Marine Vertebrates: Fishes (Part 1). Chordates. Common features of all chordates: Dorsal (back) hollow nerve cord Notochord (flexible support rod, becomes backbone in vertebrates) Gill slits in the pharynx Post-anal tail Ventral heart. Phylum Chordata. SubphylumBy kirsi
Marine Vertebrates: Fishes (part 2). Fishes. Phylum Chordata Subphylum Vertebrata 3 Classes: Class Agnatha (jawless fishes) Class Chondrichthyes (cartilaginous fishes) Class Osteichthyes (bony fishes). Fishes - Anatomy. Cartilaginous fishes: Ventral mouthBy odele
Phylum Chordata. Phylum Chordata - Chordates. Chordates have these features at some point during their life Notochord - A firm, flexible rod of specialized cells that becomes the endoskeleton in vertebratesBy raanan
Table of Contents. What Is a Vertebrate? Fishes Amphibians Reptiles Vertebrate History in Rocks. - What Is a Vertebrate?. Ancient Jawless Fish.By lindsay
Table of Contents. What Is a Vertebrate? Fishes Amphibians Reptiles Vertebrate History in Rocks. - What Is a Vertebrate?. Ancient Jawless Fish.By hall-clayton
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Bony Fishes – Class Osteichthyes. Skeleton made of bone Two types of Scales 1) Cycloid scales – smooth 2) Ctenoid scales – tiny spines along their exposed borders. Cycloid scales have a smooth edge. Ctenoid scales have a toothed edge.
Bony Fishes (Osteichthyes). Bony fish ( Osteichthyes ) are the most successful and abundant of the 2 groups of fishes (96% of all fish; ~27,000 species)
Osteichthyes - Bony fishes. “Fish” versus “Fishes”. Fish- multiple fish that belong to the same species Fishes- multiple fish that belong to different species. Bony Fishes. All have… At least one bone in their skeleton Scales Gill cover (operculum) Lung or swim bladder >24,000 species
Superclass Osteichthyes bony fishes. Class Actinopterygii Ray finned fishes Class Sarcopterygii (lobe fin fishes) Lung fishes Coelocanth. Class Actinopterygii. Class Actinopterygii characteristics. bony dermal scales: ganoid, cycloid and ctenoid. Class Actinopterygii characteristics.
Osteichthyes (Bony Fish). By: Drew Massner & Austin Frank. Taxonomic Classification. Domain: Eukarya Kingdom: Animalia Phylum: Chordata Class: Osteichthyes Sockeye Salmon (Oncorhynchus nerka). Key Characteristics. They have a skeleton made at least partially of bone.
Bony Fishes. Skeletal System is made out of bones. 95% of all fishes are bony fishes. Have scales and a mucous over the scale that protects them. Can use rings on fish scales (circuli) to tell the age of fish. Bony Fishes Classification. Kingdom: Animalia (Animal)
OSTEICHTHYES BONY FISH. FINS. CAUDAL FORWARD MOVEMENT. PAIRED FINS. PECTORAL TURNING AND STOPPING PELVIC TURNING AND STOPPING. MEDIAL FINS. DORSAL BALANCE ANAL BALANCE. CAUDAL. HOMOCERCAL SAME / SYMMETRICAL HETEROCERCAL NOT SAME / ASYMMETRICAL. ASPECT RATIO.
Osteichthyes – “bony fish”. Examples – trout, carp, goldfish, tuna. Success. Most successful among the vertebrates – largest # of species . over 29,000 species. Ichthyology. Study of fish. Traits. Skeleton of bone. Traits. jaws. Parrot fish. Sheepshead fish. Traits.
Osteichthyes (a.k.a. “Bony Fish”). Class Osteichthyes. Largest number of species of all classes of vertebrates, more than 23,500 species. Cold-blooded Bony fishes share several distinguishing features:
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.