Fossils B/C

[azuritemalachite]

Order:
Informally known as:
Habitat (choose 1):
a) freshwater b) marine c) both

[GoofyFoofer]

Order:
Informally known as:
Habitat (choose 1):
a) freshwater b) marine c) both

answer (Click to Show Hidden Text)

Order: Eurypterida
Informally known as: "Sea Scorpions"
Habitat: c) both

[azuritemalachite]

Order:
Informally known as:
Habitat (choose 1):
a) freshwater b) marine c) both

answer (Click to Show Hidden Text)

Order: Eurypterida
Informally known as: "Sea Scorpions"
Habitat: c) both

Correct!

[GoofyFoofer]

Ok.

identify order, extinction in which they died out, and composition of shells (Click to Show Hidden Text)

[img]http://www.kgs.ku.edu/Extension/fossils/jpegs/fus_1.jpg[/img]

[boomvroomshroom]

Answer: (Click to Show Hidden Text)

Order: Fusulinida
Extinction in which they died out (? don't understand this question), but they died out in the Great Permian Extinction
Shell composition: Calcite (CaCO3)

[boomvroomshroom]

Okay, question:

List one of the differences between Archaeopteryx and modern birds.

[Magikarpmaster629]

Answer (Click to Show Hidden Text)

Archaeopteryx has a skeleton very similar to reptiles, rather than birds. However, it has a few special bones that only birds have, making it an early bird. (pun somewhat intended)

[boomvroomshroom]

Answer (Click to Show Hidden Text)

Archaeopteryx has a skeleton very similar to reptiles, rather than birds. However, it has a few special bones that only birds have, making it an early bird. (pun somewhat intended)

Correct.

[Magikarpmaster629]

Ok, describe the difference between articulate and inarticulate brachiopods.

[boomvroomshroom]

[quote="Magikarpmaster629"]Ok, describe the difference between articulate and inarticulate brachiopods.[/quote] (Click to Show Hidden Text)

- Articulate: toothed hinges, simple open/close muscles
- Inarticulate: untoothed hinges, complex alignment muscles