PPT-Trilobite Phylogeny www.trilobites.us

Teaching Tools Cambrian Lower Middle Upper Ordovician Lower Middle Upper Silurian Ediacaran Devonian Carboniferous Permian Redlichiida Olenellena Redlichina Agnostida. Phylogenies. The process of evolution produces a pattern of relationships between species. . As . lineages evolve and split and modifications are inherited, their evolutionary paths diverge. . This . - based on whole genome data. Johanne Ahrenfeldt . Research Assistant. Overview. What is Phylogeny and what can it be used for. S. ingle . N. ucleotide . P. olymorphism (SNP) methods. - . snpTree. . Phylogeny. The evolutionary history of a species or group of species. . Convergent Evolution. A process in which species from different evolutionary branches may come to resemble each other if they live in similar environments and natural selection favored similar adaptions.. Molluscan Phylogeny 1307 Table 1 Previous Results on Molluscan Phylogeny on the Basis of Molecular Data NUMBER OF SEQUENCES AUTHOR(S) GENE OR PROTEIN Other Mol- Meta- lusca zoa TREE CONSTRUCTION METHO There are three formal periods of early trilobite development:. Protaspid. : . larval . form . comprised . of the beginnings of indistinguishable . cephalon . and . pygidium. Then, a . transverse furrow appeared between the cephalon and pygidium (i.e., head and tail. By: McKenna Holman. Condit- Grade 5. Information on Trilobites. :. Name Means: . "Three lobes" . Type: . Pre-dinosaur sea creatures. Lived When: . Cambrian-Permian (540-248 million years ago). Number of Segements: . The so called Cambrian Explosion begins at the base of the Paleozoic Era, some 540 million years ago. Fossil Record suggests:. The Cambrian Explosion likely realized a 10-fold increase in evolutionary adaptation . www.trilobites.us. . Teaching Tools. Cambrian. Lower. . Middle Upper. Ordovician. Lower Middle Upper. Silurian. Ediacaran. Devonian. Carboniferous. Permian. Redlichiida. Olenellena. “Inferring Phylogenies” . Joseph Felsenstein. Excellent reference. What is a phylogeny?. Different Representations. Cladogram - branching pattern only. Phylogram - branch lengths are estimated and drawn proportional to the amount of change along the branch. Where, How, and When. Webinar by Jayson . Kowinsky. (Fossilguy.com). 8.31.16 . Where are Fossils?. Florida?. Where are Fossils?. Kentucky?. Where are Fossils?. California?. Where are Fossils?. California?. Section 1.3. Learning Goals. We are exploring modern classification of species using phylogeny.. We are learning to use phylogenetic trees to identify common ancestors.. Modern Taxonomy. traditional classification grouped species according to morphology (body, shape, size and other structural features) . 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. Dr. Habibur Rahman. Associate Professor. J. N. College, Boko. What Is Phylogeny?. Phylogeny is the study of relationships among different groups of organisms and their evolutionary development. Phylogeny attempts to trace the evolutionary history of all life on the planet. It is based on the phylogenetic hypothesis that all living organisms share a common ancestry. The relationships among organisms are depicted in what is known as a phylogenetic tree. Relationships are determined by shared characteristics, as indicated through the comparison of genetic and anatomical similarities..