scholarly journals A specimen of Paralycoptera Chang & Chou 1977 (Teleostei: Osteoglossoidei) from Hong Kong (China) with a potential Late Jurassic age that extends the temporal and geographical range of the genus

2014 ◽  
Author(s):  
Tze-Kei Tse ◽  
Michael Pittman ◽  
Meemann Chang
Keyword(s):  
Hong Kong ◽  
Early Cretaceous ◽  
Range Expansion ◽  
Teleost Fish ◽  
Late Jurassic ◽  
Range Extension ◽  
Geographical Range ◽  
Postcranial Skeleton ◽  
Mainland Chinese ◽  
Radiometric Data

We identify an osteoglossoid teleost fish - Paralycoptera - from Late Jurassic volcaniclastic mudstones from the Lai Chi Chong Formation of Hong Kong, China. This partially preserved postcranial skeleton represents the first Mesozoic fish from Hong Kong and the most southerly Paralycoptera to date. A radiometric date for the Lai Chi Chong Formation of ~146 Ma implies a temporal range expansion for Paralycoptera of approximately 40 million years back from the Early Cretaceous (~110Ma). However, spores found in the Formation suggest an Early Cretaceous age that is consistent with the existing age assignment to Paralycoptera. We argue that the proposed temporal range extension is genuine because it is based on recent precise and accurate radiometric data, but given the discrepancies with the biostratigraphic ages further investigation is needed to confirm this. This study provides an important step towards revealing Hong Kong’s Mesozoic vertebrate fauna and understanding its relationship to well-studied mainland Chinese ones.

scholarly journals A specimen of Paralycoptera Chang & Chou 1977 (Teleostei: Osteoglossoidei) from Hong Kong (China) with a potential Late Jurassic age that extends the temporal and geographical range of the genus

2014 ◽  
Author(s):  
Tze-Kei Tse ◽  
Michael Pittman ◽  
Meemann Chang
Keyword(s):  
Hong Kong ◽  
Early Cretaceous ◽  
Range Expansion ◽  
Teleost Fish ◽  
Late Jurassic ◽  
Range Extension ◽  
Geographical Range ◽  
Postcranial Skeleton ◽  
Mainland Chinese ◽  
Radiometric Data

We identify an osteoglossoid teleost fish - Paralycoptera - from Late Jurassic volcaniclastic mudstones from the Lai Chi Chong Formation of Hong Kong, China. This partially preserved postcranial skeleton represents the first Mesozoic fish from Hong Kong and the most southerly Paralycoptera to date. A radiometric date for the Lai Chi Chong Formation of ~146 Ma implies a temporal range expansion for Paralycoptera of approximately 40 million years back from the Early Cretaceous (~110Ma). However, spores found in the Formation suggest an Early Cretaceous age that is consistent with the existing age assignment to Paralycoptera. We argue that the proposed temporal range extension is genuine because it is based on recent precise and accurate radiometric data, but given the discrepancies with the biostratigraphic ages further investigation is needed to confirm this. This study provides an important step towards revealing Hong Kong’s Mesozoic vertebrate fauna and understanding its relationship to well-studied mainland Chinese ones.

scholarly journals Late Jurassic to Early Cretaceous volcanism of Hong Kong: Insights from the Ping Chau Formation

2019 ◽  
Vol 10 (2) ◽  
pp. 553-568
Author(s):  
Lulin Wang ◽  
Longlong Zhao ◽  
Mingzhong Tian ◽  
Fadong Wu ◽  
Xujiao Zhang
Keyword(s):  
Hong Kong ◽  
Early Cretaceous ◽  
Late Jurassic ◽  
Cretaceous Volcanism

scholarly journals Origin and evolution of turiasaur dinosaurs set by means of a new ‘rosetta’ specimen from Spain

2020 ◽  
Vol 191 (1) ◽  
pp. 201-227
Author(s):  
Rafael Royo-Torres ◽  
Alberto Cobos ◽  
Pedro Mocho ◽  
Luis Alcalá
Keyword(s):  
North America ◽  
19Th Century ◽  
Early Cretaceous ◽  
Middle Jurassic ◽  
Late Jurassic ◽  
Postcranial Skeleton ◽  
Early 19Th Century ◽  
Origin And Evolution ◽  
Character Variation ◽  
The Usa

