Pycnogonids
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Pycnogonids

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Published by Hutchinson in [London] .
Written in English

Subjects:

  • Pycnogonida.

Book details:

Edition Notes

Bibliography: p. [133]-137.

Statement[by] P. E. King.
Classifications
LC ClassificationsQL447 .K56
The Physical Object
Pagination144 p.
Number of Pages144
ID Numbers
Open LibraryOL5471264M
ISBN 100091164605
LC Control Number73174384

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Pycnogonids vaguely resemble spiders, with small bodies and relatively long, hinged legs. Unique characteristics include an unusual proboscis, which varies in size and shape among species, but amounts to a chamber with an opening at the distal end (the true .   Science 12 Apr Vol. , Issue , pp. DOI: /scienceCited by: 1. Pycnogonids, or "sea spiders", are among the most bizarre-looking arthropods. Another name sometimes used for them, Pantopoda, means "all legs" and describes them perfectly. Another name sometimes used for them, Pantopoda, means "all legs" and describes them perfectly.   What are pycnogonids? Also known as ‘sea spiders’, they are bizarre-looking marine arthropods whose name means ‘dense-knees’. Most species have very long, thin legs and extremely slender bodies — essentially a combination of slightly distended leg-bearing segments (Figure 1). Many species look as though they are just a tangle of cream or yellowish-brown appendages, hence their old.

1a: Legs thick, shorter than (or at least not conspicuously longer than) the combined length of the proboscis and trunk; outline of the animal as a whole oval or elliptical; without chelicerae or pedipalps; without conspicuous spiny projections: 2: 1b: Legs usually much longer than the combined length of the proboscis and trunk (pycnogonids of this type are usually awkward and gangly, but. The pycnogonids were first discovered from Antarctic waters by James Eight (Eight ), since then these organisms are often referred as a characteristic component of Antarctic habitat. Pycnogonum is a genus of sea spiders in the family Pycnogonidae.. Characteristics. Members of the genus Pycnogonum have squarish bodies with a tough integument and a few hairs. The cephalon (the anterior end of the body which is fused with the first segment of the trunk) has a long smooth proboscis and a low tubercle on which the eyes are set. There are no chelicerae or palps and these sea Class: Pycnogonida. Get this from a library! Pycnogonids. [P E King] COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff.

Pycnogonids (sea spiders) are marine arthropods, which are most plausibly placed within chelicerates, as sister group to all other taxa. This chapter gives a brief overview of pycnogonid morphology before summarizing the available information on nervous system architecture and neural development. The brain is a bipartite composite ganglion that encompasses the protocerebral region and the Author: Georg Brenneis.   Contribution to the Embryology and Phylogeny of the Pycnogonids .. [Morgan, Thomas Hunt] on *FREE* shipping on qualifying offers. Contribution to the Embryology and Phylogeny of the Pycnogonids : Paperback. Pycnogonids, or "sea spiders," are among the strangest creatures on Earth. Giant pycnogonids are featured in the science-fiction novel Spider Legs, cowritten with Piers Anthony. In the novel, giant sea spiders terrorize people on the Newfoundland shores. Additional Physical Format: Online version: King, P.E. (Philip Ernest). Pycnogonids. [London] Hutchinson [] (OCoLC) Document Type: Book.