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Re: Fossils

Posted: April 21st, 2009, 7:54 am
by GGuy5
oh joy wrote:what are the distinct differences between coelophysis and velociraptors???
umm........ well this one shouldn't be that hard, v-raptor has huge claws and ceolophysis is the size of a chicken

Re: Fossils

Posted: April 22nd, 2009, 9:54 am
by oh joy
yeah, but u cant really tell size from just pictures. ;)

Re: Fossils

Posted: April 22nd, 2009, 10:28 am
by GGuy5
you can too tell if they have a huge claw on their foot

Re: Fossils

Posted: April 22nd, 2009, 12:53 pm
by soobsession
hmm...

Coelophysis

Image

Velociraptors


Image

those were taken from the same website. a velociraptor clearly has bigger claws. of course on the test, you might not have a full picture of the whole thing...or you might have a skeleton...or you might have a freaky question with a bone fragment in it....but if you have a skeleton, you should still be able to see the difference. :)

Re: Fossils

Posted: April 22nd, 2009, 1:12 pm
by oh joy
yeah, i guess. ;)

Oh, also, what are the differences between baculite and belemnite? They both have suture patterns!

Re: Fossils

Posted: April 22nd, 2009, 1:19 pm
by blufoster6
oh joy wrote:yeah, i guess. ;)

Oh, also, what are the differences between baculite and belemnite? They both have suture patterns!

Actually, belemnites don't really have suture patterns.

Re: Fossils

Posted: April 22nd, 2009, 1:25 pm
by soobsession
yeah, but i doubt they have the same ones...i remember one of them (i forget....states was a while ago, i think...baculites :roll: ) i have a really complicated lacy suture pattern. i didnt get much information about belemnites, but i really doubt they have the same sulture pattern (i dont have my field guide with me so i can't find a picture...wait, im online....geez

ok...

Baculite

Image

awesome pic!!! (i like the sultures)
Belemnite

gah!!! cant find a decent picture...

wait...belemnites dont have sultures ... :roll: :| ...no wonder...

Re: Fossils

Posted: April 22nd, 2009, 1:31 pm
by oh joy
WAIT! they dont???
how about ortheoceras???

Re: Fossils

Posted: April 22nd, 2009, 1:46 pm
by soobsession
nopes, belemnites dont...

orthoceras? arent those the ones that like every other picture i see of them is...shiny (is that bad grammar? :| ) no seriously...i mean...
Image

Image

Image

theyre shiny! :!: ;) okay...back on topic...they have straightish lines on them, which im assuming are sultures...very simple sultures... :)

Re: Fossils

Posted: April 22nd, 2009, 1:48 pm
by gneissisnice
Its fairly simple.
Baculites is an ammonite, while orthoceras is a nautilus.
This means that bacilutes will have very complex suture structures, kinda shaped like flowers (at least I think so). Orthoceras is different, its sutures are just straight lines.