Abstract Turiasauria is a non-neosauropod eusauropod clade of dinosaurs known since 2006, when the description of Turiasaurus was published. This group, including Losillasaurus, was originally thought to have been restricted to the Late Jurassic of Spain. However, over the last decade, our knowledge of this group has improved with the discovery of new taxa such as Zby from the Portuguese Late Jurassic, Tendaguria from the Tanzanian Late Jurassic and Mierasaurus and Moabosaurus from the Early Cretaceous of the USA. Here, we describe a new specimen of Losillasaurus from Spain, which allows us to better understand the character variation in the cranial and postcranial skeleton. The review of some sauropod fauna of Madagascar, and inclusion of some specimens of Turiasauria, suggest that this clade might have arisen in the Middle Jurassic. According to our phylogenetic results, a specimen found in the early 19th century in Madagascar is shown to be the oldest and only member of Turiasauria represented in the Middle Jurassic thus far. This is named Narindasaurus thevenini gen. & sp. nov.. Turiasauria is thus known from the Middle Jurassic in Pangaea, diversified in the Late Jurassic in Gondwana and Laurasia, and dispersed during the Early Cretaceous to North America.

scholarly journals A new paravian dinosaur from the Late Jurassic of North America supports a late acquisition of avian flight

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7247 ◽  
Author(s):  
Scott Hartman ◽  
Mickey Mortimer ◽  
William R. Wahl ◽  
Dean R. Lomax ◽  
Jessica Lippincott ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
North America ◽  
Early Cretaceous ◽  
Late Jurassic ◽  
New Taxon ◽  
Morrison Formation ◽  
Postcranial Skeleton ◽  
Avian Flight ◽  
Multiple Alternative ◽  
Limb Proportions

The last two decades have seen a remarkable increase in the known diversity of basal avialans and their paravian relatives. The lack of resolution in the relationships of these groups combined with attributing the behavior of specialized taxa to the base of Paraves has clouded interpretations of the origin of avialan flight. Here, we describeHesperornithoides miesslerigen. et sp. nov., a new paravian theropod from the Morrison Formation (Late Jurassic) of Wyoming, USA, represented by a single adult or subadult specimen comprising a partial, well-preserved skull and postcranial skeleton. Limb proportions firmly establishHesperornithoidesas occupying a terrestrial, non-volant lifestyle. Our phylogenetic analysis emphasizes extensive taxonomic sampling and robust character construction, recovering the new taxon most parsimoniously as a troodontid close toDaliansaurus,Xixiasaurus, andSinusonasus. Multiple alternative paravian topologies have similar degrees of support, but proposals of basal paravian archaeopterygids, avialan microraptorians, andRahonavisbeing closer to Pygostylia than archaeopterygids or unenlagiines are strongly rejected. All parsimonious results support the hypothesis that each early paravian clade was plesiomorphically flightless, raising the possibility that avian flight originated as late as the Late Jurassic or Early Cretaceous.

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

scholarly journals Stigma, Discrimination, and Hate Crimes in Chinese-Speaking World amid Covid-19 Pandemic

2021 ◽  
Author(s):  
Jianhua Xu ◽  
Guyu Sun ◽  
Wei Cao ◽  
Wenyuan Fan ◽  
Zhihao Pan ◽  
...  
Keyword(s):  
Data Mining ◽  
Hong Kong ◽  
Political Ideology ◽  
Chinese Population ◽  
Early Stage ◽  
Chinese Language ◽  
Hate Crimes ◽  
Overseas Chinese ◽  
Mainland Chinese ◽  
Media Reports

AbstractThe Covid-19 pandemic has given rise to stigma, discrimination, and even hate crimes against various populations in the Chinese language–speaking world. Using interview data with victims, online observation, and the data mining of media reports, this paper investigated the changing targets of stigma from the outbreak of Covid-19 to early April 2020 when China had largely contained the first wave of Covid-19 within its border. We found that at the early stage of the pandemic, stigma was inflicted by some non-Hubei Chinese population onto Wuhan and Hubei residents, by some Hong Kong and Taiwan residents onto mainland Chinese, and by some Westerners towards overseas Chinese. With the number of cases outside China surpassing that in China, stigmatization was imposed by some Chinese onto Africans in China. We further explore how various factors, such as the fear of infection, food and mask culture, political ideology, and racism, affected the stigmatization of different victim groups. This study not only improved our understanding of how stigmatization happened in the Chinese-speaking world amid Covid-19 but also contributes to the literature of how sociopolitical factors may affect the production of hate crimes.

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