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Campinasuchus, new Brazilian baurusuchid (free pdf)



From: Ben Creisler
bh480@scn.org

ISMAR DE SOUZA CARVALHO, VICENTE DE PAULA ANTUNES TEIXEIRA, MARA LÚCIA DA
FONSECA FERRAZ, LUIZ CARLOS BORGES RIBEIRO, AGUSTÍN GUILLERMO MARTINELLI,
FRANCISCO MACEDO NETO, JOSEPH J. W. SERTICH, GABRIEL CARDOSO CUNHA,
ISABELLA CARDOSO CUNHA  & PATRÍCIA FONSECA FERRAZ  (2011)
Campinasuchus dinizi gen. et sp. nov., a new Late Cretaceous baurusuchid 
(Crocodyliformes) from the Bauru Basin, Brazil
Zootaxa 2871: 19?42   (2011) 
free pdf:   http://www.mapress.com/zootaxa/2011/f/zt02871p042.pdf

A remarkably diverse terrestrial mesoeucrocodylian fauna has been recovered
from the continental Cretaceous of the Bauru Basin in fluvial and
lacustrine deposits. Members of at least six distinct groups are now
recognized, including notosuchids, sphagesaurids, candidodontids,
peirosaurids, trematochampsids, and baurusuchids. These mostly terrestrial
crocodyliforms potentially developed ecological strategies that allowed
them to live in a hot and arid climate during the Cretaceous. A new genus
and species of Baurusuchidae, Campinasuchus dinizi gen. et sp. nov., is
established on the basis of several partial skulls and skeletons from the
Turonian-Santonian Adamantina Formation. This taxon is notable for its
relatively short, anteriorly tapering snout, marked maxillary heterodonty
with third maxillary and fourth dentary teeth extremely enlarged relative
to other teeth, and the presence of a large anteroposterior depression on
each palatine between the palatal fenestrae. The presence of yet another
crocodyliform from the Adamantina Formation reinforces the idea that
aridity, or maybe a seasonally warm and dry climate alternating with
periods of higher rainfall, drove the diversification of terrestrial
crocodyliforms throughout the Late Cretaceous.

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