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    (Original post by Vikingninja)
    A characteristic of calymene was that they had crescent shaped eyes set on the cheeks. This looked more like an asaphus where the eyes were on high stalks and weren't crescent shaped.



    The nektonic forms have forward stalks though this was on top. Also the exoskeleton wasn't suitable as a nektonic form.
    Eyes on stalk always a nektonic feature
    Why would bethonic have eyes as light cannot penetrate 200m>
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    (Original post by Pablo Picasso)
    It was 2 marker tho. Should've been too complication. 1 for mode of life, and 1 for one feature.

    What did you write for how the enrolled trilobite moved ...
    2 organisms that orodce verticle burrows (i wrote bivavles & trilobites)
    What animal did you write for preserved exceptionally in the jurassic bed
    2 evidence for bird evolved from dinosaurs

    Ask if you couldnt answer a Q
    I said it enrolled for self defence but otherwise would have "walked" with jointed appendages.

    Trilobites didnt dig vertically they were only shallow infaunal, i put bivalves and gastropods

    What question was that one? if you mean the solenhofen limestone it was archaeopteryx

    Hollow bones in saurischians and similar hip structure, also could have said archaeopteryx was the ""missing link""
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    (Original post by Vikingninja)
    A characteristic of calymene was that they had crescent shaped eyes set on the cheeks. This looked more like an asaphus where the eyes were on high stalks and weren't crescent shaped.



    The nektonic forms have forward stalks though this was on top. Also the exoskeleton wasn't suitable as a nektonic form.
    What 2 preservation for graptolites did you say
    And what did you write as the answer for the two exhinoid group? Wtf, i though they were the same group
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    (Original post by Pablo Picasso)
    It was 2 marker tho. Should've been too complication. 1 for mode of life, and 1 for one feature.

    What did you write for how the enrolled trilobite moved ...
    2 organisms that orodce verticle burrows (i wrote bivavles & trilobites)
    What animal did you write for preserved exceptionally in the jurassic bed
    2 evidence for bird evolved from dinosaurs

    Ask if you couldnt answer a Q
    What I put in order:
    Walked on appendages.
    Burrowing bivalves and irregulars Echinoids.
    Archaeopteryx (if you mean te solhnhon or however its spelled).
    I put features of archaeopteryx (feathers and hallow bones).
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    (Original post by Vikingninja)
    There's only 18 students in my year, 2 people dropped it after AS. There were 3 classes in the year above and there are 2 below. It's quite a rare subject
    I gathered.
    It must be offered by posh schools
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    (Original post by Pablo Picasso)
    Eyes on stalk always a nektonic feature
    Why would bethonic have eyes as light cannot penetrate 200m>
    Trilobites were shallow marine. Also benthonic calymene had eyes which were advanced for organisms at the time. I put the name of a benthonic trilobite with stalks in another post here.
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    (Original post by Vikingninja)
    Trilobites were shallow marine. Also benthonic calymene had eyes which were advanced for organisms at the time. I put the name of a benthonic trilobite with stalks in another post here.
    Ikr, so nektonic is wrong then?
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    (Original post by Pablo Picasso)
    What 2 preservation for graptolites did you say
    And what did you write as the answer for the two exhinoid group? Wtf, i though they were the same group
    Carbonisation and replacement. Which question was the Echinoid one again, is it the one where you had to state features on the diagrams?

    (Original post by ODES_PDES)
    I gathered.
    It must be offered by posh schools
    No, my school is not posh.
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    (Original post by Pablo Picasso)
    Ikr, so nektonic is wrong then?
    The exoskeleton looked benthonic. Pleura weren't spaced and no inflated glabella.
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    (Original post by Vikingninja)
    Carbonisation and replacement. Which question was the Echinoid one again, is it the one where you had to state features on the diagrams?



    No, my school is not posh.
    Is the one where you had to name the group of each regular and irregular echinoids
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    (Original post by Vikingninja)
    Carbonisation and replacement. Which question was the Echinoid one again, is it the one where you had to state features on the diagrams?



    No, my school is not posh.
    I put replacement and pyritisation for graptolites, couldnt have been carbonisation as they have no carbon in them.. skeleton is formed from scleroprotein which is why they're preserved below the CCD
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    (Original post by Pablo Picasso)
    Is the one where you had to name the group of each regular and irregular echinoids
    Can't remember that one, the one that sounds most similar to that one is with the diagrams you had to use to show their mode of life.
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    (Original post by Vikingninja)
    Can't remember that one, the one that sounds most similar to that one is with the diagrams you had to use to show their mode of life.
    yeah i cant figure out the question they're referring to either
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    (Original post by savingwonderland)
    yeah i cant figure out the question they're referring to either
    The group both echinoids belonged to. On the first page of the echinoids Q

    Doesnt matter anyone, bring up another Q
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    (Original post by Pablo Picasso)
    The group both echinoids belonged to. On the first page of the echinoids Q

    Doesnt matter anyone, bring up another Q
    what preservation methods did you put for graptolites
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    (Original post by savingwonderland)
    I put replacement and pyritisation for graptolites, couldnt have been carbonisation as they have no carbon in them.. skeleton is formed from scleroprotein which is why they're preserved below the CCD
    I Remember in the textbook that it says graptolites can be preserved by carbonisation. We were never taught what it's exact composition was.

    (Original post by Pablo Picasso)
    The group both echinoids belonged to. On the first page of the echinoids Q

    Doesnt matter anyone, bring up another Q
    Yeah I can't remember that one.

    With the two brachiopods did you put the mode of life for both was benthonic, epifaunal sessile?
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    (Original post by savingwonderland)
    what preservation methods did you put for graptolites
    Carbo and Pyrit, not sure if Pyrit would be acceptabke?
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    (Original post by Vikingninja)
    I Remember in the textbook that it says graptolites can be preserved by carbonisation. We were never taught what it's exact composition was.


    Yeah I can't remember that one.

    With the two brachiopods did you put the mode of life for both was benthonic, epifaunal sessile?
    Yep but for the first i put attached by the pedicle and the second i said free lying with spines to spread weight
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    (Original post by savingwonderland)
    I put replacement and pyritisation for graptolites, couldnt have been carbonisation as they have no carbon in them.. skeleton is formed from scleroprotein which is why they're preserved below the CCD
    It's always carbonisation
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    (Original post by Pablo Picasso)
    Carbo and Pyrit, not sure if Pyrit would be acceptabke?
    yea i got replacement and pyritisation cause they're preserved below CCD so no carbon
 
 
 
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