Members of Metacaligus have been associated with actinopterygian
fishes or obtained from plankton, particularly from American and Asian waters (Ho and Bashirullah, 1977; Suarez-Morales et al., 2012).
The Swordfish (Xiphias gladius) is a large and distinctive actinopterygian
fish with a long and flattened sword-like bill.
Recent studies of 29 actinopterygian
and 90 sarcopterygian genomes revealed that the AQP2, -5, or -6 gene clusters represent a genomic apomorphy since they are only found in the lobe-finned fish lineage (Sarcopterygii), including tetrapods that secondarily adapted to the aquatic environment (Cerda and Finn, 2010; Tingaud-Sequeira et al., 2010; Finn and Cerda, 2011; Xu et al., 2013; Finn et al., 2014).
Among the topics are from Tyrannosaurus rex to asteroid impact: early studies (1901-80) of the Hell Creek Formation in its type area, carbon isotope stratigraphy and correlation of plant megafossil localities, a preliminary test of the press-pulse extinction hypothesis: palynological indicators of vegetation change preceding the Cretaceous-Paleogene boundary in McCone County, the diversity and paleoecology of actinopterygian
fish from vertebrate microfossil localities of the Maastrichtian Hell Creek Formation, and the cranial morphology of a juvenile Triceratops skull and comments on the fossil record of ontogenetically younger skulls.
General data of LWR of 73 actinopterygian
species were estimated for a tropical region of southwestern Atlantic according to recommendations of Froese (2006).
Quattro, "Evolution of the vertebrate cytosolic malate dehydrogenase gene family: duplication and divergence in actinopterygian
fish," Journal of Molecular Evolution, vol.
In addition, acanthodian fish scales and a portion of a fin spine, and numerous actinopterygian
and sarcopterygian fish scales and tips of actinopterygian
teeth from the MNSC were identified by Kenaga and Sellepack (1995).