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Slits

slit-shell

(Science: zoology) Any species of Pleurotomaria, a genus of beautiful, pearly, spiral gastropod shells having a deep slit in the outer lip. Many fossil species are known, and a few living ones are found in deep water in tropical seas.


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Re: The Most Primitive Respiratory System

... birds and mammals are very similar and this are evidence that they evolved from a distant common ancestor. Embroyology shows that all have gill slits and tails in their embroyos like those of a fish." The ontogeny recapitulates phylogeny concept was rejected by science a long tme ago. Conceptually ...

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by JorgeLobo
Fri Apr 27, 2012 1:39 am
 
Forum: Evolution
Topic: The Most Primitive Respiratory System
Replies: 11
Views: 5921

The Most Primitive Respiratory System

... birds and mammals are very similar and this are evidence that they evolved from a distant common ancestor. Embroyology shows that all have gill slits and tails in their embroyos like those of a fish. I can use this theory to pick fish out as the animal that has the most primitive respiratory ...

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by chikis
Thu Mar 22, 2012 12:21 am
 
Forum: Evolution
Topic: The Most Primitive Respiratory System
Replies: 11
Views: 5921

Re: 5 best proofs of evolution

... because we belong to the phylum Chordata. One of the features of this phylum is that, as embryos, all these life forms have gill slits, tails, and specific anatomical structures involving the spine. For humans (and other non-fish) the gill slits reform into the bones of the ear ...

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by JackBean
Wed Sep 22, 2010 11:39 am
 
Forum: Evolution
Topic: 5 best proofs of evolution
Replies: 170
Views: 240153

Re: 5 best proofs of evolution

... because we belong to the phylum Chordata. One of the features of this phylum is that, as embryos, all these life forms have gill slits, tails, and specific anatomical structures involving the spine. For humans (and other non-fish) the gill slits reform into the bones of the ear ...

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by florinmoc
Wed Sep 08, 2010 8:36 am
 
Forum: Evolution
Topic: 5 best proofs of evolution
Replies: 170
Views: 240153

Re: Marsupials as Larvae

But how have inner parasites selected mammals with specific slits (whales and dolphins- too, have parasitic fishes in their slits), in order to live and feed there? How have they erased parent species? It is known placental mammals feed through their navel ...

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by enarees
Fri Jul 16, 2010 3:59 pm
 
Forum: Evolution
Topic: Marsupials as Larvae
Replies: 2
Views: 3402
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