AwersomeUser wrote:Since no one is asking any question I will ask some questions.
1. Identify this:
2. Label this: (a and b)
3. What is its temperal range?
4. It is anatomically intermediate between _________________ and those that were fully capable of coming onto land.
Can number 2 be part of the test? I think so right?
Yes, number 2 is allowed.
Re: Fossils B/C
Posted: March 12th, 2019, 7:13 pm
by wec01
AwersomeUser wrote:Since no one is asking any question I will ask some questions.
1. Identify this:
2. Label this: (a and b)
3. What is its temperal range?
4. It is anatomically intermediate between _________________ and those that were fully capable of coming onto land.
Can number 2 be part of the test? I think so right?
1. Acanthostega
2. (Had to look this up) a: bones supporting gills; b: tetrapod limb
3. Late Devonian
4. Lobe-finned fish or early tetrapods?
Re: Fossils B/C
Posted: March 13th, 2019, 9:40 am
by AwersomeUser
wec01 wrote:
AwersomeUser wrote:Since no one is asking any question I will ask some questions.
1. Identify this:
2. Label this: (a and b)
3. What is its temperal range?
4. It is anatomically intermediate between _________________ and those that were fully capable of coming onto land.
Can number 2 be part of the test? I think so right?
1. Acanthostega
2. (Had to look this up) a: bones supporting gills; b: tetrapod limb
3. Late Devonian
4. Lobe-finned fish or early tetrapods?
1. :)
2. :)
3. :)
4. It’s Lobe-finned fish
Re: Fossils B/C
Posted: March 13th, 2019, 3:21 pm
by wec01
Give the Lagerstätten (from the rules) in which each of the following are found:
1. Cryptolithus
2. Ginkgo
3. Elrathia
4. Coelophysis
5. Archaeopteryx
6. Lepidodendron
Some specimens that aren't on the list so probably aren't be legal but ¯\_(ツ)_/¯; answer if you want:
7. Confuciusornis
8. Anomalocaris
9. Tullimonstrum
10. Knightia
Re: Fossils B/C
Posted: March 14th, 2019, 7:40 am
by dchen22
1. Beecher’s Trilobite Bed
2. Yixian Formation ??
3. Burgess Shale
4. Ghost Ranch
5. Solhnofen
6. Mason Creek
7. Yixian Formation
8. Burgess Shale
9. Mason Creek
10. Green River Formation
Some of the “illegal” questions were actually on the MIT Test as bonus questions.
Re: Fossils B/C
Posted: March 14th, 2019, 1:15 pm
by wec01
dchen22 wrote:
1. Beecher’s Trilobite Bed
2. Yixian Formation ??
3. Burgess Shale
4. Ghost Ranch
5. Solhnofen
6. Mason Creek
7. Yixian Formation
8. Burgess Shale
9. Mason Creek
10. Green River Formation
Some of the “illegal” questions were actually on the MIT Test as bonus questions.
Yup, your turn
Re: Fossils B/C
Posted: March 14th, 2019, 2:19 pm
by dchen22
A.
B.
1. Identify specimens A and B.
2. What is an ambulacrum?
3. What is a pedicellaria?
4. List 5 differences between the taxa of specimens A and B.
Re: Fossils B/C
Posted: March 14th, 2019, 5:01 pm
by wec01
dchen22 wrote:A.
B.
1. Identify specimens A and B.
2. What is an ambulacrum?
3. What is a pedicellaria?
4. List 5 differences between the taxa of specimens A and B.
1. A: Asteroidea; B: Ophiuroidea
2. Ossicles which line the arms of the starfish and brittle star
3. Pincer/forcep-like structures which shut when touched
4. B has a covered ambulacral groove; The central disc is delineated from the arms in B; B's podium are reduced to tactile sensors; B moves by wiggling its arms (as opposed to using tube feet); The central disc in B is nearly circular
Re: Fossils B/C
Posted: March 14th, 2019, 5:43 pm
by dchen22
Correct, your turn!
2. For general echinoderms, ambulacra are ossicle columns/sections of the echinoderm associated with food intake.
3. I would add that pedicellariae are modified spines.
4. Other differences include B doesn’t have ampullae, B doesn’t have a separate anus, and B is mostly deep water while A is mostly found in the littoral zone.
Re: Fossils B/C
Posted: March 15th, 2019, 8:44 am
by wec01
List one specimen from the list that went extinct during each of the 5 major mass extinctions.
