''Hirmeriella'' is a genus of fossil tree, a
Conifers are a group of cone-bearing seed plants, a subset of gymnosperms. Scientifically, they make up the division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a single extant class, Pinopsida. All exta ...
that was widespread in Late Triassic and Early
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic period million years ago (Year, Mya) to the beginning of the Cretaceous period approximately Mya. T ...
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, languages = German language, German
, demonym = Germans, German
, government_ ...
, the UK
Poland ( pl, Polska ), officially the Republic of Poland ( pl, Rzeczpospolita Polska, links=no ), is a country located in Central Europe. It is divided into 16 Voivodeships of Poland, administrative provinces, covering an area of , and ha ...
[BARBACKA M., ZIAJA J., WCISŁO-LURANIEC E. 200]
Hirmeriella muensteri (Schenk) Jung from Odrowąż (Poland), with female and male cones, and in situ Classopollis pollen grains
Acta Palaeobotanica 47(2): 339–357, 2007
It is common in the fissure fills of
, HQ = Cardiff
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* West Glamorgan
* Mid Glamorgan
* South Glamorgan
, Motto ...
Wales ( cy, Cymru ) is a country that is Countries of the United Kingdom, part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, and the Bristol Channel to the south. It ...
, where many of the UK's earliest mammal fossils have been found such as ''
The name ''Hirmeriella muensteri'' has now been used to describe the whole plant, but it may also specifically refer to fossils of female parts of the plant, while male parts of the conifer may be known by the scientific name ''Brachyphyllum muensteri'', and fossils with neither gender parts have been known as ''Pagiophyllum''.
''Hirmeriella'' is also known by the pseudonym ''Cheirolepis muensteri''.
''Hirmeriella muensteri'' may have grown in dry, extreme conditions, and been fire tolerant, although other authors have cited evidence from water wicking leaves as signs they were found in humid, water rich environments.
[METCALFE C. R. & CHALK L. 1979. Anatomy of the Dicotyledons. Oxford University Press.]