Brecon Beacons Quarry, South Wales: Pragian, United Kingdom
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Dibolisporites sp. microspore
Richardson 1965
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Richardson and Lister 1969 | |||||||||
| cf. Apiculiretusispora brandtii | ||||||||||
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Deheubarthia splendens fertile axis, sterile axis
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Edwards et al. 1989 | |||||||||
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Tarella trowenii n. gen., n. sp. fertile axis
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Edwards and Kenrick 1986 | |||||||||
| based on 200 specimens | ||||||||||
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Uskiella spargens fertile axis
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Shute and Edwards 1989 | |||||||||
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Sennicaulis hippocrepiformis n. gen., n. sp. sterile axis
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Edwards 1981 | |||||||||
| 2 specimens | ||||||||||
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cf. Pachytheca sp.
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cf. Taitia sp. axis
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Heard 1939 | |||||||||
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Nematothallus sp.
Lang 1937
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| Listed in Cleal & Thomas but source not known. | ||||||||||
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Dictyotriletes spp. microspore
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Richardson and Lister 1969 | |||||||||
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Emphanisporites decoratus microspore
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Richardson and Lister 1969 | |||||||||
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Emphanisporites cf. robustus microspore
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Richardson and Lister 1969 | |||||||||
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Emphanisporites cf. rotatus microspore
Macgregor 1973
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Richardson and Lister 1969 | |||||||||
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Krithodeophyton croftii n. gen., n. sp. fertile axis
Edwards 1968
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Edwards 1968 | |||||||||
| includes spores of Apiculiretusispora brandtii type | ||||||||||
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Prototaxites sp.
Dawson 1859
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Heard 1939 | |||||||||
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Zosterophyllum llanoveranum fertile axis
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Croft and Lang 1942 | |||||||||
| **? has in situ spores | ||||||||||
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Zosterophyllum cf. fertile fertile axis
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Edwards 1969 | |||||||||
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Psilophytopsida
- Psilophytales
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Gosslingia breconensis n. gen., n. sp. fertile axis
Heard 1927
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Psilophytopsida
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Dawsonites arcuatus fertile axis
Halle 1916
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Croft and Lang 1942 | |||||||||
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unclassified
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Hostinella heardii n. sp. sterile axis
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Edwards 1980 | |||||||||
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Drepanophycus spinaeformis sterile axis, fertile axis
Goeppert 1852
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Croft and Lang 1942 | |||||||||
| **? | ||||||||||
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Retusotriletes cf. frivolus microspore
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Richardson and Lister 1969 | |||||||||
| var. limbatus | ||||||||||
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Retusotriletes spp. microspore
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Richardson and Lister 1969 | |||||||||
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Palaeomyces sp.
Renault 1896
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Edwards et al. 1986 | |||||||||
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Apiculiretusispora cf. plicata microspore
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Richardson and Lister 1969 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United Kingdom | State/province: | Wales | County: | Powys |
| Coordinates: | 52.0° North, 3.4° West (view map) | ||||
| Paleocoordinates: | 27.6° South, 4.7° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Altitude: | 151 meters | ||||
