A=fern, B= Calamites C= Annularia; they are form/morphological taxons meaning that each major anatomical feature is its own fossils. For example, Annularia is this specific leaf pattern, while Astreophyllites is another and the overall genus is Calamites
Fossils B/C
-
- Member
- Posts: 163
- Joined: March 14th, 2015, 9:02 pm
- Division: Grad
- State: PA
- Has thanked: 0
- Been thanked: 0
Re: Fossils B/C
Liberal Arts and Science Academy 2015-2017
University of Pennsylvania 2021
MIT Rocks and Minerals 2018, Fossils 2019
varunscs11's Userpage
University of Pennsylvania 2021
MIT Rocks and Minerals 2018, Fossils 2019
varunscs11's Userpage
-
- 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
Correct, your turn!varunscs11 wrote:A=fern, B= Calamites C= Annularia; they are form/morphological taxons meaning that each major anatomical feature is its own fossils. For example, Annularia is this specific leaf pattern, while Astreophyllites is another and the overall genus is Calamites
-
- Member
- Posts: 163
- Joined: March 14th, 2015, 9:02 pm
- Division: Grad
- State: PA
- Has thanked: 0
- Been thanked: 0
Re: Fossils B/C
Is it possible to tell the difference between a Crinoid columnal and a Blastoid columnal?
Liberal Arts and Science Academy 2015-2017
University of Pennsylvania 2021
MIT Rocks and Minerals 2018, Fossils 2019
varunscs11's Userpage
University of Pennsylvania 2021
MIT Rocks and Minerals 2018, Fossils 2019
varunscs11's Userpage
-
- 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
varunscs11 wrote:Is it possible to tell the difference between a Crinoid columnal and a Blastoid columnal?
No, but crinoid stems are generally bigger.
-
- Member
- Posts: 163
- Joined: March 14th, 2015, 9:02 pm
- Division: Grad
- State: PA
- Has thanked: 0
- Been thanked: 0
Re: Fossils B/C
Correct. It is impossible to tell for sure whether it is a blastoid or crinoid unless the theca/calyx is fossilized along with the columnal 

Liberal Arts and Science Academy 2015-2017
University of Pennsylvania 2021
MIT Rocks and Minerals 2018, Fossils 2019
varunscs11's Userpage
University of Pennsylvania 2021
MIT Rocks and Minerals 2018, Fossils 2019
varunscs11's Userpage
-
- 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
Random Number generator told me to ask this question:
[img]http://upload.wikimedia.org/wikipedia/commons/7/72/Chthamalus_stellatus.jpg[/img]
- Unome
- Moderator
- Posts: 4323
- Joined: January 26th, 2014, 12:48 pm
- Division: Grad
- State: GA
- Has thanked: 228 times
- Been thanked: 82 times
-
- 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
I was looking for sessile, as not all barnacles are filter feeder, but that is correct! Your turn!Unome wrote:1. Animalia 2. Arthropoda 3. Maxillopoda? 4. Barnacle 5. Filter feeder
P.S. I kind of seeing if some newbie would answer coral.

-
- Member
- Posts: 163
- Joined: March 14th, 2015, 9:02 pm
- Division: Grad
- State: PA
- Has thanked: 0
- Been thanked: 0
Re: Fossils B/C
Thanks guys for posting so frequently. Texas State is this weekend and AP's are coming up as well



Liberal Arts and Science Academy 2015-2017
University of Pennsylvania 2021
MIT Rocks and Minerals 2018, Fossils 2019
varunscs11's Userpage
University of Pennsylvania 2021
MIT Rocks and Minerals 2018, Fossils 2019
varunscs11's Userpage
-
- 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
You're welcome. PA State is also this weekend.varunscs11 wrote:Thanks guys for posting so frequently. Texas State is this weekend and AP's are coming up as well![]()

Who is online
Users browsing this forum: No registered users and 0 guests