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916 Views 8 Replies Last post: Sep 13, 2013 10:17 PM by Fiona - Museum ID team RSS
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Aug 11, 2013 6:33 AM

habitait of early cretaceous wigan?

you here all these things about cretaceous period down south but never in the north. does anybody have any info and what lived there e.g igunadon and if anybody wants to go further detail can anbody tell me the habitait and creatures of early creataceous wigan ?

 

thanks

 

TJ harte

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    Aug 11, 2013 9:38 AM (in response to tjharte)
    Re: habitait of early cretaceous wigan?

    TJ,

     

    Good question.

     

    Much of the answer is speculation, because in the Wigan area any rocks that were deposited during the Cretaceous no longer exist. Therefore we don't have fossils from that time and place, and we don't even have the rocks (from which we might have been able to make a better interpretation of the environment). It is thought that the Cretaceous fluvial deposits and chalk (now prominent in the SE of England) extended over much of Britain, and until the late Cretaceous extinction event, reptiles could have been present (

    http://www.naturalengland.org.uk/ourwork/conservation/geodiversity/englands/geological_history/stratiperiod4.aspx).

    That actually states: "Reptiles were the main large predators and herbivores of the Cretaceous world and dominated both terrestrial and marine habitats. Many species of dinosaurs occurred and their remains are commonly found in the Lower Cretaceous river deposits of the Weald Group."

    So Iguanodon could have been in the area in the early Cretaceous.

    The habitat: that's answered as best I can in the same reference.

     

    Wish I could give you more detail and more confidence.

     

    Mike

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      Sep 12, 2013 8:44 PM (in response to tjharte)
      Re: habitait of early cretaceous wigan?

      I would expect tundra, with the edge of the ice-sheet in Scotland and glaciers in the Lake District.

      Trees (boreal forest) would not have emerged. There would be low growing vegetation, such as the Dryas octopetala after which the Dryas was named, dwarf willows, lichen, etc.

       

      However, it may have been relatively dry, going on this paper:

      Walker, M. J. C. (2004). "A Lateglacial pollen record from Hallsenna Moor, near Seascale, Cumbria, NW England, with evidence for arid conditions during the Loch Lomond (Younger Dryas) Stadial and early Holocene". Proceedings of the Yorkshire Geological Society 55: 33–42.

       

      So that tundra-style vegetation may have been thin on the ground; pioneer.

       

      See also:

      Reconstructing Loch Lomond Stadial Glaciers and Climate in the south-west English Lake District

      BROWN, VICTORIA,HELEN (2009)

      Masters thesis, Durham University

      http://etheses.dur.ac.uk/155/

       

      Mike

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        Sep 13, 2013 10:17 PM (in response to MikeHardman)
        Re: habitait of early cretaceous wigan?

        Dear tjharte -  response to original post only

         

        Sorry, this is not possible to answer because we do not have evidence. At any location, the rocks exposed provide the evidence through the types of fossil specimens and rocks (sand, clay, limestone etc.) we can think of them as providing .... 'windows back through time', providing a glimpse of the world at that point in time in that specific locality - but not everything. If the rocks of that age are not available, we cannot know.

         

        No rocks /fossils = no data = no interpretation ....

        Kind regards,

        Fiona

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