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Order: Pristiophoriformes Family: Pristiophoridae 			(Sawsharks)

Order: Pristiophoriformes Family: Pristiophoridae (Sawsharks)

Order: Pristiophoriformes Family: Pristiophoridae (Sawsharks). Etymology: Greek, pristis= “saw”. Pliotrema P. warreni (Sixgill sawshark). Pristiophorus P. Cirratus (Longnose shark) P. japonicus (Japanese sawshark) P. nudipinnis (Shortnose sawshark)

By Anita
(447 views)

Evidence for Evolution

Evidence for Evolution

Evidence for Evolution. One of the major ways in which scientists can observe evolution is by looking at small-scale evolutionary phenomena. This is known as microevolution. Microevolution describes changes that occur within a population of a single species. Peppered moth

By kamala
(134 views)

Chordates and Fishes

Chordates and Fishes

Chordates and Fishes. Characteristics of Chordates A chordate is an animal that in some stage of development has: Notochord- dorsal rod of specialized nerves A dorsal nerve chord- hollow tube just above the notochord Pharyngeal pouches- small out pockets of the anterior gut

By princess
(174 views)

Evidence for Evolution

Evidence for Evolution

Evidence for Evolution. One of the major ways in which scientists can observe evolution is by looking at small-scale evolutionary phenomena. This is known as microevolution. Microevolution describes changes that occur within a population of a single species. Peppered moth

By morela
(95 views)

Which classification system makes use of multiple levels from domain to species?

Which classification system makes use of multiple levels from domain to species?

Which classification system makes use of multiple levels from domain to species?. A. Aristotle’s Chain of Being. Linnaean system. Cladistics. D. None of the above. Which classification system makes use of multiple levels from domain to species?. A. Aristotle’s Chain of Being.

By pascha
(98 views)

Invertebrates

Invertebrates

Invertebrates. Octopus Video. Phylum Chordata. C. Vertebrata Share four chordate characteristics + vertebral column (spine, backbone) Spine encloses and protects nerve cord (spinal cord) Anterior end of spinal cord = brain protected by skull made of bone or cartilage 1. Fishes

By eunice
(103 views)

Animal Kingdom

Animal Kingdom

Animal Kingdom. SB3b. Compare how structures and functions vary between the 6 kingdoms (Animals) . General Characteristics of the Kingdom :. All animals are multicellular . Their cells group together to form tissues which then group to form organs which further group into organ systems.

By tacey
(101 views)

Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES

Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES

Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES. The Chordates… . A division comprising vertebrates. Coelomate, bilateral animals. Most are vertebrates; only a few are invertebrates . Distinct Features of Chordates. A notochord Tubular, dorsal nerve cord

By hila
(112 views)

Back to Chapter 7

Back to Chapter 7

Back to Chapter 7. The Marine Worms. So far, this chapter…. Marine animals without a backbone Vertebrates vs. invertebrates Vertebrates have a backbone (a row of bones called vertebrae) 97% of all animal species are invertebrates Animals Multicellular Cannot manufacture own food.

By gen
(170 views)

Vertabrate Project

Vertabrate Project

Vertabrate Project. By Danielle Shewmake Period 4. Myxine glutinosa a.k.a. Hagfish Class: Agnatha. Hagfish ( A gnatha ). Statistics:. Creative Facts:. Cold Blooded 2 heart Chambers External Fertilization Habitat: Deep Sea Jawless, elongated eel-like bodies Lateral line system

By wilmet
(95 views)

April 25 Computer Lab

April 25 Computer Lab

April 25 Computer Lab. Use the powerpoint to take your notes! Play the games and fill in your paper! . Why is it called Natural selection?. Darwin saw how similar it was to artificial selection

By fadhila
(59 views)

Shark Scavenger Hunt

Shark Scavenger Hunt

Shark Scavenger Hunt. All About Sharks.

By jayme
(215 views)

Cartilaginous Fishes

Cartilaginous Fishes

Cartilaginous Fishes. Class Chondrichthyes. Cartilaginous Fishes. This group includes: sharks, rays, skates, and ratfishes. Characteristics of Cartilaginous Fishes. Have a skeleton made of cartilage (lighter and more flexible than bone).

By velvet
(200 views)

Types of Fishes

Types of Fishes

Types of Fishes. Three types of fishes: Jawless fishes Cartilaginous fishes Bony fishes. Jawless Fishes. Class Agnatha Decendants of Ostracoderms (armored fishes) Lack jaws , feed by suction with the aid of a round, muscular mouth and rows of teeth

By lorie
(776 views)

What are the ten major phyla in the Animal Kingdom?

What are the ten major phyla in the Animal Kingdom?

What are the ten major phyla in the Animal Kingdom?. Intro. to the 10 Major Animal Phyla. Phylum Porifera. Composed of sponges About 10,000 species. Considered to be the 1 st group of animals on Earth. Sponge body even contains cells that resemble protists . Choanocytes.

By lonato
(516 views)

Chordata

Chordata

Chordata. All vertebrates are chordates, but not all chordates are vertebrates. Traits – at some time in their lives. Dorsal notochord. In vertebrates, the notochord is replaced with a backbone. Traits. Dorsal nerve cord. Traits. Gill slits. Traits. Post anal tail. Prevertebrates.

By enoch
(159 views)

Table of Contents

Table of Contents

Table of Contents. Chapter Preview 12.1 What Is a Vertebrate? 12.2 Fishes 12.3 Amphibians 12.4 Reptiles 12.5 Birds 12.6 Mammals. 12.1 Structure and Function of Vertebrates 12.2 Fishes 12.3 Amphibians 12.4 Reptiles 12.5 Birds 12.6 Mammals. Chapter 12 Preview Questions.

By sophie
(120 views)

Classification & The Animal Kingdom

Classification & The Animal Kingdom

Classification & The Animal Kingdom. Classification : the grouping of anything according to its similar characteristics. The science of classifying organisms is known as taxonomy . How are Organisms Classified?. There are eight classification groups of living things: Domain Kingdom

By abeni
(4314 views)

Phylum Chordata

Phylum Chordata

Phylum Chordata. A Chordate is an animal that has 4 specific characteristics during their life cycle: 1- Dorsal, hollow nerve cord 2- Notochord – a long supporting rod that runs through the body below the nerve cord 3- Post anal tail 4-Pharyngeal pouches (gill slits).

By atira
(340 views)

Chapter 26: Animal evolution - The C hordates

Chapter 26: Animal evolution - The C hordates

Chapter 26: Animal evolution - The C hordates. Ruth Cuaboy. C haracteristics of C hordates. Notochord ; connective tissue extending along body . To provide support . Dorsal: Nerve cord . Gill slits : along the throat ( pharynx ) Muscular tail : extending tail beyond the anus .

By rowena
(77 views)

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