The lancelet notochord, unlike the vertebrate spine, extends into the head. This gives the subphylum, Cephalochordata, its name (κεφαλή, kephalē means 'head'). The fine structure of …

Cephalochordate, any of more than two dozen species belonging to the subphylum Cephalochordata of the phylum Chordata. Small, fishlike marine invertebrates, they probably …

Nov 28, 2023 · The sub-phylum Cephalochordata comprises a group of marine animals that exhibit major chordate features, characterized by a notochord extending from the tip of the tail …

Introduction to the Cephalochordata It's a long way from amphioxus. . . With about twenty-five species inhabiting shallow tropical and temperate oceans, the Cephalochordata are a very …

Cephalochordata is defined as the most recent common ancestor of lancelets and Craniata, and all of that ancestor's descendants. Cephalochordates are diagnosed by the presence of …

Cephalochordata (or lancelets, traditionally known as amphioxus, plural amphioxi) is a subphylum of marine invertebrates of the phylum Chordata. They are usually found in shallow parts of …

Jan 3, 2025 · Cephalochordates, represented by lancelets such as Branchiostoma (formerly Amphioxus), are considered the most primitive of the chordates. They retain all five chordate …

As the closest living relatives of vertebrates, cephalochordates occupy an eminent phylogenetic position. They are invaluable in reconstructing the evolutionary step from invertebrate to …

Amphioxus, or cephalochordates, are often used as the living invertebrate proxy of vertebrate ancestors and are widely used as evolutionary biology models of chordates.

Apr 12, 2024 · Cephalochordata, also known as lancelets or amphioxus, is a subphylum within the phylum Chordata. These marine animals are characterized by their segmented and elongated …