Fossils B/C

[hmmm]

oof, I can't read

Questions (Click to Show Hidden Text)

1.What is the genus of the largest known trilobite?
2.Which ornithschian on the list is controversial and why?
3.Name 3 transition fossils on the list and between which two groups of animals they are(sorry for the bad wording)

Answers (Click to Show Hidden Text)

1. Isotelus
2. Dracorex, some think they are simply young Pachycephalosaurus
3. Archaeopteryx (dinosaurs to birds), Tiktaalik (fish to tetrapods), Messohippus? (hyracotherium to modern horses)

Yep your turn

[wec01]

Which specimen from the list is each of the following most closely related to?:
1. Cryptolithus
2. Eryops
3. Basilosaurus
4. Echinoidea

[dchen22]

Which specimen from the list is each of the following most closely related to?:
1. Cryptolithus
2. Eryops
3. Basilosaurus
4. Echinoidea

Some of these have multiple answers. For example Echinoidea is equally closely related to Asteroidea and Ophiuroidea.

[wec01]

Which specimen from the list is each of the following most closely related to?:
1. Cryptolithus
2. Eryops
3. Basilosaurus
4. Echinoidea

Some of these have multiple answers. For example Echinoidea is equally closely related to Asteroidea and Ophiuroidea.

Some trees display it that way, but there are also some that show Asteroidea diverging earlier than Ophiuroidea with Echinoidea last, so I guess that one is somewhat open to debate. I think the others should be just one answer, but let me know if any of the others are like that.

[dchen22]

Which specimen from the list is each of the following most closely related to?:
1. Cryptolithus
2. Eryops
3. Basilosaurus
4. Echinoidea

Some of these have multiple answers. For example Echinoidea is equally closely related to Asteroidea and Ophiuroidea.

Some trees display it that way, but there are also some that show Asteroidea diverging earlier than Ophiuroidea with Echinoidea last, so I guess that one is somewhat open to debate. I think the others should be just one answer, but let me know if any of the others are like that.

For number 1, Cryptolithus is most closely related to Isotelus but I can’t do any of the rest because I haven’t studied vertebrates. I’ll leave that to someone else.

[wec01]

Some of these have multiple answers. For example Echinoidea is equally closely related to Asteroidea and Ophiuroidea.

Some trees display it that way, but there are also some that show Asteroidea diverging earlier than Ophiuroidea with Echinoidea last, so I guess that one is somewhat open to debate. I think the others should be just one answer, but let me know if any of the others are like that.

For number 1, Cryptolithus is most closely related to Isotelus but I can’t do any of the rest because I haven’t studied vertebrates. I’ll leave that to someone else.

Yep, I'm just gonna list the other ones since no one else seems to be answering:
For Eryops it would be Acanthostega and for Basilosaurus it would be Mesohippus Your turn

[dchen22]

Images (Click to Show Hidden Text)

A.[img]http://core.ecu.edu/geology/harper/Sedimentary/S19.gif[/img]
B.[img]https://www.naturepl.com/cache/pcache2/01448068.jpg[/img]
C.[img]https://farm9.staticflickr.com/8252/8513579676_3e4cd6a5a0_b.jpg[/img]

1. Identify specimens A, B, and C.
2. Which specimens are clastic?
3. What is the distinctive feature about specimen A compared to specimen C?
4. What mineral comprises specimen B?
5. What is sorting? Which one of the specimens is poorly sorted?

[dxu46]

Images (Click to Show Hidden Text)

A.[img]http://core.ecu.edu/geology/harper/Sedimentary/S19.gif[/img]
B.[img]https://www.naturepl.com/cache/pcache2/01448068.jpg[/img]
C.[img]https://farm9.staticflickr.com/8252/8513579676_3e4cd6a5a0_b.jpg[/img]

1. Identify specimens A, B, and C.
2. Which specimens are clastic?
3. What is the distinctive feature about specimen A compared to specimen C?
4. What mineral comprises specimen B?
5. What is sorting? Which one of the specimens is poorly sorted?

ROCKS AND MINERALS <3 (Click to Show Hidden Text)

1. A - shale/mudstone B - coquina C - I think oolitic limestone but it't not clear whether those bumps are oolites or just crystals
2. A and B
3. A is comprised of layers, while C is more like individual grains
4. Calcite/CaCO3 (shells)
5. Sorting is the distribution of grain sizes. B

[dchen22]

Images (Click to Show Hidden Text)

A.[img]http://core.ecu.edu/geology/harper/Sedimentary/S19.gif[/img]
B.[img]https://www.naturepl.com/cache/pcache2/01448068.jpg[/img]
C.[img]https://farm9.staticflickr.com/8252/8513579676_3e4cd6a5a0_b.jpg[/img]

1. Identify specimens A, B, and C.
2. Which specimens are clastic?
3. What is the distinctive feature about specimen A compared to specimen C?
4. What mineral comprises specimen B?
5. What is sorting? Which one of the specimens is poorly sorted?

ROCKS AND MINERALS <3 (Click to Show Hidden Text)

1. A - shale/mudstone B - coquina C - I think oolitic limestone but it't not clear whether those bumps are oolites or just crystals
2. A and B
3. A is comprised of layers, while C is more like individual grains
4. Calcite/CaCO3 (shells)
5. Sorting is the distribution of grain sizes. B

Your turn!

Corrections (Click to Show Hidden Text)

1. C is siltstone
2. A and C are clastic
3. Yup, the terminology is A is varved/fissile

[dxu46]

Images (Click to Show Hidden Text)

A.[img]http://core.ecu.edu/geology/harper/Sedimentary/S19.gif[/img]
B.[img]https://www.naturepl.com/cache/pcache2/01448068.jpg[/img]
C.[img]https://farm9.staticflickr.com/8252/8513579676_3e4cd6a5a0_b.jpg[/img]

1. Identify specimens A, B, and C.
2. Which specimens are clastic?
3. What is the distinctive feature about specimen A compared to specimen C?
4. What mineral comprises specimen B?
5. What is sorting? Which one of the specimens is poorly sorted?

ROCKS AND MINERALS <3 (Click to Show Hidden Text)

1. A - shale/mudstone B - coquina C - I think oolitic limestone but it't not clear whether those bumps are oolites or just crystals
2. A and B
3. A is comprised of layers, while C is more like individual grains
4. Calcite/CaCO3 (shells)
5. Sorting is the distribution of grain sizes. B

Your turn!

Corrections (Click to Show Hidden Text)

1. C is siltstone
2. A and C are clastic
3. Yup, the terminology is A is varved/fissile

Wait (Click to Show Hidden Text)

but I thought coquina was clastic because it's composed of shells as clasts