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Czekanowskia
Taxonomy
Czekanowskia was named by Heer (1876). It is not extant. Its type is Czekanowskia setacea.
It was assigned to Coniferales by Knowlton (1919); to Ginkgophyta by Andrews (1970) and Lakhanpal et al. (1976); and to Czekanowskiales by Vavrek et al. (2007) and Sun et al. (2009).
It was assigned to Coniferales by Knowlton (1919); to Ginkgophyta by Andrews (1970) and Lakhanpal et al. (1976); and to Czekanowskiales by Vavrek et al. (2007) and Sun et al. (2009).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1876 | Czekanowskia Heer |
| 1919 | Czekanowskia Knowlton |
| 1970 | Czekanowskia Andrews |
| 1976 | Czekanowskia Lakhanpal et al. |
| 2007 | Czekanowskia Vavrek et al. |
| 2009 | Czekanowskia Sun 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. †Czekanowskia Heer 1876
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†Czekanowskia capillaris Newberry 1895
†Czekanowskia dichotoma Heer 1868
†Czekanowskia nervosa Heer 1881
†Czekanowskia setacea Heer 1876
Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available
Age range: base of the Early/Lower Triassic to the top of the Early/Lower Aptian or 252.17000 to 122.46000 Ma
Collections (422 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Triassic | Russian Federation | C. sp. 1 (30489) | |
| Anisian - Ladinian | Mongolia | C. sp. 1 (30297) | |
| Carnian | Japan (Yamaguchi) | C. sp. 1, C. sp. 2, C. sp. 3 (30209) | |
| Carnian - Norian | Russian Federation | C. sp. 1 (30742) C. sp. 1, C. sp. 2 (30511) | |
| Carnian - Norian | China (Jilin) | C. sp. 1 (29589) | |
| Carnian - Norian | China (Xinjiang) | C. sp. 1 (30016) | |
| Late/Upper Triassic | Russian Federation | C. sp. 1 (30422) | |
| Late/Upper Triassic | Argentina (Neuquen) | C. sp. 1 (29403 29411) | |
| Late/Upper Triassic | Greenland | C. nathorsti (23943 23944 23946) | |
| Carnian - Rhaetian | Russian Federation | C. sp. 1 (30737) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Tithonian - Barremian | Russian Federation | C. sp. 1, C. sp. 2 (30386) | |
| Neocomian | Canada (British Columbia) | C. sp. (41192) | |
| Neocomian - Barremian | Canada (British Columbia) | C. rigida (24786) | |
| Neocomian - Barremian | Canada (Alberta) | C. rigida (24847) | |
| Neocomian - Albian | Canada (British Columbia) | C. sp. (41193) | |
| Cretaceous | USA (Wyoming) | C. nervosa (32032 32045) | |
| Late/Upper Barremian - Early/Lower Aptian | China (Liaoning) | C. rigida (36969 73687) C. sp. 1 (29690) | |
| Barremian - Aptian | Kazakhstan | C. sp. 1 (30223) | |
| Aptian | Russian Federation (Buryatia) | C. sp. (122549) | |
| Aptian | Mongolia | C. sp. (138728) | |