Re: Fossils B/C
Posted: March 15th, 2019, 2:46 pm
wec01 wrote:List one specimen from the list that went extinct during each of the 5 major mass extinctions.
O-S:Isotelus
Late D:Heliophyllum
P-T:Rhombopora
T-J:Gryphaea
K-Pg:Triceratops
wec01 wrote:List one specimen from the list that went extinct during each of the 5 major mass extinctions.
O-S:Isotelus
Late D:Heliophyllum
P-T:Rhombopora
T-J:Gryphaea
K-Pg:Triceratops
hmmm wrote:wec01 wrote:List one specimen from the list that went extinct during each of the 5 major mass extinctions.O-S:Isotelus
Late D:Heliophyllum
P-T:Rhombopora
T-J:Gryphaea
K-Pg:Triceratops
I believe Gryphaea went extinct after the end Triassic extinction.
Name an index fossil on the list for the Cambrian,Devonian,Mississippian,Permian,Jurassic,and Cretaceous.
hmmm wrote:Name an index fossil on the list for the Cambrian,Devonian,Mississippian,Permian,Jurassic,and Cretaceous.
Cambrian: Elrathia Devonian: Eldredgeops Mississippian: Archimedes Permian: Fusulinida Jurassic: Dactylioceras Cretaceous: Bellemnitella
I have Archimedes as Mississippian to Permian and Fusulinida as Pennsylvanian to Permian. Everything else looks right. Your turn.wec01 wrote:hmmm wrote:Name an index fossil on the list for the Cambrian,Devonian,Mississippian,Permian,Jurassic,and Cretaceous.Cambrian: Elrathia Devonian: Eldredgeops Mississippian: Archimedes Permian: Fusulinida Jurassic: Dactylioceras Cretaceous: Bellemnitella
wec01 wrote:What part of each of the following organisms is most commonly preserved in the fossil record?:
1. Bellemnitella
2. Foraminifera
3. Orthoceras
4. Crinoidea
5. Blastoidea
6. Anthozoa
1.rostrum/guard 2.test 3.camarae? 4.stem 5.theca 6.corallum
hmmm wrote:wec01 wrote:What part of each of the following organisms is most commonly preserved in the fossil record?:
1. Bellemnitella
2. Foraminifera
3. Orthoceras
4. Crinoidea
5. Blastoidea
6. Anthozoa1.rostrum/guard 2.test 3.camarae? 4.stem 5.theca 6.corallum
for 3, I was looking for phragmocone, but that's made up of the camerae, so that answer makes sense too.
[img]https://files.geocollections.info/large/fa/01/fa01b93b-8243-4c6a-9ab9-cd3a0f75656a.jpg[/img] 1.ID 2.What is it doing and why? 3.What type of eyes? 4.What does the name mean?
Genus Calymene, It's rolled up for defense, compound eyes, beautiful crescent