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34A InvtbChrdtsOrgnVrtbrts by salehjunejo68 is a document available to read on EtoBox.
What is 34A InvtbChrdtsOrgnVrtbrts about?
The document discusses vertebrate evolution, highlighting the four anatomical features that characterize the phylum Chordata: notochord, dorsal hollow nerve cord, pharyngeal slits, and postanal tail. It explains the significance of invertebrate chordates, such as urochordates and cephalochordates, in understanding the origins of vertebrates and suggests a two-stage evolutionary process. Recent fossil discoveries in China are noted as evidence supporting the transition from cephalochordates to vertebrates.
- Author
- salehjunejo68
- Language
- EN