Tunicates are invertebrates.
Predatory tunicate was created in 1918.
tunicate
Clavelina picta.
bilateral symmetry.
The Tunicate in larva form are possibly the earliest link between chordates and their non vertebrate ancestors. The lancelet that have a notochord that persist through out development are possibly the oldest ancestor of the modern vertebrates.
Sea squirt
Yes. Sirens are in the Phylum Chordata, which means they have a spinal chord. In several species of sirens, a large amount of their skeleton is made of cartilage instead of bone, which makes them very delicate and flexible animals.
Claveline Picta belongs to a family of sea sponges, so the Painted Tunicate does live in salt water. Hope it helps =)
a tunic
Snakes are vertebrates.
vertebrates
adult tunicate