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.Alachua Formation at Fossilworks.org

Mammals Rodents

Harrymys magnus Nototamias hulberti Petauristodon pattersoni Proheteromys floridanus cf. Miospermophilus sp. Mylagaulus kinseyi cf. Texomys sp. Lagomorpha indet. Mylagaulidae indet.

Carnivora

Amphicyon longiramus Borophagus orc B. pugnator Cynelos caroniavorus Enhydritherium terraenovae Epicyon haydeni E. saevus Eucyon davisi Euoplocyon spissidens Leptarctus ancipidens Metatomarctus canavus Oligobunis floridanus Osbornodon iamonensis Phoberocyon johnhenryi Zodiolestes freundi Borophagus sp. Phlaocyon sp. Sthenictis sp. Felidae indet. Mustelinae indet.

Ground sloths Pliometanastes protistus Thinobadistes segnis

Gomphotheres Amebelodon (Konobelodon) britti Amebelodon sp.

Artiodactyls

Aepycamelus major Diabolocornis simonsi Floridachoerus olseni Floridameryx floridanus Floridatragulus dolichanthereus Hemiauchenia minima Machaeromeryx gilchristensis Nothokemas floridanus Parablastomeryx floridanus Pediomeryx hemphillensis Prosynthetoceras texanus Synthetoceras australis S. cf. tricornatus Yumaceras hamiltoni Aepycamelus sp. Hemiauchenia sp. Merycoidodon sp. Antilocapridae indet. Camelidae indet. Ruminantia indet. Tayassuidae indet. Tayassuinae indet.

Soricomorpha

Karstala silva Miomyotis floridanus Primonatalus prattae Suaptenos whitei Limnoecus sp. Chiroptera indet.

Perissodactyls

Anchitherium clarencei Aphelops malacorhinus A. mutilus Archaeohippus blackbergi Calippus elachistus Calippus hondurensis Calippus maccartyi Cormohipparion emsliei C. ingenuum C. plicatile Floridaceras whitei Menoceras barbouri Nannippus aztecus N. morgani N. westoni Neohipparion trampasense Parahippus leonensis Protohippus gidleyi Pseudhipparion skinneri Tapirus webbi Teleoceras proterum Hipparion cf. tehonense cf. Astrohippus sp. Dinohippus sp.

Sirenians Metaxytherium cf. floridanum

Lipotyphla Talpidae indet.

Theriiformes Vespertilionidae indet.

Birds

Anhinga grandis A. subvolans Boreortalis laesslei Ereunetes rayi Jacana farrandi Nycticorax fidens Phalacrocorax wetmorei Promilio brodkorbi P. epileus P. floridanus Rhegminornis calobates Thomasococcyx philohippus Anatidae indet. Cuculidae indet.

Reptiles Turtles

Floridemys nana Hesperotestudo turgida Macrochelys auffenbergi Pseudemys caelata P. carri P. williamsi Testudo tedwhitei Apalone sp. Deirochelys sp. Pseudemys sp. Trachemys sp.

Crocodiles

Alligator mississippiensis A. olseni Thecachampsa sericodon Alligator sp.

Snakes Anilioides minuatus Boa constrictor Calamagras floridanus Ogmophis pauperrimus Paraoxybelis floridanus Pseudocemophora antiqua Pterygoboa sp.

Lizards Peltosaurus floridanus Gekkonidae indet. Scolecophidia indet.

Amphibians Anurans

Bufo praevius Hyla goini Proacris mintoni Scaphiopus (Scaphiopus) holbrooki Microhyla sp. Rana sp.

Salamanders Siren hesterna

Fish Sharks

Carcharhinus brevipinna Carcharhinus limbatus Carcharhinus leucas Carcharhinus plumbeus Carcharias taurus Cosmopolitodus hastalis Galeocerdo aduncus Negaprion brevirostris Otodus megalodon Physogaleus contortus Rhizoprionodon terraenovae Carcharhinus sp. Negaprion sp.

Rays Pristis sp.

Others Hemipristis serra Lepisosteus sp.

Alachua Formation

Bron en licentie