Fossils B/C
- hmmm
- Member
- Posts: 141
- Joined: January 10th, 2019, 2:33 pm
- Division: C
- State: NJ
- Has thanked: 13 times
- Been thanked: 4 times
-
- Member
- Posts: 220
- Joined: February 22nd, 2019, 4:02 pm
- Division: Grad
- State: VA
- Has thanked: 0
- Been thanked: 0
Re: Fossils B/C
One big difference is the fins; coelocanths are lobe-finned and actinopterygii are ray-finnedhmmm wrote:What's the difference between coelocanthiformes and actinopterygii in ID?
This can be pretty clearly seen in the tails where coelocanths are more fleshy? I guess you could say? (not sure how you would describe it) and actinopterygii has long rays and the tail is often split.
2019 Division C Nationals Medals:
4th place Fossils
5th place Sounds of Music
2nd place Thermodynamics
4th place Fossils
5th place Sounds of Music
2nd place Thermodynamics
-
- Member
- Posts: 78
- Joined: September 18th, 2018, 3:13 pm
- Division: C
- State: IN
- Has thanked: 0
- Been thanked: 0
Re: Fossils B/C
Yeah that's how I usually identify sarcopterygii and actinopterygii. The tail in sarcopterygii (and coelacanthiformes) is typically more convex while the tail in sarcopterygii is typically concave.wec01 wrote:One big difference is the fins; coelocanths are lobe-finned and actinopterygii are ray-finnedhmmm wrote:What's the difference between coelocanthiformes and actinopterygii in ID?
This can be pretty clearly seen in the tails where coelocanths are more fleshy? I guess you could say? (not sure how you would describe it) and actinopterygii has long rays and the tail is often split.
VHS '22
2017 VU/Reg/State/Nats Rocks:10/2/3/21 Dynamic:3/2/11/46 2018 Reg/State/Nats Rocks:1/1/15 Thermo:1/6/29 Roller:3/10/20 2019 VU/Reg/State/Nats Fossils <3 :1/1/1/2 :D Dynamic:4/1/2/26 Thermo:2/1/1/5 :D Roller:9/-/1/51 (tier)
Rip maybe next year
- jaspattack
- Moderator
- Posts: 151
- Joined: April 30th, 2018, 8:29 am
- Division: Grad
- State: MO
- Has thanked: 163 times
- Been thanked: 169 times
- Contact:
Re: Fossils B/C
Where do you guys usually find info on the plant genera on the list? I'm having difficulty finding more specific information on extant ones, such as when they first appeared or things like that.
CHS '21 // Mizzou '25 | Jaspattack's Userpage
2020-21 Events: Designer Genes, Forensics, Ornithology, Protein Modeling
I edit the wiki sometimes.
2020-21 Events: Designer Genes, Forensics, Ornithology, Protein Modeling
I edit the wiki sometimes.
- jennarholt
- Member
- Posts: 13
- Joined: December 31st, 2018, 7:57 pm
- Division: C
- State: NC
- Pronouns: She/Her/Hers
- Has thanked: 1 time
- Been thanked: 0
Re: Fossils B/C
I found mine but just searching a lot and wikipedia, although I can't guarantee that gives you everything (my last page literally just says it's a fern it has fronds)jaspattack wrote:Where do you guys usually find info on the plant genera on the list? I'm having difficulty finding more specific information on extant ones, such as when they first appeared or things like that.
2023: Rocks and Minerals, Dynamic Planet, Cell Biology
2022: Rocks and Minerals (R.2nd, St. 3rd)
>2021: Fossils was the love of my life. Some days I can still hear its call...
2022: Rocks and Minerals (R.2nd, St. 3rd)
>2021: Fossils was the love of my life. Some days I can still hear its call...
-
- Member
- Posts: 220
- Joined: February 22nd, 2019, 4:02 pm
- Division: Grad
- State: VA
- Has thanked: 0
- Been thanked: 0
Re: Fossils B/C
Yeah, honestly once you have basic information like angiosperm or gymnosperm, seeds or spores, etc., and you can ID them, you'll probably get most of the questions on plants. The main one you should look into more thoroughly is probably Lepidodendron, but the others also have a few aspects that are often tested on. As for timeline information, fossilworks seems to be helpful: http://fossilworks.org/bridge.pl?a=taxo ... n_no=81701jennarholt wrote:I found mine but just searching a lot and wikipedia, although I can't guarantee that gives you everything (my last page literally just says it's a fern it has fronds)jaspattack wrote:Where do you guys usually find info on the plant genera on the list? I'm having difficulty finding more specific information on extant ones, such as when they first appeared or things like that.
here is the page on Acer, for example, and you can search for the others.
