
;CrocodilesAlligator mississippiensisA. olseniThecachampsa sericodonAlligator sp.
;SnakesAnilioides minuatusBoa constrictorCalamagras floridanusOgmophis pauperrimusParaoxybelis floridanusPseudocemophora antiquaPterygoboa sp.
;LizardsPeltosaurus floridanus

Amphibians

;AnuransBufo praeviusHyla goiniProacris mintoniScaphiopus (Scaphiopus) holbrookiMicrohyla sp.Rana sp.
;Salamanders

Fish

;SharksCarcharhinus brevipinnaCarcharhinus limbatusCarcharhinus leucasCarcharhinus plumbeusCarcharias taurusCosmopolitodus hastalisGaleocerdo aduncusNegaprion brevirostris
;RaysPristis sp.
;OthersHemipristis serra