The production of a single-cell atlas for developing syngnathid fish permits study of their unique traits.

It is shown that the absence of the centrosome protein ninein provokes premature ossification during mouse development, due to a defect in the fusion of precursor cells into syncytial osteoclasts.

An extracellular proteolytic pathway involving the serine protease HtrA1, its inhibitor SerpinE2, and the transmembrane proteoglycan Syndecan-4 control collective migration of neural crest cells in the developing embryo.

Observational field analyses demonstrate that within a species, variation in animal weapon size corresponds to individual differences in the costs and benefits of weaponry.

Spatially distinct ectodermal Wnt and endodermal Shh signals serve to polarize the skate gill skeleton.

Three-dimensional digital reconstruction shows the temporal and palatal regions of stemward avialans are evolutionarily and functionally conservative, and the mixture of plesiomorphic cranial morphologies together with derived postcranial skeleton manifests the key role of mosaicism in early bird diversification.

Jaw joint regulatory sequence 1 (JRS1) is deeply conserved in most jawed vertebrates and displays a specific enhancer activity in the developing primary jaw joint that contributes to early nkx3.2 gene expression and jaw joint morphology.

μCT-aided study illuminates the cranial endoskeleton and interrelationships of the Permian actinopterygian †Brachydegma, which is now excluded from crown neopterygians despite exhibiting a double jaw joint.

Lineage tracing and genetic analysis in zebrafish show that the pseudobranch is a serial homolog of the gills arising from the jaw-forming mandibular arch, thus supporting the model that vertebrate jaws derived from an ancestral mandibular gill.

The integration of biplanar X-ray videos with 3D X-ray particle tracking revealed that fish use a combination of intraoral 'central jet' waterflow pattern and inertia to guide food toward the digestive tract during suction feeding.