Related searches for primitive backbone
Tunicates start out life as free-swimming, tadpolelike animals with a notochord (a primitive backbone), but many, such as the sea squirts, lose the notochord and most of their nervous system
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Fossils found in the Burgess Shale of British Columbia show traces of a notochord (a rodlike primitive backbone), a significant step in the ev...
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We have the information you need about What Are Chordata. Learn more. ... These similarities are most noticable in the larvae (tadpole-like creatures with a primitive backbone, nerve cord and tail).
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Astraspis was one of only a few primitive fish species on the planet prior to Earth's first mass extinction. A lowly and seemingly insignificant lifeform in its time , ...
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Mar 18, 2011 ... This enhancement comes in two parts: The first commit adds a simple Backbone. Base class. This is a primitive base class you can use to create ...
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Mar 18, 2011 ... I added a primitive base class named Backbone.Base so that people can create create custom classes with the self-propagating extend() ...
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The notochord is like a primitive backbone, and is present at least at some stage of their development. So, while animals like humans, mammals and birds are all ...
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Definition: A notochord is often described as a primitive backbone. It is a rigid, cartilaginous rod that is present at some stage of development in all chordates.
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One of only a few fish species prior to Earth's first mass extinction 450 million years ago, Astraspis had something never before seen: a primitive backbone.
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Promissum - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Promissum
A conodont, Promissum had a primitive mouth under its eyes with mineralized teeth, which are both typical for conodonts, and also a primitive backbone. |
