Draw a labeled diagram showing the fundamental characteristics of Phylum Chordata.

(N/A) The fundamental characteristics of Phylum Chordata include the following four features:
$1$. Notochord: $A$ flexible,rod-like structure providing support.
$2$. Dorsal hollow nerve cord: $A$ nerve cord located dorsally to the notochord.
$3$. Pharyngeal gill slits: Paired openings in the pharyngeal region.
$4$. Post-anal tail: $A$ muscular extension of the body beyond the anal opening.
The provided diagram illustrates these four key diagnostic features of chordates.