recently published in Cretaceous Research

[jigruiz@unizar.es]

Cretaceous Research, Vol 25 Iss 3

http://www.elsevier.com/locate/issn/01956671 
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S.C. Sweetman. 2004. The first record of velociraptorine dinosaurs (Saurischia, 
Theropoda) from the Wealden (Early Cretaceous, Barremian) of southern England. 
Cretaceous Research, 25(3), 353-364 

Abstract

Velociraptorine dromaeosaurid dinosaur teeth are reported for the first time 
from the Wessex Formation (Early Cretaceous, Barremian) of the Isle of Wight, 
southern England. They represent the second record of the Dromaeosauridae in 
Britain and the first of this clade from strata of the British Wealden Group. 

Author Keywords: Cretaceous; Barremian; Dinosaur; DSDI; Isle of Wight; Teeth; 
Theropoda; Velociraptorinae 
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J. Van Itterbeeck, V.S. Markevich, D.J. Horne. 2004.  The age of the 
dinosaur-bearing Cretaceous sediments at Dashuiguo, Inner Mongolia, P.R. China 
based on charophytes, ostracods and palynomorphs. Cretaceous Research, 25(3), 
391-409 

Abstract

The Dashuiguo Formation has yielded numerous fossils of Probactrosaurus, a 
dinosaur with both iguanodontid and hadrosaurid characteristics. Based on the 
evolutionary position of Probactrosaurus, the dinosaur-bearing sediments have 
been considered to be Aptian?Albian, but new micropalaeontological data 
(charophytes, ostracods and palynomorphs) indicate that they may be as old as 
Barremian. The three charophyte species recovered are indicative of a 
Barremian?Aptian age. A rich fauna of non-marine Ostracoda (13 species in nine 
genera) includes two species described as new, Cypridea pseudomodica sp. nov. 
and C. dashuiguoensis sp. nov., while the remaining eleven species have been 
described previously from Lower Cretaceous sediments of the Gobi Basin and 
adjacent areas in China. Based on the ostracod assemblage, the Dashuiguo 
Formation can be correlated with the Dzun Bayn suite of the Gobi Basin and can 
therefore be regarded as Barremian?Albian in age. The palynomorph assemblage is 
very similar to that described from the nearby Tebch site with an estimated 
Barremian?Early Aptian age and is radiometrically calibrated on the basis of an 
overlying basalt layer. 

Author Keywords: Lower Cretaceous; Inner Mongolia; Charophytes; Ostracods; 
Palynology 

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Jose Ignacio Ruiz-Omeñaca
Departamento de Ciencias de la Tierra
Area de Paleontologia
Universidad de Zaragoza
E-50009 ZARAGOZA, SPAIN

tel: (+34) 976 761000 ext. 3160
fax: (+34) 976 761106
e-mail: jigruiz@unizar.es
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