Phylum Hemichordata Hemichordate Larvae Hemichordate larvae are very similar to echinoderm larvae Class Enteropneusta Acorn Worms Class Pterobranchia Class ...
Which is larval, which is mature? Chordata. Urochordata. Tunicate. A) mature, B) larval. A. B. Dorsal nerve cord. notochord. Pharynx with gill slits. Phylum? ...
Chapter 34 Phylum Hemichordata- Acorn Worms Have three body regions: proboscis, collar, and trunk Have both a ventral and dorsal nerve cord anterior portion of dorsal ...
Most similar extant group to graptolites. All are sessile, benthic, colonial, filter feeders. ... Bushy, benthic, sessile (Dictyonmena = epiplanktonic? ...
Cambrian to Early Carboniferous. Dominant planktonic animal in Paleozoic ... Cambrian to Early Carboniferous, but never a major part of fauna. Planktonic larvae ...
Class Echinoidea sea urchin, sand dollar, sea biscuit. Class Holothuroidea sa cucumber ... Sea biscuit. Sea urchins, sand dollars. Spherical or disk shaped ...
Origin and Diversification of the Vertebrates Vertebrate Characteristics Origin and Diversification of Vertebrates Echinoderms Hemichordata (Acorn Worms) Urochordata ...
Sea squirts or tunicates. Larvae show the characteristics of chordates ... Tunicate Larva. Adult tunicates. Subphylum Cephalochordata. Lancelets (Amphioxus) ...
How do these taxa relate? How do these embryological features relate to Deuterostomes and Protostomes? Basal Deuterostomes Haeckel 1874, proposed phylum ...
PECES I PRIMEROS CORDADOS sensu Romer, 1986 sensu Benton, 1995 Agnatha Elasmobranchio morphi Osteichthyes Agnatha Placodermi Chondrychthyes Osteichthyes Rasgos de ...
Classification General Features. Basic Unit of Classification = Species. Biological Species Concept = a group of similar-looking individuals capable of ...
muscular locomotory postanal tail at some point in life history ... tadpole stage in life history of all taxa. dioecious or hermaphroditic. Phylum Chordata ...
... notochord Central part of nervous system A hollow tube made up of neurons Extends entire length of amphioxus and jawless fishes Always dorsal to notochord ...
The pharynx is housed inside an atrium. Pharyngeal basket is ... metamorphosis. Subphylum Urochordata. Solitary tunicates. colonial tunicates. 1500 species ...
... Class Ophiuroidea Class Echinoidea Class Holothuroidea Class Crinoidea Plus two fossil classes Sea stars Brittle stars Sea urchins Sea cucumbers Sea lillies ...
Title: Introducci n a la Zoolog a de Vertebrados Author: 05248 Last modified by: 05248 Created Date: 3/20/2004 12:09:00 AM Document presentation format
Phylum Chaetognatha- arrow worms (resemble tiny, planktonic fish) More closely related to ... acorn worms. Not related to true worms. Stomochord-- notochord ...
Three major protostomous eucoelomate phyla Nine minor phyla to consider Problematic Phyla Mixture of characters Where to put them Did segmentation evolve once or many ...
Phylum Cnidaria General Characteristics They are radially symmetrical; ... Ancylostoma ( Hook worm) Annilida : Annullus: little ring Triploblastic, ...
Radial, indeterminate cleavage exhibited by early embryo. Coelom forms by enterocoely ... Superficial radial body form (which is secondarily derived from ...
Phylum Mollusca. Phylum Arthropoda. Lab 2 Review. 5 How ... Mollusca. Lab 2 Review. 6 Which of the following features is common. to all of the organisms shown? ...
General Zoology Unit Five Respiration in Fish Respiration in Fish Vertebrate Thermoregulation Ectothermic obtaining body heat from the environment Poikilothermic ...
ANATOMI PERBANDINGAN HEWAN VERTEBRATA ANATOMI PERBANDINGAN HEWAN VERTEBRATA Mempelajari susunan tubuh hewan vertebrata Membandingkan susunan organ tubuh antar kelas ...
Phylogeny A phylogenetic tree is another way of representing evolutionary relationships. Branches represent real lineages that occurred in the evolutionary past.
Cartilaginous fish (Class: Chondrichthyes) also efficient paired fins - sharks - skates, rays - ratfish. II. Animal Diversity. 3. Vertebrata. c. Jawed Fishes ...
Lizards and snakes dominate! Phylum Chordata. Subphylum ... None today due to Mr. Mattioli coming in to talk about AP exam. Announcements/HW: HW tonight: ...
Hurdia from the Burgess Shale. Hurdia. Amongst the most primitive and oldest known of true arthropods. ... Survived until Early Permian (about 280 million years ago) ...
Filo Moluscos N mero de especies Caracteres Generales del Filo Moluscos Caracteres Generales del Filo Moluscos Clasificaci n del Filo Moluscos Clase Caudofoveados.
from: Cameron, CB (2002) The Anatomy, Life Habits, and Later Development ... tadpole larva (in most), notochord resorbed at metamorphosis (in most), DNA evidence ...
Vertebrate Biology Lecture Notes The Phylum Chordata Vertebrates belong to the Phylum Chordata - these are animals that, at one stage or another of their life ...