# What is--and isn't--a dinosaur?

**URL:** <https://boards.straightdope.com/t/what-is-and-isnt-a-dinosaur/828027>\
**Category:** Factual Questions\
**Created:** [January 19, 2019, 4:00am UTC](https://boards.straightdope.com/t/what-is-and-isnt-a-dinosaur/828027 "2019-01-19T04:00:42Z")\
**Posts on this page:** 2\
**Page:** 5

<div class="post-metadata">

**Author:** ![MrDibble](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mrdibble/32/114_2.png) [@MrDibble](https://boards.straightdope.com/u/MrDibble)\
**Post date:** [January 30, 2019, 8:57pm UTC](https://boards.straightdope.com/t/what-is-and-isnt-a-dinosaur/828027/81 "2019-01-30T20:57:01Z")

</div>

> [@Chronos](#):
>
> On thinking about it, I can only come up with nine major phyla (of which I’d call seven “worms”).

Eh? Of your nine, I’d only consider the red ones “worms”

1: Sponges  
2: Coelenterates (better listed as Cnidaria and Ctenophora separately )  
3: Flatworms  
4: Roundworms  
5: Segmented worms  
6: Arthropods  
7: Echinoderms  
8: Molluscs  
9: Chordates

Which other phyla do you consider to be worms?  
FYI, my working definition of “worm” here is “a mostly naked-skinned animal much longer than it is high or wide, with no limbs to speak of”. Other phyla might have individual species - even just particular instars - that meet that definition: _Teredo_, or sea cucumbers, or maggots

---

<div class="post-metadata">

**Author:** ![Bosda\_Di\_Chi\_of\_Tricor](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/bosda_di_chi_of_tricor/32/16845_2.png) [@Bosda\_Di\_Chi\_of\_Tricor](https://boards.straightdope.com/u/Bosda_Di_Chi_of_Tricor)\
**Post date:** [January 31, 2019, 12:07am UTC](https://boards.straightdope.com/t/what-is-and-isnt-a-dinosaur/828027/82 "2019-01-31T00:07:37Z")

</div>

I am a Dinosaur.  
I am also Spartacus.  
And Batman.

[Previous page](https://boards.straightdope.com/t/what-is-and-isnt-a-dinosaur/828027.md?page=4)