Results 71 to 80 of about 58,521 (270)

Allopatric molting of Devonian trilobites

open access: yesScientific Reports, 2022
AbstractTrilobite exuviae record the development of individual trilobites and their molting process and can also contain information on their behavior. The silt- to fine-grained tuffites of the middle part of the Middle Member of the Upper Devonian Hongguleleng Formation in western Junggar contains abundant phacopidae trilobite, specificallyOmegopssp ...
Ruiwen Zong, Yiming Gong
openaire   +3 more sources

Evolutionary implications of a deep‐time perspective on insect pollination

open access: yesBiological Reviews, EarlyView.
ABSTRACT Plant pollination by insects represents one of the most transformative and iconic ecological relationships in the natural world. Despite tens of thousands of papers, as well as numerous books, on pollination biology published over the past 200 years, most studies focused on the fossil record of pollinating insects have only been published in ...
David Peris   +10 more
wiley   +1 more source

An exceptionally preserved Late Devonian actinopterygian provides a new model for primitive cranial anatomy in ray-finned fishes

open access: yesProceedings of the Royal Society B: Biological Sciences, 2015
Actinopterygians (ray-finned fishes) are the most diverse living osteichthyan (bony vertebrate) group, with a rich fossil record. However, details of their earliest history during the middle Palaeozoic (Devonian) ‘Age of Fishes' remains sketchy.
Sam Giles   +4 more
semanticscholar   +1 more source

Re‐make, re‐model: evolution and development of vertebrate cranial lateral lines

open access: yesBiological Reviews, EarlyView.
ABSTRACT Lateral lines are placodally derived mechanosensory systems on the heads and trunks of many aquatic vertebrates. There is evidence of lateral lines in the earliest known vertebrate fossils, and they exist in organisms with widely different craniofacial morphologies – including the presence or absence of jaws, external or internal nostrils, and
Vishruth Venkataraman   +3 more
wiley   +1 more source

Formation Conditions and Hydrocarbons Generation Potential of Oil Source Rocks of South Tatar Arch and Surrounding Areas

open access: yesGeoresursy
The work studied the lithological and geochemical characteristics of oil and gas source rocks of the central part of the Volga-Ural oil and gas bearing province.
A. S. Khayuzkin   +6 more
doaj   +1 more source

Lycopsid forests in the early Late Devonian paleoequatorial zone of Svalbard

open access: yes, 2015
The Middle to early Late Devonian transition from diminutive plants to the first forests is a key episode in terrestrialization. The two major plant groups currently recognized in such “transitional forests” are pseudosporochnaleans (small to medium ...
C. M. Berry, J. Marshall
semanticscholar   +1 more source

Coupling Phase Equilibrium Modelling and Apatite‐in‐Garnet Elastic Barometry to Unravel the P–T Path of the Micaschist Unit From the Zicavo Metamorphic Complex (Corsica, France)

open access: yesJournal of Metamorphic Geology, EarlyView.
ABSTRACT To gain insights into the pressure–temperature evolution of a scarcely studied portion of the Variscan basement of Corsica in southern Europe, we combined phase equilibrium modelling, Zr‐in‐rutile thermometry and apatite‐in‐garnet elastic barometry. We investigated Grt‐St micaschist rocks containing garnet grains of several millimetres in size
Lorenzo Dulcetta   +6 more
wiley   +1 more source

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