| 词条 | Grisellatheca |
| 释义 |
| fossil_range = {{fossil range|Early Devonian}} | genus = Grisellatheca | species = sulopensis | authority = Edwards et al. 1999 }}Grisellatheca was a genus of land plant with branching axes.[1] It is known from charcoalified Early Devonian deposits, its type locality being the Brown Clee Hill lagerstatten.[2] Its Terahedraletes spores form permanent tetrads.[3] Grisellatheca's internal anatomy comprises banded tubes, but it lacked an external cuticle.[3] It shows some liverwort characteristics, and is hesitantly assigned to this group.[3] References1. ^{{Cite journal | last1 = Boyce | first1 = C.K. | title = How green was Cooksonia? The importance of size in understanding the early evolution of physiology in the vascular plant lineage | journal = Paleobiology | volume = 34 | issue = 2 | pages = 179 | year = 2008 | doi = 10.1666/0094-8373(2008)034[0179:HGWCTI]2.0.CO;2 | issn = 0094-8373 }} {{paleobotany-stub}}2. ^{{Cite journal | last1 = Glasspool | first1 = I. | last2 = Edwards | first2 = D. | last3 = Axe | first3 = L. | title = Charcoal in the Early Devonian: A wildfire-derived Konservat–Lagerstätte | doi = 10.1016/j.revpalbo.2006.03.021 | journal = Review of Palaeobotany and Palynology | volume = 142 | issue = 3–4 | pages = 131 | year = 2006 | pmid = | pmc = }} 3. ^1 2 {{Cite journal | doi = 10.1111/j.1095-8339.1999.tb00515.x | last1 = Edwards | first1 = D. | last2 = Wellman | first2 = C. H. | last3 = Axe | first3 = L. | title = Tetrads in sporangia and spore masses from the Upper Silurian and Lower Devonian of the Welsh Borderland | journal = Botanical Journal of the Linnean Society | volume = 130 | issue = 2 | pages = 111–156 | year = 1999 }} 1 : Early Devonian plants |
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