Marine Species Identification Portal: Class Enteropneusta.
The Enteropneusta is a well-defined phylum consisting of approximately ninety species of burrowing or creeping, marine, worm-like invertebrates. On the basis of morphological characters, Pterobranchia is the sister group of the three or four enteropneust families.
Phylum Hemichordata has been divided into following four classes: Class 1. Enteropneusta: 1. Commonly known as “acorn” or “tongue worms”. 2. Solitary and burrowing worm-like marine animals. 3. Body consists of proboscis, collar and trunk; collar without tentaculated arms.
In the scheme of classification, the animals kingdom is divided first into several majore animal groups called phyla.. Class 1: Enteropneusta Body large and worm-like. Gill-slits numerous. Intestine straight. Acorn or tongue worms. 3 families, 15 genera and 70 species.. If you are the original writer of this essay and no longer wish to.
Enteropneusta Name Homonyms Enteropneusta Common names Acorn Worm in English acorn worms in English. Synopsis and Classification of Living Organisms. McGraw-Hill, New York. 2 volumes. Parker, S.P. (ed). (1982). Synopsis and Classification of Living Organisms. McGraw-Hill, New York. 2 volumes.
Essay on the different classification of phylum chordate On the basis of presence of notochord and cranium (brain box) phylum chordata can be divided into two groups-Acraniata (Protochordata) and Craniata (Euchordata).
Acorn worm, also called enteropneust, any of the soft-bodied invertebrates of the class Enteropneusta, phylum Hemichordata. The front end of these animals is shaped like an acorn, hence their common name. The “acorn” consists of a muscular proboscis and a collar that may be used to burrow into soft sand or mud.
The University of Chicago Press. Books Division. Chicago Distribution Center.
Recent Literature on the Enteropneusta. 1. Systematic.- Spengel has lately given the classification of the Enteropneusta a thorough overhauling.' This accepted inperator in the knowl- edge of the group recognized at the time 31 species, 9 genera and 3 families. Since then 14 species and one genus have been added.
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The Class Enteropneusta (acorn-worms) consists of about 75 species of solitary, unsegmented worm-like invertebrates. The body is fleshy, cylindrical and divided into three parts: the muscular contractile proboscis (prosome), the collar (mesosome) and the non-muscular trunk (metasome), each with coelomic compartments. The trunk has many gill slits.
Class Enteropneusta Family Harrimaniidae Genus Saccoglossus Saccoglossus bromophenolosus Saccoglossus pusillus Saccoglossus kowalevskii Saccoglossus cambriensis Genus Harrimania Harrimania planktophilus Family Ptychoderidae Genus Balanoglossus.
Essays and Journals. Saturday, February 23, 2013. Classification of All Life Fred Allebach. CLASSIFICATION Taxonomy, Phylogeny, Cladistics, Systematics: Relations and similarities of all life. terms human garlic. Kingdom Animalia Plantae. Phylum.
Punnett R (1903) The Enteropneusta. In: Gardiner J, editor. The Fauna and Geography of the Maldive and Laccadive Archipelagos. London: Cambridge University Press. pp. 631-679. Classification kingdom Animalia phylum.
An Essay on Phylum Chordata. Published Date: 23 Mar 2015 Last Modified: 04 May 2017 Disclaimer: This essay has been written and submitted by students and is not an example of our work. Please click this link to view samples of our professional work witten by our professional essay writers.
Essay-review of Valentine’s On the Origin of Phyla.. and the other between classification and phylogeny. Valentine understands these distinctions, but he regards them very differently from the way most systematists now regard them. Taxa are groups of organisms, such as Hominidae, Enteropneusta, Chordata.
Classification in general The placing of subjects into categories Provides a system for organizing, categorizing knowledge Roots of current classification systems go back to Aristotles classical theory of categories.. Juvenile works 541.142 Handbooks, tables, formulas, etc. 541.145 Addresses, essays,. Enteropneusta. Pterobranchia.