Chapter 11 Handout- A Brief History of Fishes - BIOL 3705 Chapter 11 A Brief History of Fishes Name Zoelle Reinke Instructions Complete the following

Chapter 11 Handout- A Brief History of Fishes - BIOL 3705...

This preview shows page 1 - 2 out of 3 pages.

BIOL 3705 Chapter 11: A Brief History of Fishes Name: Zoelle Reinke Instructions- Complete the following handout as thoroughly as possible using your textbook and Moodle PowerPoint files to assist you. Type your answers into this document, print, and turn in by the due date. Handouts are to be completed by each student independently. Section 1: Vocabulary (*Pay attention to instructions.) For the given term, provide the distinguishing character(s) and at least one example fish or taxonomic group (where appropriate) that is representative of the group. Myxini- These are hagfish. These fish are shaped like an eel and they produce slime. They have a skull but lack a vertebral column. They do not have a jaw. They have tails that are paddle-like. They do have tooth-like structures that are made of keratin. Actinistia- This is a subclass. An example is the coelacanths. They have small vertebrae centra, they have a prominent notochord. Also their swim bladder is filled with fat. They have a spiny, lobate first dorsal fin, a three lobed caudal fin, and a fringed lobe. Acipenseriformes- These are an order of basal ray-finned fishes. They include sturgeons and paddlefishes. They have a cartilaginous endoskeleton, they do not have a vertebral centrum, and they have a spiral valve intestine, and have a conus arteriosus. Amiiformes- This is an order of fish that is the bowfin. IT has a heterocercal tail and a rudimentary spiral valve intestine. It can also have cycloid scales. Its head is also pretty bony. It has a single, median gular plate under its head. Placodermi- “plate skin”. They are covered with a thick bony shield. They are also considered to be the most diverse vertebrates of their time. Their bony skin is divided into a head and trunk portions and have joints that allow the head to be lifted when it feeds. They have some unique structures such as

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture