Results 121 to 130 of about 115,566 (343)
Graptolites from Silurian (Llandovery Series) sedimentary deposits attributed to a forearc setting, Co To Formation, Co To archipelago, northeast Vietnam [PDF]
, 2020 Newly collected graptolites from the Co To Formation, Co To archipelago, NE Vietnam, comprise assemblages indicative of two biostratigraphical levels within the lower Silurian, Llandovery Series, Telychian Stage: the co-occurrence of Spirograptus ...
Doan, Hung Dinh +9 more
core +1 more source
Re‐make, re‐model: evolution and development of vertebrate cranial lateral lines
Biological 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
Crustal structure beneath the Trondelag Platform and adjacent areas of the Mid-Norwegian margin, as derived from wide-angle seismic and potential field data [PDF]
, 2010 The outer mid-Norwegian margin is characterized by strong breakup magmatism and has been extensively surveyed. The crustal structure of the inner continental shelf, however, is less studied, and its relation to the onshore geology, Caledonian structuring,
Breivik, A. J. +5 more
core
Descriptive Anatomy and Three-Dimensional Reconstruction of the Skull of the Early Tetrapod Acanthostega gunnari Jarvik, 1952 [PDF]
, 2003 The early tetrapod Acanthostega gunnari is an iconic fossil taxon exhibiting skeletal morphology reflecting the transition of vertebrates from water onto land. Computed tomography data of two Acanthostega skulls was segmented using visualization software
Chan, HL +5 more
core +3 more sources
The FEBS Journal, EarlyView.Phylogenetic analyses of glutamine synthetase (GS) in seed plants revealed that all three major evolutionary lineages (GS2, GS1a, and GS1b) must have been present in the common ancestor, with GS2 being the first lineage to diverge. Unlike GS1b, GS1a and GS2 are usually single‐copy genes, even though they underwent duplications that resulted in ...
Elena Aledo +3 more
wiley +1 more source
Devonian interval in Missouri [PDF]
Geological Society of America Bulletin, 1902 Introductory In central Missouri Carboniferous stratigraphy presents unusual relationships. Nowhere else in the whole region does the same succession of Paleozoic terranes prevail. Beginning with the typical Chouteau limestone as the basal member, the Carboniferous sequence rests directly on Ordovician dolomites. In other parts of the state the hiatus
openaire +2 more sources
Journal of Anatomy, EarlyView.Pectoral fins of bichirs encompass the so‐called dental plates – unique dermal skeletal elements with individual odontodes identical to the oral teeth. Abstract The dermal skeleton appeared early in vertebrate evolution in the form of mineralized skin denticles composed of tooth‐like units—odontodes.
Tomáš Suchánek +2 more
wiley +1 more source
An examination of the Devonian fishes of Michigan
PeerJ, 2018 We surveyed the taxa, ecosystems, and localities of the Devonian fishes of Michigan to provide a framework for renewed study, to learn about the diversity and number of these fishes, and to investigate their connection to other North American faunas.
Lauren Sallan, Jack Reza Stack
openaire +4 more sources
New Phytologist, EarlyView.Summary Dual mycorrhizal plants are associated with both arbuscular mycorrhizal (AM) and ectomycorrhizal (EcM) fungi that differ in cost and effectiveness for nutrient acquisition. Little is known about environmental drivers for the shifts between these associations in dual mycorrhizal plants.
Tatsuhiro Ezawa +4 more
wiley +1 more source