Large leafy calamite stems are very rare in the fossil record. One such leafy stem is described as
a new species, Calamites cambrensis, from shales above the No 2 Rhondda Seam in the Bolsovian of the South
Wales Coalfield.
REFERENCES(22)
1.
Andrews, H.N., 1952. Some American petrified stems. Annals of the Missouri Botanical Garden 39, 189–218. https://doi.org/10.2307/239452....
Bartell, M., 1980. Calamiten aus dem Oberkarbon und Rotliegenden des Thüringer Waldes. In: Vent, W. (ed.), 100 Jahre Arboretum (1879–1979). pp. 237–258.
Crookall, R., 1969. Fossil plants of the Carboniferous rocks of Great Britain [Second section]. Part 5. Memoirs of the Geological Survey of Great Britain, Palaeontology 4, xxi-xxviii, 573–792.
Gothan, W., Leggewie, W., Schönfeld, W., 1959. Die Steinkohlenflora der westlichen paralischen Steinkohlenreviere Deutschlands Lieferung 6 Geologie Jahrbuch 36, 1–90.
Jongmans, W.J., 1911. Anleitung zur Bestimmung der Karbonpflanzen West-Europas mit besonderer Berucksichtigung der in den Niederlanden und den benachbarten Ländern gefundenden oder noch zur erwartenden Arten. I Thallophytae, Equisetales, Sphenophyllales. Craz & Gerlach, Frieberg. https://doi.org/10.5962/bhl.ti....
Rössler, R., Noll, R., 2006. Sphenopsids of the Permian.. Part 1, The largest known anatomically preserved calamite; an exceptional find from the petrified forest of Chemnitz, Germany. Review of Palaeobotany and Palynology 140, 145–162. https://doi.org/10.1016/j.revp....
Stur, D., 1887. Beiträge zur Kenntnis der Flora der Vorwelt, Bd. ii, Abth. 2. Die Carbon-flora der Schatzalerer Schichten, 2, die Calamarien. Abhandlungen der Kaiserlich-Königlichen Geologischen Reichsanstalt 11-2, 1–240.
Thomas, B.A., 2013. In situ stems: preservation states and growth habits of the Pennsylvanian (Carboniferous) calamitaleans based upon new studies of Calamites Sternberg, 1829 in the Duckmantian at Brymbo, North Wales, UK. Palaeontology 57, 21–36. https://doi.org/10.1111/pala.1....
Weiss, C.E., 1884. Fossile der jüngsten Steinkohlenformation und Beiträge zur fossils. 2 Steinkohlen- Calamarian. Abhandlungen zur geologischen Specialkarte von Preussen und den thüringischen Staaten 5(2), 204 pp.
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