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Cycadeospermum
Taxonomy
Cycadeospermum was named by Saporta (1874). It is not extant. Its type is Cycadeospermum hettangense.
It was assigned to Cycadaceae by Knowlton (1919); to Bennettitales by Berry (1922); and to Cycadophyta by Andrews (1970), Lakhanpal et al. (1976).
It was assigned to Cycadaceae by Knowlton (1919); to Bennettitales by Berry (1922); and to Cycadophyta by Andrews (1970), Lakhanpal et al. (1976).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1874 | Cycadeospermum Saporta |
| 1919 | Cycadeospermum Knowlton |
| 1922 | Cycadeospermum Berry |
| 1970 | Cycadeospermum Andrews |
| 1976 | Cycadeospermum Lakhanpal 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. †Cycadeospermum Saporta 1874
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†Cycadeospermum acutum Fontaine 1889
†Cycadeospermum angustum Fontaine 1889
†Cycadeospermum californicum Fontaine 1905
†Cycadeospermum columnare Lesquereux 1891
†Cycadeospermum hettangense Saporta 1874
†Cycadeospermum indicum Gupta 1954
†Cycadeospermum lineatum Lesquereux 1891
†Cycadeospermum marylandicum Berry 1911
†Cycadeospermum montanense Fontaine 1905
†Cycadeospermum obovatum Fontaine 1889
†Cycadeospermum oregonense Fontaine 1905
†Cycadeospermum ovatum Fontaine 1905
†Cycadeospermum rotundatum Fontaine 1889
†Cycadeospermum spatulatum Fontaine 1889
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Invalid names: Cycadeospermum ellipticum Fontaine 1889 [synonym]
†Cycadeospermum wanneri Fontaine 1900
Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available
Age range: base of the Late/Upper Oxfordian to the top of the Paleocene or 157.90000 to 56.00000 Ma
Collections (19 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Jurassic | India (Jharkhand) | C. indicum (224762) | |
| Late/Upper Oxfordian | France | C. pomelii (24397) | |
| Tithonian | France | C. wimillense (24516) | |
| Early/Lower Cretaceous | USA (Wyoming) | C. rotundatum (34839) | |
| Early/Lower Cretaceous | Netherlands | C. ? A (34039) | |
| Cretaceous | Belgium (South Limburg) | C. ? B (34040) | |
| Albian | USA (Oregon) | C. lineatum (229463) | |
| Albian | USA (Kansas) | C. lineatum (29018 102716 102722) | |
| Paleocene | Netherlands | C. rotundum (33998 33999 34000 34001 34002 34004) | |
| Paleocene | Belgium | C. rotundum (34003 34036 34037) |