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CVA Chp. 1-3 Quiz

Across
Scientific classification used to describe opossums and kangaroos.
The most basal group of Chordata.
The portion of a phylogenetic tree that connects the nodes; it represents a lineage (or population) changing through time.
Fossil form whose features will give rise to early Tetrapods (amphibians).
Fossil form if Diapsida lacking articulation between the pelvic girdle and vertebral column.
In this clade, mesoderm forms from outpockets of the gut. Radial cleavage. Ends in -ata
A term describing a traits that evolved from a common ancestor
The region of the brain in control of vision and vibration sensory (eyes & ears).
In this large clade, the mesoderm forms in lateral cords, and the cleavage pattern is spiral. Ends in -ata
Analogous characters are a _______ if they are used on phylogenies; errors on a phylogeny.
In a phylogenetic analysis, if birds are excluded from the group Reptilia, then the Reptilia is a ____ group.
Fossil form to first have cellular bone.
A shared derived character.
Down
The term used to describe the concentration of sense organs, nervous control, etc. at the anterior end of the Craniate body.
Fossil form known as the earliest known Tetrapod
This is the clade of jawed vertebrates; they have cellular bone plus 5 synapomorphies. Ends in -ata
This word describes a thickening of the ectoderm. A certain type of these is found in craniate embryos & which later become sensory structures.
The explanation requiring the fewest number of steps on a phylogeny.
The part of the amniotic egg that collects waste.
Scientific classification used to describe marsupials.
The sister group to Craniates.
The part of the amniotic egg that allows gas exchange.