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

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BIOL 3705Chapter 11:A Brief History of FishesName: Zoelle ReinkeInstructions- Complete the following handout as thoroughly as possible using your textbook and MoodlePowerPoint 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 distinguishingcharacter(s) and at least one example fish or taxonomic group (where appropriate) that is representativeof the group.Myxini-These are hagfish. These fish are shaped like an eel and they produce slime. They have a skullbut lack a vertebral column. They do not have a jaw. They have tails that are paddle-like. They do havetooth-like structures that are made of keratin.Actinistia-This is a subclass. An example is the coelacanths. They have small vertebrae centra, they havea prominent notochord. Also their swim bladder is filled with fat. They have a spiny, lobate first dorsalfin, a three lobed caudal fin, and a fringed lobe.Acipenseriformes-These are an order of basal ray-finned fishes. They include sturgeons andpaddlefishes. They have a cartilaginous endoskeleton, they do not have a vertebral centrum, and theyhave 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 spiralvalve intestine. It can also have cycloid scales. Its head is also pretty bony. It has a single, median gularplate under its head.Placodermi-“plate skin”. They are covered with a thick bony shield. They are also considered to be themost diverse vertebrates of their time. Their bony skin is divided into a head and trunk portions and have

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Term
Summer
Professor
NoProfessor
Tags
Ichthyology, upper jaw, segmented bony rays, jaw suspension

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