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Dogfish

Dogfish

(Science: zoology)

1. A small shark, of many species, of the genera Mustelus, Scyllium, Spinax, etc.

The European spotted dogfishes (Scyllium catudus, and s. Canicula) are very abundant; the American smooth, or blue dogfish is Mustelus canis; the common picked, or horned dogfish (Squalus acanthias) abundant on both sides of the atlantic.

2. The bowfin (amia calva). See bowfin.

3. The burbot of lake Erie.


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constrcuting a phylogenetic tree

How should I draw a phylogenetic tree for the following creatures: Dogfish shark, rat, snake, frog and an earthtworm. what would be the main characteristcs combing the the five of them? which would be the closest? Thanks!

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by handbanana
Mon Oct 15, 2007 5:50 pm
 
Forum: Evolution
Topic: constrcuting a phylogenetic tree
Replies: 3
Views: 984

Help finding sources on Evolution!

We dissected a frog, dogfish shark, snake, rat and an earthworm and we're supposed to write a report on how the nervous and ciruclatary systems have evolved in these organisms and weather their evolution is consiered a "sucess ...

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by handbanana
Fri Oct 12, 2007 8:14 pm
 
Forum: Evolution
Topic: Help finding sources on Evolution!
Replies: 1
Views: 801

Genus Help

I have a question. What qualities must an animal, like the dogfish shark, possess to be in the genus squalus?

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by afwhit01
Fri Dec 09, 2005 12:00 am
 
Forum: General Discussion
Topic: Genus Help
Replies: 1
Views: 612


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