Chordate genomics is the study of the evolution of the
chordate clade based on a comparison of the genome s of several species within
Kaynak: Chordate genomics The earliest organisms that can be classified as fish were soft-bodied
chordate s that first appeared during the Cambrian period.
Kaynak: FishCraniata (sometimes Craniota) is a proposed clade of
chordate animal s that contains the Myxini (hagfish), Petromyzontida (including
Kaynak: CraniataThe notochord is a flexible rod-shaped body found in embryo s of all
chordate s. It is composed of cell s derived from the mesoderm and
Kaynak: NotochordThe Calcichordate Theory holds that each separate lineage of
chordate (Cephalochordate s, Urochordate s, Craniate s) evolved from its own
Kaynak: Calcichordate TheoryIn the developing
chordate (including vertebrate s), the neural tube is the embryo 's precursor to the central nervous system , which
Kaynak: Neural tubeYunnanozoon lividum ("Livid Animal of Yunnan") is a suspected a hemichordate or
chordate from the Lower Cambrian , Chengjiang biota of
Kaynak: YunnanozoonHaikouella is a probable
chordate from the Lower Cambrian Maotianshan shales of Chengjiang County in Yunnan Province, China .
Kaynak: HaikouellaCephalochordata (from Greek : κεφαλή kephalé, "head" and χορδή khordé, "chord") is a
chordate subphylum defined by the presence of a
Kaynak: CephalochordataMyllokunmingia is a
chordate from the Lower Cambrian Maotianshan shales of China , thought to be a vertebrate , although this is not
Kaynak: MyllokunmingiaCyclostomata is a group of
chordate s that comprises the living jawless fish es: the lamprey s and hagfish es. Both groups have round
Kaynak: CyclostomataThe conus arteriosus is a conical pouch formed from the upper and left angle of the right ventricle in the
chordate heart , from which
Kaynak: Conus arteriosus