Fossils B/C

[UTF-8 U+6211 U+662F]

1)Identify all main taxonomic ranks 2)Explain why this fossil is so smooth 3)Time Period 4)Environment 5)Modes of life (Click to Show Hidden Text)

[img]http://www.lakeneosho.org/images/comp4.jpg[/img]

[boomvroomshroom]

Answer: (Click to Show Hidden Text)

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

[UTF-8 U+6211 U+662F]

Answer: (Click to Show Hidden Text)

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,

I was looking for (Click to Show Hidden Text)

This way, the shell can handle more turbulent currents.

[aditi]

Yes, that makes sense.

[boomvroomshroom]

Cool.

Question:
What is the difference between siderite and pyrophyllite?

[varunscs11]

Well not sure what your looking for but the specific gravities, hardness, color, chemical formula, etc

[azuritemalachite]

Cool.

Question:
What is the difference between siderite and pyrophyllite?

Answer: (Click to Show Hidden Text)

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.

[boomvroomshroom]

lol sorry bad question. Anything would have worked. azuritemalachite, it's your turn.

[varunscs11]

Next question! Here's an ez one. Organize these supercontinents by earliest to latest. Ur, Kenorland, Vaalbara, Pangea, and Pannotia

[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

ANS (Click to Show Hidden Text)

Vaalbara, Ur, Kenorland, Pannotia, Pangaea