Results 11 to 20 of about 83,522 (250)

Synovial joints were present in the common ancestor of jawed fish but lacking in jawless fish

open access: goldPLOS Biology
Synovial joints, characterized by reciprocally congruent and lubricated articular surfaces separated by a cavity, can simultaneously provide mobility and load bearing. Here, we study the early evolution of synovial joints by examining the morphological, genetic, and molecular features required for the development and function of the joints in ...
Neelima Sharma   +2 more
openalex   +6 more sources

On a New Fish-Jaw from the Gault Near Folkestone [PDF]

open access: greenThe Geologist
My friend Mr. Mackie has handed me an interesting little fragment of jaw, derived from the Gault at Folkestone. The length of the broken fragment of jaw measures 1⅛ inch; its absolute breadth of an inch. It contains three teeth, of which the largest is conical, incurved, exhibiting around its thickened base a series of sculptured linear depressions ...
C. C. F. Blake
openalex   +3 more sources

Gastrointestinal morphology and feeding intensity of Periophthalmus gracilis caught from some coastal provinces in the Mekong Delta, Vietnam

open access: yesVeterinary Integrative Sciences, 2023
This study provided data on gastrointestinal morphology and feeding intensity of slender mudskipper Periophthalmus gracilis distributed in some coastal provinces in the Mekong Delta, Vietnam (VMD).
U Van Hua   +2 more
doaj   +1 more source

Lateral jaw motion in fish expands the functional repertoire of vertebrates and underpins the success of a dominant herbivore lineage. [PDF]

open access: hybridProc Natl Acad Sci U S A
Mihalitsis M   +11 more
europepmc   +2 more sources

SATB2 and MDM2 Immunoexpression and Diagnostic Role in Primary Osteosarcomas of the Jaw

open access: yesDentistry Journal, 2021
Primary osteosarcomas of the jaw (OSJ) are rare, accounting for 6% of all osteosarcomas. This study aims to determine the value of SATB2 and MDM2 immunohistochemistry (IHC) in differentiating OSJ from other jawbone mimickers, such as benign fibro-osseous
Adepitan A. Owosho   +10 more
doaj   +1 more source

A novel cis-regulatory element drives early expression of Nkx3.2 in the gnathostome primary jaw joint

open access: yeseLife, 2022
The acquisition of movable jaws was a major event during vertebrate evolution. The role of NK3 homeobox 2 (Nkx3.2) transcription factor in patterning the primary jaw joint of gnathostomes (jawed vertebrates) is well known, however knowledge about its ...
Jake Leyhr   +5 more
doaj   +1 more source

Trophic divergence of Lake Kivu cichlid fishes along a pelagic versus littoral habitat axis

open access: yesEcology and Evolution, 2021
Local adaptation to the littoral and pelagic zones in two cichlid haplochromine fish species from Lake Kivu was investigated using morphometrics. Cranial variation and inferred jaw mechanics in both sexes of the two species across the two habitat types ...
Philippe S. Munyandamutsa   +3 more
doaj   +1 more source

Gill developmental program in the teleost mandibular arch

open access: yeseLife, 2022
Whereas no known living vertebrate possesses gills derived from the jaw-forming mandibular arch, it has been proposed that the jaw arose through modifications of an ancestral mandibular gill. Here, we show that the zebrafish pseudobranch, which regulates
Mathi Thiruppathy   +3 more
doaj   +1 more source

FEEDING HABITS OF SOLDIER CROAKER Dendrophysa russelii (Cuvier, 1829) DISTRIBUTED IN COASTAL AREAS OF THE MEKONG DELTA, VIETNAM

open access: yesTra Vinh University Journal of Science, 2022
This study researched the feeding habits of soldier croaker Dendrophysa russelii (Cuvier,1829) distributed in coastal areas of the Mekong Delta from May to December, 2021. Fish samples were randomly collected in different sizes by trawl-net.
Viet Van Mai
doaj   +1 more source

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