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Re: Fossils B/C

Posted: May 6th, 2015, 3:33 pm
by UTF-8 U+6211 U+662F
[img]http://www.lakeneosho.org/images/comp4.jpg[/img]

Re: Fossils B/C

Posted: May 6th, 2015, 3:38 pm
by boomvroomshroom
1. Brachiopoda > Articulata > Rhynchonellata > Athyridida > Athyrididae > Composita
2. Naturally smooth shell, plus weathering polishes the surface (sand and water)
3. Devonian - Permian
4. Marine
5. Benthic sessile filter feeder

Re: Fossils B/C

Posted: May 6th, 2015, 3:46 pm
by UTF-8 U+6211 U+662F
1. Brachiopoda > Articulata > Rhynchonellata > Athyridida > Athyrididae > Composita
2. Naturally smooth shell, plus weathering polishes the surface (sand and water)
3. Devonian - Permian
4. Marine
5. Benthic sessile filter feeder
Correct, except for number two,
This way, the shell can handle more turbulent currents.

Re: Fossils B/C

Posted: May 6th, 2015, 3:59 pm
by aditi
Yes, that makes sense.

Re: Fossils B/C

Posted: May 6th, 2015, 5:01 pm
by boomvroomshroom
Cool.

Question:
What is the difference between siderite and pyrophyllite?

Re: Fossils B/C

Posted: May 6th, 2015, 6:51 pm
by varunscs11
Well not sure what your looking for but the specific gravities, hardness, color, chemical formula, etc

Re: Fossils B/C

Posted: May 6th, 2015, 7:00 pm
by azuritemalachite
Cool.

Question:
What is the difference between siderite and pyrophyllite?
I would say the main difference is the composition like how one is made of carbonate and other is a silicate, but there are many other things like distinct differences in the crystal shape and color and texture/hardness.

Re: Fossils B/C

Posted: May 6th, 2015, 7:16 pm
by boomvroomshroom
lol sorry bad question. Anything would have worked. azuritemalachite, it's your turn.

Re: Fossils B/C

Posted: May 9th, 2015, 4:03 pm
by varunscs11
Next question! Here's an ez one. Organize these supercontinents by earliest to latest. Ur, Kenorland, Vaalbara, Pangea, and Pannotia

Re: Fossils B/C

Posted: May 14th, 2015, 1:36 pm
by UTF-8 U+6211 U+662F
Next question! Here's an ez one. Organize these supercontinents by earliest to latest. Ur, Kenorland, Vaalbara, Pangea, and Pannotia
Vaalbara, Ur, Kenorland, Pannotia, Pangaea