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Dicroidium
Taxonomy
Dicroidium was named by Gothan (1912). It is not extant. Its type is Xylopteris elongata.
It was assigned to Pteridospermophyta by Andrews (1970); to Umkomasiaceae by Meyen (1984); and to Corystospermaceae by Jain and Delevoryas (1967), Lakhanpal et al. (1976), Holmes (1982), Chandra and Tewari (1991), Cantrill et al. (1995), Moisan et al. (2010) and Chatterjee et al. (2013).
It was assigned to Pteridospermophyta by Andrews (1970); to Umkomasiaceae by Meyen (1984); and to Corystospermaceae by Jain and Delevoryas (1967), Lakhanpal et al. (1976), Holmes (1982), Chandra and Tewari (1991), Cantrill et al. (1995), Moisan et al. (2010) and Chatterjee et al. (2013).
Species
D. coriaceum, D. crassinervis, D. dubium (syn. Sphenopteris bergina), D. elongatum, D. eskense, D. feistmantelii, D. fremouwensis, D. giarensis, D. gopadensis, D. irnensis, D. jordanensis, D. natalense, D. nidpurensis, D. odontopteroides (syn. Thinnfeldia subtrigona), D. papillosum, D. prolungatum, D. robustum, D. sahnii, D. shirleyi, D. spinifolium, D. stelznerianum, D. superbum, D. voiseyi, D. zuberi
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1912 | Dicroidium Gothan |
| 1967 | Dicroidium Jain and Delevoryas |
| 1970 | Dicroidium Andrews |
| 1976 | Dicroidium Lakhanpal et al. |
| 1982 | Dicroidium Holmes |
| 1984 | Dicroidium Meyen p. 89 |
| 1991 | Dicroidium Chandra and Tewari |
| 1995 | Dicroidium Cantrill et al. |
| 2010 | Dicroidium Moisan et al. |
| 2013 | Dicroidium Chatterjee et al. |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Dicroidium Gothan 1912
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†Dicroidium coriaceum Johnston 1886
†Dicroidium crassinervis Geinitz 1876
†Dicroidium dubium Feistmantel 1878
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Invalid names: Sphenopteris bergina Jones and de Jersey 1947 [synonym]
†Dicroidium elongatum Carruthers 1872
†Dicroidium eskense Walkom 1928
†Dicroidium feistmantelii Johnston 1847
†Dicroidium fremouwensis Pigg 1990
†Dicroidium giarensis Pal 1984
†Dicroidium gopadensis Bose and Srivastava 1971
†Dicroidium irnensis Abu Hamad et al. 2008
†Dicroidium jordanensis Abu Hamad et al. 2008
†Dicroidium natalense Frenguelli 1943
†Dicroidium nidpurensis Bose and Srivastava 1971
†Dicroidium odontopteroides Morris 1845
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Invalid names: Thinnfeldia subtrigona Feistmantel 1879 [synonym]
†Dicroidium papillosum Bose and Srivastava 1971
†Dicroidium prolungatum Menéndez 1951
†Dicroidium robustum Abu Hamad et al. 2008
†Dicroidium sahnii Seward 1932
†Dicroidium shirleyi Holmes 1982
†Dicroidium spinifolium Tenison-Woods 1883
†Dicroidium stelznerianum Geinitz 1876
†Dicroidium superbum Shirley 1898
†Dicroidium voiseyi Holmes and Ash 1979
†Dicroidium zuberi Szajnocha 1888
Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available
Age range: base of the Lopingian to the top of the Late/Upper Jurassic or 259.90000 to 145.00000 Ma
Collections (114 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Permian | Turkey (Diyarbakir) | D. sp. (27809) | |
| Wordian - Lopingian | India (Madhya Pradesh) | D. sp. 1, D. sp. 2, D. sp. 3 (30173) | |
| Wordian - Lopingian | India | D. sp. 1 (30172 30178) | |
| Capitanian - Wuchiapingian | Madagascar | D. sp. 1 (30280) | |
| Lopingian | Jordan | D. sp., D. robustum, D. sp. B, D. sp. A (231024) | |
| Lopingian - Early/Lower Triassic | India (West Bengal) | D. sp. (229205) | |
| Early/Lower Triassic | Australia (New South Wales) | D. sp. 1, D. sp. 2, D. sp. 3 (29451) | |
| Early/Lower Triassic | India (Madhya Pradesh) | D. gopadensis, D. nidpurensis, D. papillosum (30132) D. sp. (226938 229389) | |
| Early/Lower Triassic | India | D. sp. 1, D. sp. 2, D. sp. 3 (30134) | |
| Early/Lower Triassic | Antarctica | D. sp. 1, D. sp. 2 (29350) | |
| Early/Lower Triassic | India (Jharkhand) | Thinnfeldia sahnii (225067) | |
| Triassic | Chile (Chañaral) | D. lancifolium, D. odontopteroides (224049) | |
| Triassic | Argentina (San Juan) | Zuberia feistmanteli (141587) | |
