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Cycadeoidea
Taxonomy
Cycadeoidea was named by Buckland (1828). It is not extant. Its type is Cycadeoidea megalophylla.
It was assigned to Bennettitaceae by Knowlton (1919); to Cycadeoideopsida by Andrews (1970); to Cycadeoideales by Chandra and Tewari (1991); and to Bennettitales by Watson and Sincock (1992).
It was assigned to Bennettitaceae by Knowlton (1919); to Cycadeoideopsida by Andrews (1970); to Cycadeoideales by Chandra and Tewari (1991); and to Bennettitales by Watson and Sincock (1992).
Subtaxa
C. aspera, C. bibbinsi, C. cicatricula, C. clarkiana, C. colei, C. colossalis, C. dacotensis, C. dartoni, C. emmonsi, C. excelsa, C. fisherae, C. fontaineana, C. formosa, C. furcata, C. goucheriana, C. heliochorea, C. ingens, C. insoleta, C. jenneyana, C. marshiana, C. marylandica, C. mcbridei, C. mcgeeana, C. megalophylla (type species), C. minima, C. minnekahtensis, C. mirabilis (syn. C. zamiostrobus), C. munita, C. nana, C. nigra, C. occidentalis, C. paynei, C. protea, C. pulcherrima, C. reticulata, C. rhombica, C. stantoni, C. stillwelli, C. superba, C. turrita, C. tysoniana, C. uddeni, C. uhleri, C. wellsii, C. wielandi
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1828 | Cycadeoidea Buckland |
| 1919 | Cycadeoidea Knowlton |
| 1970 | Cycadeoidea Andrews |
| 1991 | Cycadeoidea Chandra and Tewari |
| 1992 | Cycadeoidea Watson and Sincock |
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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. †Cycadeoidea Buckland 1828
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†Cycadeoidea aspera Ward 1898
†Cycadeoidea bibbinsi Ward 1897
†Cycadeoidea cicatricula Ward 1898
†Cycadeoidea clarkiana Ward 1905
†Cycadeoidea colei Ward 1898
†Cycadeoidea colossalis Ward 1898
†Cycadeoidea dacotensis Ward
†Cycadeoidea dartoni Wieland 1916
†Cycadeoidea emmonsi Fontaine 1883
†Cycadeoidea excelsa Ward 1898
†Cycadeoidea fisherae Ward 1905
†Cycadeoidea fontaineana Ward 1897
†Cycadeoidea formosa Ward 1898
†Cycadeoidea furcata Ward 1898
†Cycadeoidea goucheriana Ward 1897
†Cycadeoidea heliochorea Ward 1900
†Cycadeoidea ingens Ward 1898
†Cycadeoidea insoleta Ward 1898
†Cycadeoidea jenneyana Ward 1894
†Cycadeoidea marshiana Ward 1898
†Cycadeoidea marylandica Fontaine 1889
†Cycadeoidea mcbridei Ward 1898
†Cycadeoidea mcgeeana Ward 1897
†Cycadeoidea megalophylla Buckland 1828
†Cycadeoidea minima Ward 1900
†Cycadeoidea minnekahtensis Ward 1898
†Cycadeoidea mirabilis Lesquereux 1875
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Invalid names: Cycadeoidea zamiostrobus Solms 1892 [synonym]
†Cycadeoidea munita Cragin 1889
†Cycadeoidea nana Ward 1898
†Cycadeoidea nigra Ward 1900
†Cycadeoidea occidentalis Ward 1898
†Cycadeoidea paynei Ward 1898
†Cycadeoidea protea Ward 1900
†Cycadeoidea pulcherrima Ward 1898
†Cycadeoidea reticulata Ward 1900
†Cycadeoidea rhombica Ward 1900
†Cycadeoidea stantoni Ward 1905
†Cycadeoidea stillwelli Ward 1898
†Cycadeoidea superba Ward 1900
†Cycadeoidea turrita Ward 1898
†Cycadeoidea tysoniana Ward 1897
†Cycadeoidea uddeni Wieland 1916
†Cycadeoidea uhleri Ward 1897
†Cycadeoidea wellsii Ward 1898
†Cycadeoidea wielandi Ward 1899
Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available
Age range: base of the Ladinian to the top of the Late/Upper Cenomanian or 241.46400 to 93.90000 Ma
Collections (15 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ladinian | Italy (Dolomites) | C. moroderi (24697) | |
| Bathonian - Callovian | Ukraine | C. sp. 1 (30961) | |
| Kimmeridgian - Tithonian | USA (Colorado) | Cycadeoidea indet. (11611) | |
| Tithonian | France | C. pumila, C. sp. (24516) | |
| Early/Lower Cretaceous | USA (South Dakota) | C. McBridei, C. Jenneyana, C. dacotensis, C. aspera, C. cicatricula, C. formosa, C. ingens, C. stillwelli (34835) C. dacotensis (34836) C. excelsa (34834) | |
| Cretaceous | USA (South Dakota) | C. Wellsii, C. insolita, C. dacotensis, C. colei, C. colossalis, C. furcata, C. jenneyana, C. marshiana, C. mcbridei, C. minnekahtensis, C. nana, C. occidentalis, C. paynei, C. pulcherrima, C. stillwelli, C. turrita (32048) C. dacotensis (32049) | |
| Late/Upper Aptian | USA (Maryland) | Cycadeoidea indet. (75478) | |
| Late/Upper Aptian | USA (California) | Cycadeoidea indet. (52034) | |
| Albian | USA (Kansas) | C. munita (29018) | |
| Early/Lower Albian - Late/Upper Albian | USA (Utah) | C. sp. (121688) | |
| Early/Lower Cenomanian | USA (Utah) | C. sp., C. medullara, C. cleavelandii (31193) | |
| Middle Cenomanian - Late/Upper Cenomanian | USA (Idaho) | C. sp. (121612) |