'Ray finned fishes' diaporamas de présentation

Chapter 8

Chapter 8. Marine Fishes. Classification of Fishes. Marine Fish. Marine fish are vertebrates They were the first vertebrates 500 million years ago. Fish are the oldest of vertebrates (found farther back in the fossil record )

1.17k views • 88 slides

Chapter 8

Chapter 8. Marine Fishes. Classification of Fishes. Marine Fish. Marine fish are vertebrates They were the first vertebrates 500 million years ago. Fish are the oldest of vertebrates (found farther back in the fossil record )

1.14k views • 88 slides

How to Use This Presentation

962 views • 80 slides

Chapter 34

Chapter 34. Vertebrates. Vertebrates. Get their name from vertebrae, the series of bones that make up the backbone. Vertebrates. There are approximately 52,000 species of vertebrates

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Chapter 34 Vertebrates

Chapter 34 Vertebrates. A. Invertebrate Chordates and the Origin of Vertebrates ? The vertebrates belong to one of the two major phyla in the Deuterostomia, the chordates . ? Chordates are bilaterian animals, belonging to the Deuterostomia .

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How to Use This Presentation

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Chapter 34

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A hypothetical phylogeny of chordates

Chordates. Craniates. Vertebrates. Gnathostomes. Osteichthyans. Lobe-fins. Tetrapods. Amniotes. Echinodermata (sister group to chordates). Cephalaspidomorphi (lampreys). Chondrichthyes (sharks, rays, chimaeras). Amphibia (frogs, salamanders). Cephalochordata (lancelets).

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The Chordata

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Class Agnatha 80 species of hagfishes and lampreys Skin lacks scales and plates

Class Agnatha 80 species of hagfishes and lampreys Skin lacks scales and plates Cartilaginous skeleton, unpaired fins Notochord remains throughout life Some are parasitic Hagfishes are marine; most lampreys live permanently in fresh water All lampreys reproduce in fresh water.

662 views • 33 slides

Class Agnatha 80 species of hagfishes and lampreys Skin lacks scales and plates

Class Agnatha 80 species of hagfishes and lampreys Skin lacks scales and plates Cartilaginous skeleton, unpaired fins Notochord remains throughout life Some are parasitic Hagfishes are marine; most lampreys live permanently in fresh water All lampreys reproduce in fresh water.

344 views • 33 slides

Class Agnatha 80 species of hagfishes and lampreys Skin lacks scales and plates

Class Agnatha 80 species of hagfishes and lampreys Skin lacks scales and plates Cartilaginous skeleton, unpaired fins Notochord remains throughout life Some are parasitic Hagfishes are marine; most lampreys live permanently in fresh water All lampreys reproduce in fresh water.

348 views • 33 slides

common characteristics internal skeleton of cartilage or bone

Phylum Chordata Subphylum Vertebrata. common characteristics internal skeleton of cartilage or bone dorsal nerve cord surrounded by vertebrae bony cranium encompassing a complex brain notochord only in embryo. Nine Living Classes 5 classes of fishes Class Amphibia Class Reptilia

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The Bony Fishes

The Bony Fishes. Ceolacanths: Lobed finned fishes. Ceolacanths: Lobed finned fishes. Ceolacanths are relics of an evolutionary line that gave rise to the tetrapods, or land vertebrates.

179 views • 15 slides