Results 111 to 120 of about 77,436 (299)

Postcranial anatomy of the Miocene hippopotamoids of Toros‐Menalla, Chad

open access: yesJournal of Anatomy, EarlyView.
We establish a framework for the identification of postcranial remains in hippopotamoids by describing and comparing for the first time two late Miocene hippopotamoids from Toros‐Menalla, Chad (Hexaprotodon garyam, an early hippopotamid, and Libycosaurus bahri, the last African anthracothere) with the common hippopotamus.
Lorenzo Scribano   +4 more
wiley   +1 more source

A geophysical investigation of the Roter Kamm impact crater, Namibia

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract The Roter Kamm impact crater is located in the southern Namib Desert. The crater has a diameter of 2.5 km and belongs to the category of simple, bowl‐shaped impact craters, with an elevated rim of fractured target rock. The crater's interior is completely buried beneath sediments, preventing extensive surface investigations of the bedrock ...
Hannah Nienhaus   +6 more
wiley   +1 more source

BIOSTRATIGRAPHY OF THE ASMARI FORMATION, BURUJEN AREA, IRAN [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1996
Lithological characteristics of the Asmari Formation in the Burujen area are: pelagic foraminifera wackestone-packstone; bentic foraminifera echinid packstone; bentic foraminifera corallinaceapackstone; coral boundstone and echinid corallinacea packstone
doaj  

Static recrystallization of shocked calcite in Ries impact breccias

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Calcite is prone to chemical and microstructural modifications, especially after having been strained at high stresses and strain rates, as during hypervelocity impact events. These modifications include precipitation from pore fluid as well as replacement of strained volumes by recrystallization. In calcite aggregates of a metagranite breccia
Claudia A. Trepmann   +8 more
wiley   +1 more source

Two new Miocene limpets (Fissurellidae) from southern California, with notes on other fossil occurrences of the family in northwestern North America [PDF]

open access: yes, 2019
Two new fissurellid limpets (Mollusca: Gastropoda: Fissurellidae), Fissurella? stantoni n. sp. and Scelidotoma aldersoni n. sp., are described from Miocene deposits in southern California. Fissurella? stantoni is described from a single specimen from the
Geiger, Daniel L.   +1 more
core  

Ecological change may be a common initiator of evolutionary pollinator shifts

open access: yesNew Phytologist, EarlyView.
Summary Although evolutionary pollinator shifts are accepted as major sources of floral and species diversity in angiosperms, the mechanisms triggering pollinator shifts remain largely unexplored. In 1970, Stebbins proposed that ecological change may be a common initiator of evolutionary pollinator shifts, but empirical tests of Stebbins' hypothesis ...
Agnes S. Dellinger
wiley   +1 more source

The Dynamic Cause of Volcanic Age Disparity in the Halmahera Arc, Eastern Indonesia, Based on Thermal Simulation

open access: yesApplied Sciences
A notable feature of volcanic activity in the Halmahera arc since the Middle Miocene is that eruptions have occurred episodically from south to north, rather than simultaneously.
Gui Fang   +6 more
doaj   +1 more source

Soricidae (Mammalia, Insectivora) remains from three Late Miocene localities in western Hungary [PDF]

open access: yes, 1996
The Soricidae fauna of Sümeg, Csákvár and Széchenyi Hill (Hungary) is presented. The following taxa were identified in the fauna: Dinosorex sp., Amblycoptus oligodon KORMOS1926, Crusafontina endernica GIBERT1974, Crusafontina vicina (KRETZOJ,1954 ...
Mészáros, L. Gy.
core  

A Near Telomere‐to‐Telomere Genome of Belamcanda chinensis Provides Insights Into Genome Evolution and the Biosynthesis of Characteristic Isoflavones

open access: yesPlant Biotechnology Journal, EarlyView.
ABSTRACT Belamcanda chinensis is a non‐leguminous medicinal plant rich in bioactive isoflavones; however, the lack of a high‐quality reference genome has limited elucidation of its isoflavone biosynthetic and modification network. Here, we present the first near telomere‐to‐telomere genome assembly of B.
Yuan‐Yuan Wang   +10 more
wiley   +1 more source

Redefining ecosystem integrity for an Anthropocene biosphere: a process‐ and lineage‐based framework for restoration

open access: yesRestoration Ecology, EarlyView.
Restoration increasingly operates in rapidly transforming landscapes shaped by human‐driven global change, where historical reference states no longer represent achievable or even desirable targets. Yet, ecological restoration and conservation management still rely on composition‐based definitions of ecosystem integrity that assume stable reference ...
Jens‐Christian Svenning
wiley   +1 more source

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