| Triassic | India (Madhya Pradesh) | D. odontopteroides, D. feistmantelii, Thinnfeldia sahnii (226939) | |
| Triassic | Argentina (Mendoza) | Zuberia feistmanteli (153399) | |
| Anisian | Australia (New South Wales) | D. prolungatum, D. eskense, D. voiseyi, D. spinifolium, D. natalense, D. shirleyi, D. superbum, D. zuberi (207608) | |
| Anisian | New Zealand | D. dubium (61459) | |
| Anisian | China (Liaoning) | D. sp. 1 (29984) | |
| Middle Triassic | Brazil (Rio Grande do Sul) | D. sp. 1, D. sp. 2, D. sp. 3, D. sp. 4, D. sp. 5, D. sp. 6, D. sp. 7, D. sp. 8 (29475) | |
| Middle Triassic | Antarctica | D. sp. 1, D. sp. 2 (29349) | |
| Middle Triassic | Argentina (Mendoza) | D. lancifolium, D. crassum, D. odontopteroides (200132) D. sp. 1 (29384) | |
| Middle Triassic | Australia (Queensland) | D. sp. 1, D. sp. 2, D. sp. 3, D. sp. 4, D. sp. 5 (29421) | |
| Middle Triassic | Australia (New South Wales) | D. sp. 1, D. sp. 2, D. sp. 3, D. sp. 4, D. sp. 5 (29423) | |
| Middle Triassic - Late/Upper Triassic | Chile | D. sp. 1, D. sp. 2, D. sp. 3 (29507) | |
| Middle Triassic - Late/Upper Triassic | Chile (Huasco) | D. lancifolium (223791) D. odontopteroides (223788) | |
| Ladinian | Brazil (Rio Grande do Sul) | D. sp. (116119) | |
| Ladinian - Carnian | Argentina (Mendoza) | D. sp. 1, D. sp. 2, D. sp. 3, D. sp. 4 (29404) | |
| Carnian | Antarctica (Victoria Land) | D. sp. (107212) | |
| Carnian | Argentina (Mendoza) | D. odontopteroides, D. coriacium, D. feistmanteli (84244) | |
| Carnian | Chile | D. crassinervis, D. elongatum (201288) D. odontopteroides (201289) D. odontopteroides, D. coriaceum (207683) D. sp. (201290) | |
| Carnian | South Africa | D. sp. (23084) | |
| Carnian | South Africa (Free State) | D. sp. (23095) | |
| Carnian | South Africa (Kwazulu-Natal) | D. sp. (23002) | |
| Carnian | South Africa (Eastern Cape) | D. sp. (23004 23086 23131 23133 23134 23142 23143 23170 23259 23261 23263 23317) | |
| Carnian | Lesotho | D. sp. (23075) | |
| Carnian | Antarctica | D. crassinervis, D. odontopteroides, D. fremouwensis (207741) | |
| Carnian - Norian | Lesotho | D. lancifolia (84061) | |
| Late/Upper Triassic | Lesotho | D. lancifolia, D. odontopteroides, D. feistmanteli (208639) D. sp. (23087 23128 23129) | |
| Late/Upper Triassic | Argentina (Santa Cruz) | D. sp. 1 (29383) | |
| Late/Upper Triassic | Chile | D. sp. 1 (29509) | |
| Late/Upper Triassic | South Africa | D. sp. (23130) | |
| Late/Upper Triassic | South Africa (Free State) | D. sp. (23136 23226 23262) | |
| Late/Upper Triassic | South Africa (Kwazulu-Natal) | D. sp. (23003 23015 23069 23070 23076) | |
| Late/Upper Triassic | Argentina (Mendoza) | D. argenteum, D. odontopteroides (210079) D. sp. 1, D. sp. 2, D. sp. 3, D. sp. 4, D. sp. 5, D. sp. 6, D. sp. 7 (29405) | |
| Late/Upper Triassic | India (Madhya Pradesh) | D. zuberi (226713) | |
| Late/Upper Triassic | Argentina (Neuquen) | D. sp. 1, D. sp. 2, D. sp. 3 (29403) D. sp. 1, D. sp. 2, D. sp. 3, D. sp. 4 (29410) D. sp. 1, D. sp. 2, D. sp. 3, D. sp. 4, D. sp. 5 (29411) | |
| Late/Upper Triassic | South Africa (Eastern Cape) | D. sp. (23093 23127 23132 23138 23139 23140 23144 23147 23167 23168 23172 23175 23221 23222 23223 23224 23228 23229 23264 23266 23322 23325) | |
| Late/Upper Triassic | Antarctica | D. sp. 1, D. sp. 2 (29364) D. zuberi (207740) | |
| Late/Upper Triassic | Chile (Huasco) | D. odontopteroides (223790) | |
| Norian | Lesotho (Mohale's Hoek) | D. sp. (56018) | |
| Norian | Australia (Queensland) | Sphenopteris superba (111777) | |
| Norian | India (Madhya Pradesh) | D. odontopteroides, D. coriaceum, D. zuberi, D. giarensis (30181) D. sp., D. zuberi (30180) | |
| Norian | Chile (Huasco) | D. sp. (223233) | |
| Norian | Chile | D. sp. 1, D. sp. 2 (29508) | |
| Norian - Rhaetian | Chile (Atacama) | D. sp. (206095) | |
| Early/Lower Jurassic | Antarctica | D. sp. 1 (29344) | |
| Sinemurian - Toarcian | Russian Federation | D. sp. 1 (30626) | |
| Late/Upper Jurassic | India (Tamil Nadu) | D. sp. (224646) | |
| Late/Upper Jurassic | India (Andhra Pradesh) | D. sp. (224766) D. sp., D. feistmantelii, Thinnfeldia subtrigona (224604) |