santana formation fossils

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Copyright Ancient Artifacts & Treasures, Inc., 2015

Santana Formation

Fossils y !ohn "cIntosh


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Santana Formation Fossils

The Santana Formationis a geologic#agerstatte $un%isture% fossil accumulation' in

northeastern ra(il)s Araripe asin *here thestates of +ernamuco, +iaui an% Ceara cometogether.

The geological formation, name% after theillage of Santana %o Cariri, lies at the ase of

the Araripe +lateau.

It *as %iscoere% y !ohann atist on Spi- in11/.


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Araripe alley


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The strata *ere lai% %o*n %uring the earlyCretaceous, specically %uring the early

Cenomanian, aout 115 /2 million years ago,in a shallo* inlan% sea. At that time, the SouthAtlantic *as opening up in a long narro*shallo* sea.


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Cretaceous Period

EpochMillions ofYears

Flo*ering plants proliferate, along *ithne* types of insects. "ore mo%ern

teleost sh egin to appear.Ammonoi%ea, elemnites, ru%istiales, echinoi%s an% sponges all

common. "any ne* types of %inosaurs$e.g. Tyrannosaurs, Titanosaurs, %uc4ills, an% horne% %inosaurs' eole on

lan%, as %o usuchia $mo%erncroco%ilians'6 an% mosasaurs an%mo%ern shar4s appear in the sea.

+rimitie ir%s gra%ually replacepterosaurs. "onotremes, marsupials an%placental mammals appear. The

atmospheric C72 are close to present%ay leels.

"aastrichtian 82.1 9 0.2:Campanian ;.< 9 0.2

Santonian

?auteriian =1;2./

alanginian =1;/.

erriasian =1>5


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The Santana Formation earns the %esignation of #agerst@tte %ue toan e-cee%ingly *ell presere% an% %ierse fossil faunal assemlage.Some 25 species of fossil shes are often foun% *ith stomachcontents presere%. There are also ne e-amples of pterosaurs,reptiles an% amphiians, inerterates $particularly insects', an%plants. en %inosaurs are represente% a ne* maniraptor *as

%escrie% in 1//


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Some-amples

A ptera%actyl fossil


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Some Fish-amples

A %isplay from the 2010 "unich "ineral Sho*


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Some Fish-amples

A Beoproscinetes fossil


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Some Fish-amples

A Cladocyclus gardneri fossil


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Some Fish-amples

A Rhacolepis Buccaulis fossil


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Some Insect-amples

A +rotoischnurus Scorpion fossil


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Some Insect-amples

A Araripegomphus an%reneli fossil


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Some Insect-amples

A 7rthopteraneli fossil


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Some Insect-amples

A Thysanura indet fossil


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Some +lant-amples

A uDor%iafossil


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Some +lant-amples

An uni%entie% plant fossil


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Some +lant-amples

An uni%entie% plant fossil


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Someeferences

The Crato Fossil e%s of ra(il, Eai% ". "artill 2008

Santana Fossils An Illustrate% Atlas, !ohn "aisey, 1//1

Evolution Of Fossil Ecosystems Paul Selden !ohn R "udds #$$%

Fossils of the Santana an% Crato Formations, ra(il, Eai% ". "artill 1//

santana formation fossils

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