Here is a fossil leaf branch of a dawn redwood of the species Metasequoia occidentalis from Montana. The Tree genus Metasequoia was until the discovery of a relict population in 1941 in China only known from fossil specimens. The dawn redwood is a classical example of a living fossil. The today living species Metasequoia glyptostroboides all the year green. The short branches with the nedels become red- brown when the fall in autumn.
Beaverhead County, Montana
Size of Matrix:
about 121 x 57 mm
Oligocene , Muddy Creek Formation (ca. 34 Mill. Jahre)