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Chordadieren (Chordata) vormen een stam in het dierenrijk, waartoe de gewervelden, slijmprikken, manteldieren en lancetvisjes behoren. De stam omvat alle dieren die, althans in aanleg, een chorda hebben. Dit is een flexibel, staafachtig orgaan in de rug van het dier. Van de oorspronkelijke chorda is meestal alleen in het embryonale stadium nog ...
The phylum Hemichordata includin the acorn worms haes been presented as a fowert chordate subphylum, but it nou is uisually treatit as a separate phylum. It, alang wi the echinoderm phylum, includin starnfish , sea urchins , an sea cucumbers an thair kin, is the chordates' closest relatives.
Vertebrates are members of the kingdom Animalia and the phylum Chordata. Recall that animals that possess bilateral symmetry can be divided into two groups—protostomes and deuterostomes—based on their patterns of embryonic development. The deuterostomes, whose name translates as “second mouth,” consist of two phyla: Chordata and ...
Overview of affinities [edit]. Attempts to work out the evolutionary relationships of the chordates have produced several hypotheses. The current consensus is that chordates are monophyletic, meaning that the Chordata include all and only the descendants of a single common ancestor which is itself a chordate, and that craniates' nearest relatives are cephalochordates.
Cordate. Chordata este o încrengătură de animale ce posedă coardă dorsală. Încrengătura include acraniatele, ciclostomatele, peștii, amfibienii, reptilele, păsările și mamiferele . Deși sunt foarte diverse, cordatele posedă caracteristici comune. Toate cordatele au schelet axial, intern.
Çordatët. Peshku prej xhami ( Kryptopterus vitreolus) është një ndër llojet e pakta që ka një shtyllë kurrizore të dukshme. Një Çordatë quhet çdo kafshë që i përket filumit Chordata. Çordatët karakterizohen nga një kurriz nervor dorsal dhe një bisht post-anal, për të paktën një periudhë kohore gjatë ciklit të tyre ...
Filum Chordata nyaéta golongan sato, kaasup vertebrata jeung sababaraha sato invertebrata nu boga ciri sarupa. Sakabéh anggota golongan ieu, dina hiji mangsa dina kahirupan maranéhanana, miboga notokorda, tali saraf dorsal berongga, celah faring (pharyngeal slits), endostyle, jeung buntut uratan nu ngaliwatan anus.