2019 Division C Nationals Medals:
4th place Fossils
5th place Sounds of Music
2nd place Thermodynamics
4th place Fossils
5th place Sounds of Music
2nd place Thermodynamics
- jaspattack
- Moderator
- Posts: 151
- Joined: April 30th, 2018, 8:29 am
- Division: Grad
- State: MO
- Has thanked: 163 times
- Been thanked: 169 times
- Contact:
Re: Fossils B/C
Thank you guys! My regional test questions about plants were pretty easy, but I wanted to make sure I was prepared as possible for state (-:
CHS '21 // Mizzou '25 | Jaspattack's Userpage
2020-21 Events: Designer Genes, Forensics, Ornithology, Protein Modeling
I edit the wiki sometimes.
2020-21 Events: Designer Genes, Forensics, Ornithology, Protein Modeling
I edit the wiki sometimes.
- DragonTownEpic
- Member
- Posts: 73
- Joined: October 4th, 2018, 5:45 pm
- Division: C
- State: CA
- Pronouns: He/Him/His
- Has thanked: 25 times
- Been thanked: 11 times
- Contact:
Re: Fossils B/C
Glossopteris too! I see it tested very frequently.wec01 wrote:Yeah, honestly once you have basic information like angiosperm or gymnosperm, seeds or spores, etc., and you can ID them, you'll probably get most of the questions on plants. The main one you should look into more thoroughly is probably Lepidodendron, but the others also have a few aspects that are often tested on. As for timeline information, fossilworks seems to be helpful: http://fossilworks.org/bridge.pl?a=taxo ... n_no=81701jennarholt wrote:I found mine but just searching a lot and wikipedia, although I can't guarantee that gives you everything (my last page literally just says it's a fern it has fronds)jaspattack wrote:Where do you guys usually find info on the plant genera on the list? I'm having difficulty finding more specific information on extant ones, such as when they first appeared or things like that.
here is the page on Acer, for example, and you can search for the others.
I CAN DAB AT COMPETITIONS AGAIN
-
- Exalted Member
- Posts: 1597
- Joined: January 18th, 2015, 7:42 am
- Division: C
- State: PA
- Has thanked: 6 times
- Been thanked: 15 times
Re: Fossils B/C
Glossopteris is importantly mainly because it helped with the theory of plate tectonicsDragonTownEpic wrote:Glossopteris too! I see it tested very frequently.wec01 wrote:Yeah, honestly once you have basic information like angiosperm or gymnosperm, seeds or spores, etc., and you can ID them, you'll probably get most of the questions on plants. The main one you should look into more thoroughly is probably Lepidodendron, but the others also have a few aspects that are often tested on. As for timeline information, fossilworks seems to be helpful: http://fossilworks.org/bridge.pl?a=taxo ... n_no=81701jennarholt wrote: I found mine but just searching a lot and wikipedia, although I can't guarantee that gives you everything (my last page literally just says it's a fern it has fronds)
here is the page on Acer, for example, and you can search for the others.
- Unome
- Moderator
- Posts: 4342
- Joined: January 26th, 2014, 12:48 pm
- Division: Grad
- State: GA
- Has thanked: 240 times
- Been thanked: 95 times
Re: Fossils B/C
Concur, fossils that have particular importance or interesting characteristics tend to come up more often. It's much easier to write questions about, say, Plateosaurus than about Astraeospongia.UTF-8 U+6211 U+662F wrote:Glossopteris is importantly mainly because it helped with the theory of plate tectonicsDragonTownEpic wrote:Glossopteris too! I see it tested very frequently.wec01 wrote: Yeah, honestly once you have basic information like angiosperm or gymnosperm, seeds or spores, etc., and you can ID them, you'll probably get most of the questions on plants. The main one you should look into more thoroughly is probably Lepidodendron, but the others also have a few aspects that are often tested on. As for timeline information, fossilworks seems to be helpful: http://fossilworks.org/bridge.pl?a=taxo ... n_no=81701
here is the page on Acer, for example, and you can search for the others.
Who is online
Users browsing this forum: No registered users and 8 guests