Description
An Amphioxus chart (55×90 cm) is a large-format, laminated educational wall poster illustrating the structure and biological features of Amphioxus (Branchiostoma/lancelet), a primitive chordate that plays a key role in zoology and comparative anatomy education.
Chart Features and Content
Chart Size and Material: 55 × 90 cm, typically laminated for moisture, tear, and dust resistance, tailored for classroom and laboratory wall display.
Main Diagram: Shows a laterally compressed, transparent body with a pointed snout and tail, and outlines the following key features:
Notochord: Extends the entire length of the body and persists throughout life (a hallmark of chordates).
Dorsal tubular nerve cord: Positioned above the notochord.
Pharyngeal gill slits: Numerous, aligned pairs in the pharynx region for filter feeding and respiration.
Post-anal tail: The tail’s extension beyond the anus, another chordate characteristic.
Oral hood, myotomes (muscle blocks), fin rays, endostyle, atrium, hepatic caecum, gonads, anus, and atriopore (excretory opening).
Functional Annotations: Labels and side notes frequently detail:
Feeding (filter feeding via cirri and pharyngeal slits)
Nervous system (simple brain, eye spots)
Closed circulatory system (lacks true heart)
Reproductive biology (separate sexes, external fertilization, larval stages).
Educational Alignment: Designed for undergraduate and senior school biology; reinforces lessons on chordate evolution, basic anatomy, and animal diversity.
Institutional and Catalog Use
Used widely in zoology departments, NEET/medical prep, and curriculum-aligned lessons on animal phylogeny and vertebrate precursors.
Available from Flipkart and major biological chart suppliers. These meet cataloging standards for scientific illustration, durability, and color quality.
For digital or print catalog inclusion, select charts with scientifically accurate, clearly labeled diagrams and certified chordate feature identification.