PALABRAS DEL INGLÉS RELACIONADAS CON «TETRAXON»
tetraxon
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spicule
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tetrˈæksɒn
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ˈtraksän
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10 LIBROS DEL INGLÉS RELACIONADOS CON «TETRAXON»
Descubre el uso de
tetraxon en la siguiente selección bibliográfica. Libros relacionados con
tetraxon y pequeños extractos de los mismos para contextualizar su uso en la literatura.
Strictly speaking, the- tetraxon type itself could be considered as a modification of
the polyaxon, and has probably been derived from it, but for practical purposes it
is best to consider the two types separately. (o) Tetraxon Type. — The simplest ...
Sir Edwin Ray Lankester, 1900
2
Descriptive Catalogue of the Sponges in the Australian ...
A cortex is often developed. The ciliated chambers are spherical and small. The
ground-substance is granular. A supporting skeleton is nearly always developed*
; it is composed of tetraxon or monaxon siliceous spicules ; the latter are monact,
...
Australian Museum, Robert Lendenfeld, 1888
3
Materials for a Monograph of the Ascons. -: On the origin ...
In spite of their position at the nodes of a framework, where, as Dreyer assumes,
they would be subject to " vesicular tension," no granules have been recorded, to
my knowledge, which show any approach to the supposed primitive tetraxon ...
Edward Alfred Minchin, 1898
4
Modern Text Book of Zoology: Invertebrates
10, 10-MicroscIcres. 1-Monactinal monaxon. 2-Diactinal monaxon 3 -Curved
monaxon. 4-Triaenes. 5 & 6-Tetraxon calthrops. 7-Triradiate. 8 -Monaxon with
ends hooked (anphidisc). 9-Hexactinal triaxon. 10 & 11-Potyaxons. 12-Spongin
fibres.
5
Pamphlets on Biology: Kofoid collection
An altogether different line of evolution from the primitive tetraxon archetype
appears to have given rise to the typical oxeote spicules (figs. 9, 10) of the
monaxonellid division of the Tetraxonida. Here two of the four rays of the primitive
tetraxon ...
6
Quarterly Journal of Microscopical Science
With reference to the latter, the inability of the theory to account for the well-
ascertained fact that all spicules arise from approximately spherical concretions,
and that comparatively very few ever assume the tetraxon form, releases us from
the ...
7
Invertebrates: Protozoa to Echinodermata
Tetraxon. It consists of four rays radiating from a common point (Fig. 9.6 C). By
loss of rays they may become three, two or one rayed. c. Triaxon. It consists of
three axes which cross at right angles and produce six rays. Hexactinal spicule
arises ...
8
A Dictionary for Invertebrate Zoology:
[L. citrus, citron-tree] Lemon-yellow in color. citron shaped Having the form of a
large lemon. cladi, clads n.pl. [Gr. klados, branch] (PORIF) The three shorter rays
of a tetraxon spicule, that may be forked or branched at their free ends. cladism n.
9
Petroleum Geoscience: From Sedimentary Environments to Rock ...
(e) Various kinds of tetraxon spicules. (f) Part of a sponge skeleton built up of
tetraxon spicules (modified from Rasmussen 1969) spicule extinguishes as a
single entity in polarised light. Hyalospongiea (siliceous sponges) have spicules
of ...
10
Advances in Sponge Science: Phylogeny, Systematics, Ecology
The palaeontological information is too scarce to help answer this fundamental
question: Which is ancestral, the tetraxon spicule or the monaxon spicule? The
most accepted hypothesis is that the tetraxon is the ancestral state (Schulze,
1880; ...
NOTICIAS EN LAS QUE SE INCLUYE EL TÉRMINO «TETRAXON»
Conoce de qué se habla en los medios de comunicación nacionales e internacionales y cómo se emplea el término
tetraxon en el contexto de las siguientes noticias.
Reach for the stars
The Tetraxon Balancer program invites visitors to sit in the middle of three rings which randomly rotate to mimic the conditions of astronauts during space flight. «Global Times, Dic 13»
