Search found 61 matches

by dchen22
April 4th, 2019, 6:43 pm
Forum: 2019 Question Marathons
Topic: Fossils B/C
Replies: 247
Views: 30974

Re: Fossils B/C

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 ar...
by dchen22
April 2nd, 2019, 7:03 pm
Forum: 2019 Question Marathons
Topic: Fossils B/C
Replies: 247
Views: 30974

Re: Fossils B/C

wec01 wrote: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.
by dchen22
March 26th, 2019, 1:20 pm
Forum: General Competition
Topic: Science Olympiad Events 2019-2020
Replies: 557
Views: 118709

Re: Science Olympiad Events 2019-2020

How much will the ornithology list be expected to change from this year's trial list to next years list? I'd estimate ~10% changes, that's usually the typical amount. Here’s Ornithology’s list this year as a trial event. https://www.soinc.org/sites/default/files/uploaded_files/Ornithology_Trial_Eve...
by dchen22
March 26th, 2019, 1:14 pm
Forum: 2019 Question Marathons
Topic: Fossils B/C
Replies: 247
Views: 30974

Re: Fossils B/C

Images|A. [img]https://assets.catawiki.nl/assets/2018/10/18/f/9/f/f9fd70fa-8f59-49e0-a9ae-f83aad3179a7.jpg[/img] B. [img]https://upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Burmirhynchia_jirbaensis_Callovian_Israel.jpg/1200px-Burmirhynchia_jirbaensis_Callovian_Israel.jpg[/img] 1. Identify the...
by dchen22
March 26th, 2019, 7:12 am
Forum: 2019 Question Marathons
Topic: Fossils B/C
Replies: 247
Views: 30974

Re: Fossils B/C

Images|A. [img]https://assets.catawiki.nl/assets/2018/10/18/f/9/f/f9fd70fa-8f59-49e0-a9ae-f83aad3179a7.jpg[/img] B. [img]https://upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Burmirhynchia_jirbaensis_Callovian_Israel.jpg/1200px-Burmirhynchia_jirbaensis_Callovian_Israel.jpg[/img] 1. Identify the...
by dchen22
March 25th, 2019, 6:03 pm
Forum: 2019 Question Marathons
Topic: Fossils B/C
Replies: 247
Views: 30974

Re: Fossils B/C

1. Why are crinoids rarely found as complete fossils? 2.a. What are two major differences between most modern crinoids and most fossil crinoids? 2.b. When and why did this shift happen? 3. What are two morphological commonalities between crinoids and blastoids? 1. The loosely bound ossicles fall ap...
by dchen22
March 22nd, 2019, 5:41 pm
Forum: 2019 Question Marathons
Topic: Fossils B/C
Replies: 247
Views: 30974

Re: Fossils B/C

Images|A.[img]http://www.thefossilforum.com/uploads/monthly_05_2010/post-2572-12735833042697.jpg[/img] B.[img]https://www.sciencephoto.com/image/692092/800wm[/img] C.[img]https://0.allegroimg.com/s512/03e944/8f99890d40faacede9c9e08cecf0[/img] 1. Identify specimens A, B, and C. 2. What part of speci...
by dchen22
March 22nd, 2019, 12:32 pm
Forum: 2019 Question Marathons
Topic: Fossils B/C
Replies: 247
Views: 30974

Re: Fossils B/C

Images|A.[img]http://www.thefossilforum.com/uploads/monthly_05_2010/post-2572-12735833042697.jpg[/img] B.[img]https://www.sciencephoto.com/image/692092/800wm[/img] C.[img]https://0.allegroimg.com/s512/03e944/8f99890d40faacede9c9e08cecf0[/img] 1. Identify specimens A, B, and C. 2. What part of speci...
by dchen22
March 21st, 2019, 3:33 am
Forum: 2019 Question Marathons
Topic: Fossils B/C
Replies: 247
Views: 30974

Re: Fossils B/C

New Question! 1. Explain Niles Eldredge's theory of Punctuated Equilibrium. 2. Explain the difference between a Deuterostome and a Protostome. 3. Explain how the Petoskey Stone was named. 4. What is the origin of Rafinesquina's name? (Explain it's Genus name, and its "cursed" nickname) 8-) 1. Punct...
by dchen22
March 18th, 2019, 5:43 pm
Forum: 2019 Question Marathons
Topic: Fossils B/C
Replies: 247
Views: 30974

Re: Fossils B/C

Question|[quote="wec01"][quote="dchen22"]A. [img]https://thumbs-prod.si-cdn.com/iqm0pnNp16NCaxJz0yBkLIV7wKg=/800x600/filters:no_upscale():focal(385x90:386x91)/https://public-media.si-cdn.com/filer/8a/bd/8abd9fe7-b2f5-4cd0-93bd-a58d8d89b9ed/32520806205_325499e4df_b.jpg[/img] B. [img]http://www.fossi...

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