Results 81 to 90 of about 696 (179)

3D and Mimics files of Silurian placoderm Bianchengichthys

open access: yes
3D and Mimics files of Silurian placoderm ...
Jing Lu (4480942)   +2 more
core   +1 more source

Data from: Bayesian morphological clock methods resurrect placoderm monophyly and reveal rapid early evolution in jawed vertebrates

open access: yes, 2016
The phylogeny of early gnathostomes provides an important framework for understanding one of the most significant evolutionary events, the origin and diversification of jawed vertebrates.
Qiao, Tuo   +4 more
core   +1 more source

On the Maxillofacial Development of Mice, Mus musculus

open access: yesJournal of Morphology, Volume 286, Issue 3, March 2025.
This study focused on the craniofacial development of the mouse (Mus musculus), particularly the maxillofacial region. Using three‐dimensional reconstructions of histological sections combined with whole‐mount staining, we provided a detailed description of skeletal, neural, and vascular formation from the pharyngula (9.0 dpc) to late fetal stages (18 ...
Hiroki Higashiyama   +4 more
wiley   +1 more source

A Middle-Late Devonian fish fauna from the Sierra de Perijá, western Venezuela, South America [PDF]

open access: yesFossil Record, 2002
A new Devonian fossil fish fauna from the region of Caño Colorado between the Rio Palmar and Rio Socuy, Sierra de Perijá, Venezuela, comes from two localities and several horizons within the Campo Chico Formation, dated on plants and spores as Givetian ...
G. C. Young, J. M. Moody
doaj   +3 more sources

Precaudal Vertebrae in the Postcranial Region of Moray Eels Form Ventral Processes

open access: yesJournal of Morphology, Volume 285, Issue 10, October 2024.
The precaudal vertebrae in the postcranial region of moray eels form ventral processes with blood vessels. ABSTRACT Fish vertebrae are primarily morphologically classified into precaudal vertebrae jointed to the ribs and caudal vertebrae with hemal spines, through which the caudal artery and veins pass.
Yuu Usui   +5 more
wiley   +1 more source

The internal cranial anatomy of Romundina stellina Ørvig, 1975 (Vertebrata, Placodermi, Acanthothoraci) and the origin of jawed vertebrates-Anatomical atlas of a primitive gnathostome.

open access: yesPLoS ONE, 2017
Placoderms are considered as the first jawed vertebrates and constitute a paraphyletic group in the stem-gnathostome grade. The acanthothoracid placoderms are among the phylogenetically most basal and morphologically primitive gnathostomes, but their ...
Vincent Dupret   +3 more
doaj   +1 more source

Darwin, Haeckel, and the “Mikluskan gas organ theory”

open access: yesDevelopmental Dynamics, Volume 253, Issue 4, Page 370-389, April 2024.
Abstract A previously unknown reference to the Russian ethnologist, biologist, and traveler Nikolai N. Miklucho‐Maclay (1846–1888) was discovered in correspondence between Charles Darwin (1809–1882) and Ernst Haeckel (1834–1919). This reference has remained unknown to science, even to Miklucho‐Maclay's biographers, probably because Darwin used the ...
Ingmar Werneburg   +2 more
wiley   +1 more source

New morphological information on, and species of placoderm fish Africanaspis (Arthrodira, Placodermi) from the Late Devonian of South Africa.

open access: yesPLoS ONE, 2017
Here we present a new species of placoderm fish, Africanaspis edmountaini sp. nov., and redescribe Africanaspis doryssa on the basis of new material collected from the type locality of Africanaspis.
Robert W Gess, Kate M Trinajstic
doaj   +1 more source

Fossil constraints on the origin and evolution of Platyhelminthes are surprisingly concordant with modern molecular phylogenies [PDF]

open access: yesZoologia (Curitiba)
Trace fossils preserved with fossil worm-shaped remains suggest the presence of free-living flatworms during the Ordovician at the latest and their occurrence in terrestrial environments during the Permian.
Kenneth De Baets   +7 more
doaj   +1 more source

The effects of lecture speed and note‐taking on memory for educational material

open access: yesApplied Cognitive Psychology, Volume 38, Issue 1, January/February 2024.
Abstract The use of pre‐recorded lecture videos as a primary mode of instruction during online learning has allowed students flexibility in how they self‐regulate their learning. Although increasing lectures up to 2x speed has little cost on memory, it is unknown whether note‐taking at increased speeds interacts with memory.
Ashley Chen   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy