scholarly journals Microfossil Assemblages from the Late Jurassic to Early Cretaceous Nikoro Pelagic Sediments, Tokoro Belt, Hokkaido, Japan

1989 ◽  
Vol 26 (3) ◽  
pp. 193-214
Author(s):  
Hakuyu Okada ◽  
John A. Tarduno ◽  
Kojiro Nakaseko ◽  
Akiko Nishimura ◽  
William V. Sliter ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Late Jurassic

AGE MODEL FOR LATE JURASSIC THROUGH EARLY CRETACEOUS USED IN THE GEOLOGIC TIMESCALE 2012/2016 REFERENCE SCALES

2018 ◽  
Author(s):  
James G. Ogg ◽  
◽  
Chunju Huang ◽  
Chunju Huang ◽  
Linda A. Hinnov ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Late Jurassic ◽  
Age Model

Theropod teeth from the basalmost Cretaceous of Anoual (Morocco) and their palaeobiogeographical significance

2009 ◽  
Vol 146 (4) ◽  
pp. 602-616 ◽  
Author(s):  
F. KNOLL ◽  
J. I. RUIZ-OMEÑACA
Keyword(s):  
Early Cretaceous ◽  
Late Jurassic ◽  
Dispersal Events ◽  
Early Occurrence

AbstractThe theropod teeth from the Berriasian (Early Cretaceous) site of Anoual (N Morocco) are described. The assemblage is important in that it comes from one of the very few dinosaur sites of this age globally and the only one for the whole of Gondwana. The theropod teeth from Anoual are morphologically diverse. Most of the material possibly belongs to the clade Dromaeosauridae, which would be an early occurrence for this taxon. The palaeogeographic position of Anoual enables it to provide data on the dispersal events that affected terrestrial faunas during Mesozoic times. A Laurasian influence is evidenced by the presence of Velociraptorinae and, on the whole, the theropod fauna from Anoual provides support for the existence of a trans-Tethyan passage allowing terrestrial faunal interchanges during Late Jurassic and/or earliest Cretaceous times. Additionally, Anoual records the existence of diminutive theropods. However, it cannot yet be determined whether the small size of the specimens is genetic or ontogenetic.

scholarly journals Late Jurassic-Early Cretaceous palynostratigraphy and palaeoclimate in the Andigama Basin, Sri Lanka

2021 ◽  
pp. 100067
Author(s):  
Panchala Weerakoon ◽  
Harinam Joshi ◽  
Neha Aggarwal ◽  
Neerja Jha ◽  
Hetti Arachchige Hemachandra Jayasena ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Early Cretaceous ◽  
Late Jurassic

New multituberculate mammal from the Early Cretaceous of eastern North America

2013 ◽  
Vol 50 (3) ◽  
pp. 315-323 ◽  
Author(s):  
Richard L. Cifelli ◽  
Cynthia L. Gordon ◽  
Thomas R. Lipka
Keyword(s):  
North America ◽  
Iberian Peninsula ◽  
Early Cretaceous ◽  
North American ◽  
Lower Cretaceous ◽  
Late Jurassic ◽  
Relative Length ◽  
Central Position ◽  
Eastern North America ◽  
The North

Multituberculates, though among the most commonly encountered mammalian fossils of the Mesozoic, are poorly known from the North American Early Cretaceous, with only one taxon named to date. Herein we describe Argillomys marylandensis, gen. et sp. nov., from the Early Cretaceous of Maryland, based on an isolated M2. Argillomys represents the second mammal known from the Arundel Clay facies of the Patuxent Formation (Lower Cretaceous: Aptian). Though distinctive in its combination of characters (e.g., enamel ornamentation consisting of ribs and grooves only, cusp formula 2:4, presence of distinct cusp on anterobuccal ridge, enlargement of second cusp on buccal row, central position of ultimate cusp in lingual row, great relative length), the broader affinities of Argillomys cannot be established because of non-representation of the antemolar dentition. Based on lack of apomorphies commonly seen among Cimolodonta (e.g., three or more cusps present in buccal row, fusion of cusps in lingual row, cusps strongly pyramidal and separated by narrow grooves), we provisionally regard Argillomys as a multituberculate of “plagiaulacidan” grade. Intriguingly, it is comparable in certain respects to some unnamed Paulchoffatiidae, a family otherwise known from the Late Jurassic – Early Cretaceous of the Iberian Peninsula.

Bivalves and oncoids as palaeoenvironmental indicators at Late Jurassic and Early Cretaceous dinosaur sites from Spain

2019 ◽  
Vol 130 (1) ◽  
pp. 87-102 ◽  
Author(s):  
Graciela Delvene ◽  
Rafael P. Lozano ◽  
Martin Munt ◽  
Rafael Royo-Torres ◽  
Alberto Cobos ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Late Jurassic

scholarly journals Biotic and environmental dynamics through the Late Jurassic-Early Cretaceous transition: evidence for protracted faunal and ecological turnover

2016 ◽  
Vol 92 (2) ◽  
pp. 776-814 ◽  
Author(s):  
Jonathan P. Tennant ◽  
Philip D. Mannion ◽  
Paul Upchurch ◽  
Mark D. Sutton ◽  
Gregory D. Price
Keyword(s):  
Early Cretaceous ◽  
Late Jurassic

scholarly journals Late Jurassic to Early Cretaceous age of the Daqiao gold deposit, West Qinling Orogen, China: implications for regional metallogeny

2018 ◽  
Vol 54 (4) ◽  
pp. 631-644 ◽  
Author(s):  
Ya-Fei Wu ◽  
Jian-Wei Li ◽  
Katy Evans ◽  
Paulo M. Vasconcelos ◽  
David S. Thiede ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Early Cretaceous ◽  
Late Jurassic ◽  
Qinling Orogen ◽  
West Qinling ◽  
West Qinling Orogen
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