Results 31 to 40 of about 9,376 (253)

Extensive vertebrate tracksite from the Upper Red Formation (middle–late Miocene), west Zanjan, northwestern Iran [PDF]

Fossil Record, 2021
An extensive vertebrate tracksite from the middle–late Miocene Upper Red Formation in western Zanjan Province, northwestern Iran, provides new records of paleobiogeographical significance.
N. Abbassi, M. Khoshyar, S. G. Lucas, F. Esmaeili   +3 more
doaj   +1 more source

A dwarf walrus from the Miocene of Baja California Sur, Mexico [PDF]

Royal Society Open Science, 2018
Here, we describe the odobenid Nanodobenus arandai gen. et sp. nov., based on a nearly complete left mandible from the mid to late Miocene Tortugas Formation in Baja California Sur.
Jorge Velez-Juarbe, Fernando M. Salinas-Márquez   +1 more
doaj   +1 more source

A New Late Miocene Odobenid (Mammalia: Carnivora) from Hokkaido, Japan Suggests Rapid Diversification of Basal Miocene Odobenids. [PDF]

PLoS ONE, 2015
The modern walrus, Odobenus rosmarus, is specialized and only extant member of the family Odobenidae. They were much more diversified in the past, and at least 16 genera and 20 species of fossil walruses have been known.
Yoshihiro Tanaka, Naoki Kohno
doaj   +1 more source

Monsoon intensification in East Asia triggered the evolution of its flora

Frontiers in Plant Science, 2022
IntroductionEast Asia (EA), which falls within the region of the Asian monsoon that is composed of the East Asia monsoon (EAM) and the Indian monsoon (IM), is known for its high species diversity and endemism.
Jun-Wei Ye, Jun-Wei Ye, Bin Tian, De-Zhu Li   +3 more
doaj   +1 more source

Seismic stratigraphy and development of a modern isolated carbonate platform (Xuande Atoll) in the South China Sea

Frontiers in Earth Science, 2023
Xuande Atoll is an isolated carbonate platform that has developed since the early Miocene. This study conducted high-resolution seismic surveys and shallow drilling to understand its internal structure and development.
Y. Liu, Y. Liu, S. Wu, S. Wu, S. Wu, X. Li, X. Li, W. Chen, W. Chen, X. Han, C. Yang, Y. Qin, X. Huang, X. Huang, Z. Yang, J. Sun, L. Zhu   +16 more
doaj   +1 more source

Tandem Duplication‐Driven Neofunctionalization of UDP‐Glycosyltransferases Shapes the Diversification of Triterpenoid Saponins in the Cucurbitaceae

Advanced Science, EarlyView.
We present a chromosome‐level genome assembly of Siraitia grosvenorii and, through comparative genomics, uncover a conserved UGT73 tandem array driving triterpenoid saponin diversification in Cucurbitaceae. Crystalized SgUGT73AM30 further reveals the regioselectivity mechanism underlying its catalytic activity.
Guangyi Wang, Mengmeng Li, Xuehui Dai, Yanchen Zhang, Yuhan Wu, Zhaotao Yan, Chenfei Tian, Hongkai Fan, Haili Liu, Xiaowei Zhang, Yiming Yang, Jiayu Lu, Yuwei Sun, Yong Wang   +13 more
wiley   +1 more source

Phylogenomic insights into the genus Tulipa (Liliaceae): Taxonomy, evolution, and biogeography

American Journal of Botany, EarlyView.
Abstract Premise Tulips are one of the best‐known geophytes, but their taxonomy remains convoluted and their evolutionary history poorly understood. Here, we used plastid genomes to identify some issues with current classification, understand the diversification history of the genus, and identify potential species linked to historical cultivation ...
Brett Wilson, Maarten J. M. Christenhusz, Nathanael Walker‐Hale, Natalya Beshko, Mariyo Boboev, Colin Clubbe, Davron Dekhkonov, Aibek Dolotbakov, Mehmet Firat, Thomas Freeth, Sjaak de Groot, Avni Hajdari, Georgy A. Lazkov, Ormon Sultangaziev, Komiljon S. Tojibaev, Ben J. M. Zonneveld, Kaiyrkul T. Shalpykov, Samuel F. Brockington   +17 more
wiley   +1 more source

Revision of Varanus marathonensis (Squamata, Varanidae) based on historical and new material: morphology, systematics, and paleobiogeography of the European monitor lizards.

PLoS ONE, 2018
Monitor lizards (genus Varanus) inhabited Europe at least from the early Miocene to the Pleistocene. Their fossil record is limited to about 40 localities that have provided mostly isolated vertebrae. Due to the poor diagnostic value of these fossils, it
Andrea Villa, Juan Abella, David M Alba, Sergio Almécija, Arnau Bolet, George D Koufos, Fabien Knoll, Àngel H Luján, Jorge Morales, Josep M Robles, Israel M Sánchez, Massimo Delfino   +11 more
doaj   +1 more source

Integrating developmental and macroevolutionary approaches reveals a staminodial origin of all alternisepalous organs in Caryophyllaceae

American Journal of Botany, EarlyView.
Abstract Premise The identity of sterile floral organs in second‐whorl, alternisepalous positions within Caryophyllaceae remains contentious, having been described as staminodes, “petaloids,” or petals homologous with those of other Pentapetalae. Limited ingroup and outgroup sampling and floral developmental data and inadequate phylogenetic comparative
Riley J. Rees, Andrea D. Appleton, John J. Schenk   +2 more
wiley   +1 more source

Contribution of the late Miocene mammals from Calabria and Sicily to the palaeogeography of the central Mediterranean

Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2019
During Miocene, the paleogeography of the central Mediterranean area underwent significant modifications under control of Plate Tectonics. The area here considered occupies a southern position, rougly coincident with the Calabria-Peloritan Arc (CPA ...
Antonella Cinzia Marra
doaj   +1 more source