Results 71 to 80 of about 643 (178)

Vampyrella crystallifera sp. nov., an Amoeba That Dissolves Entire Algal Cells at a Remarkable Speed

Ecology and Evolution, Volume 15, Issue 3, March 2025.
The new vampyrellid amoeba Vampyrella crystallifera inhabits wet Sphagnum plants in temperate moorlands. Unlike its congeners, it engulfs entire algal cells and breaks them down at a fascinating speed. This represents a feeding habit that was unexpected for the genus Vampyrella and showcases the exceptional diversity of predator–prey interactions found
Andreas Suthaus, Sebastian Hess
wiley   +1 more source

Separate evolutionary origins of teeth from evidence in fossil jawed vertebrates.

, 2003
Placoderms are extinct jawed fishes of the class Placodermi and are basal among jawed vertebrates. It is generally thought that teeth are absent in placoderms and that the phylogenetic origin of teeth occurred after the evolution of jaws. However, we now
Smith, M M, Johanson, Z
core   +1 more source

A Silurian placoderm with osteichthyan-like marginal jaw bones

Nature, 2013
The gnathostome (jawed vertebrate) crown group comprises two extant clades with contrasting character complements. Notably, Chondrichthyes (cartilaginous fish) lack the large dermal bones that characterize Osteichthyes (bony fish and tetrapods). The polarities of these differences, and the morphology of the last common ancestor of crown gnathostomes ...
Zhu, Min, Yu, Xiaobo, Ahlberg, Per Erik, Choo, Brian, Lu, Jing, Qiao, Tuo, Qu, Qingming, Zhao, Wenjin, Jia, Liantao, Blom, Henning, Zhu, You’an   +10 more
openaire   +2 more sources

On the Maxillofacial Development of Mice, Mus musculus

Journal 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, Shunya Kuroda, Akiyasu Iwase, Naoki Irie, Hiroki Kurihara   +4 more
wiley   +1 more source

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

Journal 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, Naoki Yamane, Akira Hanashima, Ken Hashimoto, Yuji Kanaoka, Satoshi Mohri   +5 more
wiley   +1 more source

Palaeogeographical and palaeoecological constraints on palaeozoic vertebrates (chondrichthyans and placoderms) in the Ardenne Massif - Shark radiations in the Famennian on both sides of the Paleotethys

, 2014
peer reviewedThree chondrichthyan radiations are registered in the Famennian of the ArdenneMassif (Belgium). These radiations are already observed in Morocco and in the Carnic Alps, their acme being related with the early expansa transgression ...
Groessens, Eric, Olive, Sébastien, Derycke, Claire, Goujet, Daniel   +3 more
core   +1 more source

Fish Assemblage from the Givetian (Middle Devonian) of the Kuznetsk Basin, Russia

Учёные записки Казанского университета: Серия Естественные науки
A diverse fish assemblage was reported from the Mazalovskiy Kitat and Alchedat beds (Givetian, Middle Devonian) of the Kuznetsk Basin (Siberia, Russia).
A. O. Ivanov, N. G. Izokh
doaj   +1 more source

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

Developmental 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, Uwe Hoßfeld, Georgy S. Levit   +2 more
wiley   +1 more source

Bone vascularization and growth in placoderms (Vertebrata): The example of the premedian plate of Romundina stellina Ørvig, 1975

, 2010
International audienceThe Placodermi (armored jawed fishes), which appeared during the Lower Silurian and disappeared without leading any descendants at the end of the Famennian (Latest Devonian), have the highest diversity of known Devonian vertebrate ...
Paul Tafforeau, Goujet, Daniel,, Tafforeau, Paul,, Dupret, Vincent,, Ahlberg, Per Erik,, Dupret, V., Sophie Sanchez, Daniel Goujet, Sanchez, Sophie,, Goujet, D., Per E. Ahlberg, Ahlberg, P.E., Sanchez, Sébastien, Tafforeau, P., Vincent Dupret   +14 more
core   +1 more source

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

Applied 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, Dillon H. Murphy, Jordan A. Brabec, Robert A. Bjork, Elizabeth L. Bjork   +4 more
wiley   +1 more source