'Class reptilia' presentation slideshows

Introduction to animals

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Class Reptilia

Class Reptilia. 1. 2. History. Reptiles are the evolutionary base for the rest of the tetrapods . Early divergence of mammals from reptilian ancestor. Early reptiles arose from amphibian ancestor and were small, lizard-like insectivores . 3. Class Reptilia. Scales Amniotic egg

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The Chordata

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Vertebrates

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Chordata

Chordata. Phylum Chordata. Subphylum Urochordata. Subphylum Cephalochordata. Subphylum Vertebrata. Agnathans Fish Sharks tetrapods. tunicates. lancets. Characteristics of Chordates. Possible evolution of 1 st fish. 1 st fish. lancelet. Proto-vertebrate. Adult tunicate.

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4 Defining Characteristics

4 Defining Characteristics. 1. Notochord - extends through length of the body as a simple skeleton 2. Dorsal, hollow nerve cord 3. Pharyngeal gill slits 4. Muscular postanal tail. Three Subphylum. Urochordata Tunicates Cephalochordata Lancelets Vertebrata Fish Amphibians

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Characteristics of Reptiles

Characteristics of Reptiles. Characteristics of Reptiles. Class Reptilia includes snakes, lizards, crocodiles, alligators and extinct dinosaurs. The majority of reptiles are terrestrial and are adapted to a wide range of habitats. Crocodile or alligator?. Gila monster Heloderma suspectum.

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Chapter 13

Chapter 13. Classification of Marine Organism. Meet the Players:. Classification of Marine Organisms All organisms on the Earth are classified into one of 5 kingdoms . . The kingdoms are divided into Phyla (singular is phylum ) or Divisions (for the Kingdom Plantae).

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2.3.1 Taxonomy and Classification

2.3.1 Taxonomy and Classification. Classification. The science of grouping organisms based on their similarities. Why we classify?. To help identify organisms To draw parallels and distinctions between organisms To identify relationships between organisms

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How Herps Survive the Winter

How Herps Survive the Winter. Jennifer Holgate and Lindsey Whitebread. What is Herpetofauna (Herps)?. Herpetology. The study of amphibians and reptiles. Reptiles.

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Class Reptilia (Reptum = creep) CONQUEST OF LAND

Class Reptilia (Reptum = creep) CONQUEST OF LAND. Class Reptilia. First reptiles known from 280 million years ago, during the Permian period; greatest radiation of reptiles in Triassic (after the Permian) 230 million years ago, Mesozoic era (230-70 million years ago) age of dinosaurs;

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Phylum Chordata

Phylum Chordata. Derived Characters of Chordates. All chordates share a set of derived characters Chordates are bilaterian animals that belong to the clade of animals known as Deuterostomia There are four key characters of chordates

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Phylum Chordata

Phylum Chordata. Deuterostome development Dorsal hollow nerve cord from ectoderm Notochord Stiff rod between nerve cord & intestine Support for muscular movements Pharyngeal gill slits Slits allow water to escape before stomach Post-anal tail. Phylum Chordata. Subphylum Urochordata

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Phylum Chordata

Phylum Chordata. Characteristics of Chordates. Notochord Dorsal nerve cord Pharyngeal pouches or gill slits Postanal tail. Subphylum Cephalocharodata- This subphylum is composed of about 2 dozen blade-shaped animals known as lancelets. They retain all characteristic throughout life.

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Lesson 19: Vertebrates I Marine Biology

Lesson 19: Vertebrates I Marine Biology. Vertebrates: Animals with a backbone. Animals in the sub-phylum Vertebrata have spinal cords and brains Marine vertebrates include: sharks, fish, turtles, birds, seals and whales Can you think of others?. Classification Overview Common Vertebrates

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Chordates, Part 2

Chordates, Part 2. Subphylum Vertebrata (cont.). Plus paired appendages (2 pair). Cranium formed from neural crest cells. Notochord; Dorsal, hollow nerve tube; pharynx with slits, post-anal tail (with segmented muscle bands). The amniotic egg. Shell : Retains water

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All About Cobras

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All About Cobras

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Survey of Animals from the Phylum Chordata

Survey of Animals from the Phylum Chordata. Sub Phylum Vertebrata. Common Chordate Features. All Chordates, at some point in their lives have four features: (Click). Notochord: a rod of stiffened tissue supporting the body (later develops into bony units comprising the vertebral column).

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