''Hirmeriella'' is a genus of fossil tree, a conifer that was widespread in Late Triassic and Early

Jurassic The Jurassic ( ) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The Jurassic constitutes the middle period of ...

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...

, the UK, and

Poland Poland, officially the Republic of Poland, is a country in Central Europe. It is divided into 16 administrative provinces called voivodeships, covering an area of . Poland has a population of over 38 million and is the fifth-most populou ...

.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 Glamorgan, south

Wales Wales ( cy, Cymru ) is a country that is part of the United Kingdom. It is bordered by England to the east, the Irish Sea to the north and west, the Celtic Sea to the south west and the Bristol Channel to the south. It had a population in ...

, where many of the UK's earliest mammal fossils have been found such as '' Morganucodon''. 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.

References

Triassic plants Jurassic plants Conifers Mesozoic trees Prehistoric gymnosperm genera {{jurassic-plant-stub