Ages of some obscure genera

[Mike Taylor <mike@indexdata.com>]

Can anyone help me out with when the following genera are believed to
have lived?  Many thanks in advance.

        Aletopelta
        Glyptodontopelta
        Heptasteornis
        Jeholosaurus
        Stegopelta
        Yimenosaurus

 _/|_    _______________________________________________________________
/o ) \/  Mike Taylor  <mike@indexdata.com>  http://www.miketaylor.org.uk
)_v__/\  "It is always the best policy to speak the truth, unless
         of course you are an exceptionally good liar" -- Jerome
         K. Jerome.

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