what subphylum are these chordates?
Cephalohordata, common name is invertebrate chordates (lancelets)
As chordates, these animals are characterized by the presence of a notochord and a dorsal hollow nerve cord, among other features. However, to determine their subphylum, we need more specific information about the animals in question. There are three subphyla of chordates:
1. Urochordata (Tunicates): These are marine filter-feeding animals that spend most of their lives as sessile, vase-shaped organisms attached to substrates. They have a notochord and dorsal nerve cord in their larval stage but lose these in their adult stage.
2. Cephalochordata (Lancelets): These are small, fish-like filter feeders that bury themselves in sand or mud. They have a notochord and dorsal nerve cord throughout their lives, and are considered the most primitive of all living chordates.
3. Vertebrata (Vertebrates): These are animals with backbones, which are composed of bone or cartilage, that house and protect the dorsal nerve cord. Vertebrates have a diverse array of body plans and include fish, amphibians, reptiles, birds, and mammals.
Therefore, to determine the subphylum of a chordate, we need to identify the specific characteristics and features of the animal in question.
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