| Geographic resolution: | small collection |
Time
| Period: | Devonian | Epoch: | Early/Lower Devonian |
| Stage: | Pragian | 10 m.y. bin: | Devonian 1 |
| *Period: | Early/Lower Devonian | *Local age/stage: | Early/Lower Siegenian |
| Key time interval: | Pragian | ||
| Age range of interval: | 410.80000 - 407.60000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Senni Beds | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Early Seigenian according to Richardson et al. 1982. A thickness of about 14 meters of fluviatile sandstones and siltstones belonging to the Senni Beds is exposed and includes four horizons yielding plant fossils. | |||||
Lithology and environment
| Primary lithology: | gray,green lithified sandstone |
| Secondary lithology: | gray,green lithified sandy mudstone |
| Includes fossils? | Y |
| Lithology description: Heard 1927: """"""""sage-green arenaceous shales... intercalated among the typical sage-green sandstones of the Senni Beds of this locality. The fossil plants appear to be confined to the sediments of finer grain."""""""" Edwards 1970: """"""""very fine-grained, blue-grey, fissile sandstone, containing films of mudstone. | |
| Geology comments: Associated with channel fills. Plants may have lived on an alluvial plain or sand bar. | |
Taphonomy
| Modes of preservation: | adpression,permineralized,coalified,original carbon,original sporopollenin,replaced with pyrite,replaced with limonite |
| Size of fossils: | macrofossils,microfossils |
| Preservation of anatomical detail: | excellent |
Collection methods and comments
| Collection methods: | selective quarrying,surface (float),chemical,mechanical,peel or thin section,field collection,observed (not collected) |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Collected numerous times by numerous people. (Heard 1926, 1927, 1939; Cox & Heard 1937; Croft & Lang 1942; Edwards 1968, 1969a, b, 1970, 1980, 1981; Edwards & Kenrick 1986; Kenrick & Edwards 1988; Edwards & Banks 1965; Shute & Edwards, 1989) | |
Metadata
| Also known as: | Storey Arms Quarry and Craig-y-Fro Quarry | ||
| Database number: | 11088 | ||
| Authorizer: | P. Gensel | Enterer: | M. Kotyk |
| Modifier: | P. Gensel | Research group: | paleobotany |
| Created: | 2001-07-13 07:54:15 | Last modified: | 2003-10-22 14:56:15 |
| Access level: | group members | Released: | 2001-07-13 07:54:15 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 4078. | A. Heard. 1927. On Old Red Sandstone plants showing structure from Brecon (South Wales). Quarterly Journal of the Geological Society of London 85:195-209 [P. Gensel/M. Kotyk] |
Secondary references:
| 4070 | W. N. Croft and W. H. Lang. 1942. The Lower Devonian flora of the Senni Beds of Monmouthsire and Breconshire. Philosophical Transactions of the Royal Society of Britain 221:131-163 [P. Gensel/M. Kotyk] | |
| 4080 | D. Edwards. 1968. A new plant from the Lower Old Red Sandstone of South Wales. Palaeontology 11(5):683-690 [P. Gensel/M. Kotyk] | |
| 4074 | D. Edwards. 1969. Zosterophyllum from the lower Old Red Sandstone of South Wales. New Phytologist 68:923-931 [P. Gensel/M. Kotyk] | |
| 4081 | D. Edwards. 1980. Studies on Lower Devonian petrifactions from Britain; 1, Pyritised axes of Hostinella from the Brecon Beacons Quarry, Powys, South Wales. Review of Palaeobotany and Palynology 29:189-200 [P. Gensel/M. Kotyk] | |
| 4072 | D. Edwards. 1981. Studies on Lower Devonian petrifactions from Britain 2. Sennicaulis, a new form genus for sterile axes based on pyrite and limonite petrifactions from the Senni Beds. Review of Palaeobotany and Paynology 32:207-226 [P. Gensel/M. Kotyk] | |
| 4082 | D. Edwards and P. Kenrick. 1986. A new zosterophyll from the Lower Devonian of Wales. Botanical Journal of the Linnean Society 92:269-283 [P. Gensel/M. Kotyk] | |
| 4071 | D. Edwards, P. Kenrick, and L. M. Carluccio. 1989. A reconsideration of cf. Psilophyton princeps (Croft and Lang, 1942), a zosterophyll widespread in the Lower Old Red Sandstone of South Wales. Botanical Journal of the Linnean Society 100:293-318 [P. Gensel/M. Kotyk] | |
| 4084 | D. Edwards, V. Rose, L. P. Axe and P. Kenrick. 1986. Studies on Lower Devonian petrifactions from Britain; 3, Notes on putative fungal remains in zosterophylls from the Brecon Beacons, Powys, South Wales. Review of Palaeobotany and Palynology 48:241-251 [P. Gensel/M. Kotyk] | |
| 3948 | A. Heard. 1939. Further notes on Lower Devonian plants from South Wales. Quarterly Journal of the Geological Society of London 95:223-229 [P. Gensel/M. Kotyk] | |
| 4144 | J. B. Richardson and T. R. Lister. 1969. Upper Silurian and Lower Devonian spore assemblages from the Welsh Borderland and South Wales. Palaeontology 12:201-252 [P. Gensel/M. Kotyk] | |
| 4073 | C. H. Shute and D. Edwards. 1989. A new rhyniopsid with novel sporangium organization from the Lower Devonian of South Wales. Botanical Journal of the Linnean Society 100:111-137 [P. Gensel/M. Kotyk] |