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Invertebrate Chordates Hemichordata Urochordata Cephalochordata
Hemichordates Deuterostomes Gill slits Dorsal nerve cord
Classes of Hemichordates Enteropneusta –Acorn worms –Shallow marine animals Pterobranchia –Rhabdopleura –Colonial, send out feeding zooids
Phylum Chordata All chordates are deuterostomes At some time in their life, all chordates have: –Notochord –Pharyngeal gill slits –Dorsal, hollow nerve cord –Postanal tail
Subphylum Urochordata Sea squirts or tunicates Larvae show the characteristics of chordates Adults lose notochord, nerve cord, and tail Only animals to have cellulose in their bodies!
Tunicates: Are filter feeders Do not have complex nervous systems Often form large colonies Are monoecious
Subphylum Cephalochordata Lancelets (Amphioxus) Notochord runs from head through tail Muscles can contract the notochord Live partially buried in marine sediment Filter feeders Dioecious
Hemichordata and Invertebrate Chordates Chapter 17 Notes 1.
Chapter 7 Phylum Hemichordata Phylum Chordata. Phylum Hemichordata Characteristics: Characteristics: –Rare group, but these worms seem to span a gap between.
Chapter 38 Section 2 Invertebrate Chordates. Phylum Chordata Chordates- animals with a vertebrate (backbone) Have a notochord, pharyngeal pouches, dorsal.
Phylum Chordata. Nonvertebrate chordates Fishes Amphibians Reptiles Birds Mammals Invertebrate ancestor Chordate Cladogram.
Hemichordata Invertebrate Chordates. Evolutionary Perspective Echinoderms, Hemichordates, and Chordates are most likely derived from a common (yet undiscovered)
Hemichordata and Invertebrate Chordates. Phylum Hemichordata Bilaterally symmetrical. Body divided into three sections, a proboscis, a collar and a trunk.
Phylum Chordata 1 Tunicates Amphioxus. Phylum Chordata 2 Included are 48,000 species the majority of which are vertebrates – 1,400 species are invertebrates.
Marine Vertebrate Zoology Vertebrate Ancestry How did it all begin?
Marine Invertebrates (Part 3). Phylogenetics Protostomes (mouth first) Deuterostomes (mouth second) Embryo cell division simple
+ Phylum Chordata The Lower Chordates. + The Phylum Chordata Includes: 1. Subphylum Cephalochordata (=lancelets) 2. Subphylum Urochordata (= tunicates)
Invertebrate Chordates Copyright © McGraw-Hill Education Invertebrate Chordate Features Invertebrate chordates are deuterostomes with additional features.
Chapter 31 Echinoderms and Invertebrate Chordates Section 1: Echinoderms Section 2: Invertebrates Chordates.
Phylum Chordata the chordates. Phylum Chordata chordates Primary characters include: –Notochord.
Origin of Chordates BIOL 495 – Chapter Two. Comparative Vertebrate Anatomy.
Chordates are Bilaterian Deuterostomes. Phylogeny (cont.) 5 Classes (before tetrapods) 1.Agnatha Jawless fish; hagfish and lampreys 2.Chrondrichthes Sharks,
Phylum Chordata SBI 3U. What are Chordates? Chordates are animals with a nerve cord, notochord and gill slits (at least at some point in their lives)
Phylum Chordata The chordates. Five Chordate Hallmarks Notochord – flexible rodlike structure; extending length of body.
Chordates Ch What is a chordate From the Phylum CHORDATA (kingdom ANIMALIA) Must have 4 characteristics at some point during their life cycle Dorsal,
Animal Diversity 3 Deuterostomes: Echinodermata and Chordata.
Kingdom Animalia Phylum Chordata Chapter The Tunicates, Lancelets and Vertebrates,
Phylum Hemichordata Marine worms Share characteristics with echinoderms and chordates Deuterostomes (radial cleavage) Pharyngeal gill slits Some have dorsal,
Chapter 30 30:1 The Chordates. Why Chordate? Even though many of the animals in this chapter and future chapters have different characteristics, they.
Phylum Cordata Introduction to the Fish Protochordates and Jawless Fishes.
29.2 Section Objectives – page 770 Summarize the characteristics of chordates. Section Objectives: Explain how invertebrate chordates are related to vertebrates.
Chordates An Introduction. Kingdom Animalia- All inverts & verts 1.Phylum Chordata: All have nerve cords. 3 subphyla : A- Urochordata (tunicates aka sea.
Nonvertebrate Chordates, Fishes, and Amphibians. What Is a Chordate? Members of the phylum Chordata are called chordates. A chordate is an animal that.
Phylum Chordata. Deuterostomes The four traits ALWAYS –Notochord –Pharyngeal slits/pouches –Hollow, dorsal nerve cord –Postanal tail Other traits –Endostyle.
Phylum Chordata Chordates. Basic Overview Four main qualities make a Chordate. At some time during their development (humans included) Chordates have.
Chordates 1. Chordate Taxonomy Chordates: 1.Single dorsal hollow nerve cord 2.Gill slits 3.Notochord.
Cephalochordates Urochordates (Ascidians) Vertebrates Hemichordates Echinoderms Ambulacraria Deuterostomia Phylum Chordata.
Phylum Chordata- the chordates! Pages key characteristics at some point: 1. dorsal, hollow nerve cord- nerves branch off from this 2. notochord-
Unit 8 Chapter 29 Echinoderms and Invertebrate Chordates.
Echinoderms & Early Chordates Second major branch of animal evolution Present in Cambrian period *Crinoids (sea lilies) dominant at end of Paleozoic Deuterostomes.
Invertebrates 6 Phylum Echinodermata. Phylum Echinodermata: Spiny-skinned.
PHYLUM CHORDATA n THREE COMMON CHARACTERISTICS n I. NOTOCHORD; a cartilage support n rod sometime during development. n II. DORSAL NERVE CORD ;central.
Chordata: Urochordata and Cephalochordata Michelle Sit and Paul Riviere.
Chordates Characteristics that Unify this Group: 1.Notochord 2.Hollow, dorsal nerve cord 3.Pharyngeal slits.
Invertebrate Diversity III The coelomate deuterostomes: Phylum Echinodermata Phylum Hemichordata Phylum Chordata Subphylum Urochordata Subphylum Cephalochordata.
Contents Jenna Hellack Fall 2000 Lesser Deuterostome Phyla and Phylum Chordata(through agnathans)
Invertebrates Octopus Video. Phylum Echinodermata 1.Asteroidea (Sea Stars) – Keystone Species.
Introduction to Chordates Chapter 15. Basics Bilateral symmetry Segmented body Three germ layers Well-developed Coelom Endoskeleton Complete digestive.
Deuterostomes. Phylum Echinodermata Water vascular system Starfish moving view from aboral surface Starfish moving view from oral surface.
Marine Fishes BIOL265 Dave Werner. Kingdom Animalia – Phylum Chordata Major Characteristics found in all chordates: 1. Notochord – a stiff but flexible.
Phylum Chordata. Characteristics of all chordates Dorsal, hollow nerve cord Post-anal tail Gill pouches at some time in the live Notochord The most complex.
Chordates and Vertebrates The Agnatha – Jawless Fish.
What is a Vertebrate? Vertebrate Anatomy – Unit 1.
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