Lecture13Sharks

Lecture13Sharks - Sharks Phylum Chordata Subphylum...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Sharks Phylum Chordata Subphylum Urochordata (tunicates, 3,000 species) Subphylum Cephalochordata (lancelets, 30 species) Subphylum Craniata (vertebrates animals with backbones; 57,674 species) Class ' Agnatha (jawless vertebrates; 100+ species) Subclass Myxinoidea (hagfish; 65 species) Subclass Petromyzontida (Lampreys) Subclass Conodonta Subclass Pteraspidomorphi (Paleozoic jawless fish) Order Anaspida Order Thelodonti (Paleozoic jawless fish) Infraphylum Gnathostomata ( jawed vertebrates) Class Placodermi (Paleozoic armoured forms) Class Chondrichthyes (cartilaginous fish; 900+ species) Class Acanthodii (Paleozoic "spiny sharks") Class Osteichthyes (bony fishes; 30,000+ species) Subclass Actinopterygii (ray-finned fish; about 30,000 species) Subclass Sarcopterygii (lobe-finned fish) Superclass Tetrapoda (four-legged vertebrates; 18,000+ species) Class Amphibia (amphibians; 6,000 species) Class Reptilia (reptiles; 8,225+ species) Class...
View Full Document

This note was uploaded on 02/22/2012 for the course MSCI 102 taught by Professor Benner during the Spring '10 term at South Carolina.

Page1 / 17

Lecture13Sharks - Sharks Phylum Chordata Subphylum...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online