PPT-Phylogeny of Birds – Class Aves

Birds first appear unambiguously in the fossil record in the Jurassic 150 mya First bird is Archaeopteryx Transitional form between reptiles and modern birds Possessed reptilian skull with teeth long bony tail and claws on digits but had feathers just like modern birds. Characteristics. Over 9900 species. Outnumber all other vertebrates except fishes. Single unique feature set apart birds from other animals. Feathers - If it has feathers it’s a bird. Entire anatomy is designed around flight. . About 9,000 species of . birds. are in the . class Aves. ..   Bird classification is based on beak and foot types, and some habitats and behaviors. . Birds of prey have notched beaks and sharp talons. . 18A. Common Characteristics. Covered with feathers. Have thin-walled, often hollow bones (these bones are not lighter, but they are denser, stiffer, and stronger). Require enormous amounts of energy. Birds are reptile like animals that maintain a constant. internal body temperature. . They have an outer covering of feathers, 2 legs that . are covered with scales and front limbs modified. into wings.. up front. Objective:. I will be able prepared to take the EOC Marine Final. Agenda:. Phylum Test!. EOC Review. Aves . group . send me any documents you need printed!. Homework:. Fish Food Project. Monday. Feathers – insulation and flight. 1. . Modified scales that help regulate body temperature.. 2. . Structure . and variety varies from bird to bird.. Structure Types. . Contour – Covers the body, wings and tail. Scientists use morphological evidence & blood proteins, chromosomes & DNA to classify birds . beaks, feet, plumage(feathers), bone structure & musculature are examples of morphological evidence . Feathers – insulation and flight. 1. . Modified scales that help regulate body temperature.. 2. . Structure . and variety varies from bird to bird.. Structure Types. . Contour – Covers the body, wings and tail. . . &. Nick Zorn. Class Aves. A. round . 10,000 living . species. Largest number of species out of all . Tetrapods. Adaptations of birds:. Hollow Bones. Beaks. Feathers. Wings . Order . Sphenisciformes. cat sized in Pangea—climate warm, no ice caps. Herbivores. Size—Most dinosuars are big. Spinosaurus a huge aquatic dinosaur. Making a model of Spinosaurus—15 meters long. What are the selective advantages . Lección con un pajarera virtual de . ASU Ask A Biologist - askabiologist.asu.edu/activities/birds. La ciencia aprende a volar - Lección II - sonidos de las aves. Las aves "cantan" para atraer a compañeras y anunciar sus territorios. . Johanne Ahrenfeldt . PhD Student. Overview. What is Phylogeny? . How has it been used in the past?. Advantages of WGS based phylogeny. - Vibrio . cholerae. . case. BREAK. How are we using it?. CSI phylogeny & . . Streptomycetaceae. Alan Ward. Motivation. Streptomyces . taxonomy. 16S. Whole genome sequencing. A bigger 16S phylogeny. Where is the diversity. The type strains. On the basis of teeth, claws on fingers, tail vertebrae and hand bones, class Aves is divided into two sub-classes . TWO SUB-CLASSES OF CLASS AVES . Sub-class . Archaeornithes. Sub-class Neornithes .