How To Use gnathostome In A Sentence
- Modern vertebrates are classified into two major groups, the gnathostomes (jawed vertebrates) and the agnathans (jawless vertebrates).
- Either a basal gnathostome such as a shark or a basal actinopterygian such as a sturgeon would be equally instructive.
- Their presence suggests the feature appeared in a common ancestor of jawed vertebrates, or gnathostomes.
- The symmetrical, diphycercal tail, not perfected by gnathostomes until the Cretaceous, was standard equipment on heterostracans in the Silurian.
- During this period the agnathan and gnathostome fishes, too, gave rise to many distinctive groups: the armoured ostracoderm and placoderms, the bony fishes, and elasmobranchs to populate marine and freshwater environments.
- The extinct armored fishes known as placoderms make up what is considered to be the earliest branch of the gnathostome family tree - the earliest branch of the jawed fishes.
- Certainly it does not acheive a result more consonant with the accepted gnathostome phylogeny. Panderichthys rhombolepis - The Panda's Thumb
- The extinct armored fishes known as placoderms make up what is considered to be the earliest branch of the gnathostome family tree - the earliest branch of the jawed fishes.
- In all the Gnathostomes the Wolffian duct is converted into the spermaduct, and the Mullerian duct into the oviduct. The Evolution of Man — Volume 2
- The extinct armored fishes known as placoderms make up what is considered to be the earliest branch of the gnathostome family tree - the earliest branch of the jawed fishes.
