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Taphonomy of Late Cretaceous dinosaur fossils in eastern China + Jurassic flora (free pdfs)

Ben Creisler

Recent papers in Chinese:

Wang Nengsheng, Kuang Hongwei, Liu Yongqing, Peng Nan, Xu Huan,Zhang
Peng, Wang Mingwei, Wang Baohong & An Wei (2015)
Taphonomic characteristics of the Late Cretaceous cluster dinosaur
fossils in eastern China and comparison between domestic and abroad.
Journal of Palaeogeography [Chinese edition] 17 (5): 593-610
DOI: 10.7605/gdlxb.2015.05.049

pdf download:


This paper analyzes the Late Cretaceous dinosaur bones according to
stratigraphic successions,dinosaur species,articulation and
association,diversity,the quantity and quality of preservation and the
arrangement of dinosaur fossils from the eastern China by method of
taphonomy and sedimentology, and make a comparison between demestic
and abroad from the points of occurrence age, and taphonomic facies
and characteristics. The studies suggest that: Although the concrete
preservation times are different,the species, taphonomic facies and
characteristics are similar,which reflecting the similarity of
palaeoenvironment, palaeoecology, and palaeoclimate during the Late
Cretaceous in a global scale. (1) The burial process of dinosaur bones
in China during the Late Cretaceous can be divided into two stages:
the early stage of Cenomanian and the late stage of Santonian to
Maastrichtian. Foreign burial events appeared during the late
Campanian in America and Mongolia,and the Campanian-Maastrichtian
transitional period and Maastrichtian in Europe. (2) In China,bones
were buried mainly in purple rocks of alluvial fan facies and fluvial
facies,and the dinosaur species are mainly Ornithopod hadrosaurs and
theropods. Compared with dinosaur mass extinction abroad, they were
mainly preserved in lacustrine and flood plain. Hadrosaurs and
ceratopsids were flourishing in America and Mongolia, while dinosaurs
in Europe and Mongolia are different. The characteristics are
different in different successions,which are closely related with
palaeogeography,palaeoenvironment and palaeoclimate. (3) By
combination of taphonomic and basin evolution characteristics,it
concluded that burial types are autochthonous and allochthonous,and
the probable burial comprehensive factors are: the change of
palaeogeography,volcanism,high temperature etc.,then a taphonomic
model were built. It is significant for further study of bone
taphonomy and palaeogeography,palaeoenvironment and palaeoclimate,and
proposes many new materials and evidence for the research of
palaeogeography,palaeoenvironment and palaeoclimate.


Deng Shenghui, Shang Ping, Lu Yuanzheng, Zhao Yi, Li Xin, Fan Ru &
Dong Shuxin (2015)
A late Early Jurassic flora from Xilinhot Basin of Inner Mongolia,with
discussions on coeval climate in China.
Journal of Palaeogeography [Chinese edition] 17 (5): 617-634
DOI: 10.7605/gdlxb.2015.05.051

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The flora from the Jurassic Hongqi Formation of the Xilinhot
Basin,Inner Mongolia,North China,is composed of 37 species in 21
genera:Equisetites sp. and Neocalamites sp. of Equisetales;Hausmannia
ussuriensis Kryshtofovich,H. leeiana Sze,Coniopteris bella Harris,C.
sp.,Eboracia lobifolia(Phillips)Thomas,Todites
williamsonia(Bronign.)Seward,Cladophlebis angutula (Heer)Fontaine,Cl.
asiatica Chow et Yeh,Cl. cf. asiatica Chow et Yeh,Cl. haiburnensis(L.
et H.)Bronigniart,Cl. hsiehiana Sze, Cl.
lobifolia(Phillips)Bronigniart, Cl.ingens Harris,Cl.pseudoraciborskii
Srebrodolskaja,Cl. shansiensis,Cl. scariosa Harris Sze and Cl. sp.
nov. of Filicopsida;Anomozamites turkmenicus Burakova,Nilssoniopteris
angustifolia Wang,Ptilophyllum contiguum Sze,Pterophyllum
sp.,Nilssonia sp. nov. and Ctenis sp. of Cycadopsida;Ginkgoites
ferganensis Brick,Ginkgoites hottonii (Sternb.)Heer, Phoenicopsis
angustifolia Heer,Czekanowskia setacea Heer, Cz. latifolia
Turutanova-Ketova and Sphenobaiera sp. of Ginkgopsida;Elatocladus
sp.1, Elatocladus sp.2,Podozamites eichwaldi Schimper,Pityophyllum
longifolium(Nath.)Moeller and Pityophyllum sp. of Coniferopsida and
seed Carpolithus sp. The flora is characterized by abundant ferns and
appearance of Coniopteris and Eboracia of the Dicksoniacea and some
thermophilous elements. The thermophilous plants include
dipteridaceous fern Hausmannia and Ptilophyllum of Bennettitales. The
age of the flora is late Early Jurassic and most possibly the
Toarcian. The age of the Hongqi Formation is chiefly late Early
Jurassic and its upper part is possibly the early Middle Jurassic. The
appearance of the climate sensitive plants,particularly the
south-type(thermophilous)elements,indicates that the Xilinhot Basin
was located in the warm temperate zone-subtropic zone during the late
Early Jurassic. It was warmer than that of the early Early Jurassic
and early Middle Jurassic,indicating a temperature raising event in
the late Early Jurassic. Based on the palaeontological and sedimentary
data, there existed 5 palaeoclimatic regions during the late Early
Jurassic in China,namely the eastern Heilongjiang warm-cool climatic
region,North China warm-temperate and warm-humid climatic
region,central China tropic-subtropical semi-arid and semi-humid
climatic region,central-southern China tropic-subtropical arid
climatic region and the Tibet-western Yunnan tropical arid climatic
region. The boundary between the warm-temperate warm-humid climatic
region and the tropic-subtropical semi-arid and semi-humid climatic
region was about 4-8 degrees of latitude northwards than both in the
early Early Jurassic and early Middle Jurassic,also indicating a
temperature arising event occurred in the late Early Jurassic. This
climatic event most possibly happened in the Toarcian of Early
Jurassic and is likely the response of the terrestrial ecological
system to the Toarcian Oceanic Anoxic Event(T-OAE).


Also, in English:

ZHAO Miao, SUN Chunlin, David L. Dilcher, ZHAO Zhe and NA Yuling (2015)
Anomozamites (Bennettitales) from Middle Jurassic Haifanggou
Formation,western Liaoning,China
Global Geology 18(2) 75-87

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The Middle Jurassic Hangfanggou Formation is well exposed in
Shangsanjiao and Xiasanjiao villages area, Baimashi town of Huludao,
western Liaoning, China. Recently, abundant fossil plants were
collected from the Hangfanggou Formation. One new species,Anomozamites
sanjiaocunensis sp. nov. (Bennettitales), is described in this study.
This is the first report of the genus Anomozamites from the Haifanggou
Formation based upon the leaf morphology and epidermal structures. The
discovery of the new species extends significantly the stratigraphic
and geographic distribution of Anomozamites in the Middle Jurassic. It
also shows that Anomozamites was a common member of Bennettitales once
lived in the Middle Jurassic warm temperate region. The new species
also improves the knowledge on understanding the leaf morphology,
epidermal features and the diversity of Anomozamites during the Middle
Jurassic. The epidermal characters of the new species and its
associated plants reveal that the plants grew in a warm and moderately
humid environment in the warm temperate zone. The presence of some
deciduous plants,such as ginkgoaleans, czekanowskialeans and conifers,
indicate the climate with seasonal fluctuations in temperature.