Biostratigraphy of the Silurian and Devonian gnathostomes
of the Euramerica Province.
albus populations, gnathostomes
were only collected from swamp eels from the Tampa population (Table 1).
phylogeny revisited: multiple method consensus.
To address the question of whether deployment and function of lamprey cognates of gnathostome
neural crest genes are evolutionarily conserved, we performed moderate-throughput transcriptome analysis, identifying more than 50 genes involved in neural crest formation in lamprey.
Perhaps, as in other systems such as jaws (Shigetani et al., 2002), the vertebrate endocrine system (Campbell et al., 2004), and antibody-mediated immunity (Klein and Nikolaidis, 2005), preexisting pieces were connected into the myelination process by gnathostome
Because these two species have independent evolutionary histories covering hundreds of millions of years, mRNAs common to OL processes in both species likely represent proteins recruited to form the original myelin sheaths in the common gnathostome
They were evolved from stem lineage of jawed vertebrates (gnathostomes
) because of two genome duplication events (Stroz, 2016).
Comparative Anatomy is a discipline that deals with the study of the changes occurring during embryonic development (ontogenetic change) and throughout the evolutionary history (phylogenetic change) of the different groups of vertebrates, mainly gnathostomes
(fish, amphibians, reptiles, birds and mammals).
Cranial muscles of the anurans Leiopelma hochstetteri and Ascaphus truei and the homologies of the manibular adductors in Lissamphibia and other Gnathostomes
Similarities between the two branches of gnathostomes
provide an insight into the last common ancestor of jawed vertebrates.
The group gnathostomes
, meaning "jaw-mouths," includes tens of thousands of living vertebrate species, ranging from fish and sharks to birds, reptiles, mammals and humans.