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Pterospermites
Taxonomy
Pterospermites was named by Heer (1859). It is not extant. Its type is Pterospermites vagans.
It was assigned to Sterculiaceae by Knowlton (1899), Knowlton (1919) and Liu et al. (1996).
It was assigned to Sterculiaceae by Knowlton (1899), Knowlton (1919) and Liu et al. (1996).
Species
P. alaskana, P. carolinensis, P. credneriifolius, P. cupanioides, P. dentatus, P. grandidentatus, P. haguei, P. longeacuminatus, P. magnifolia, P. minor, P. modestus, P. neomexicanus, P. nervosus, P. obovatus, P. spectabilis, P. sternbergii, P. undulatus, P. vagans (type species), P. wardii, P. whitei
Synonymy list
| Year | Name and author |
|---|---|
| 1859 | Pterospermites Heer |
| 1899 | Pterospermites Knowlton |
| 1919 | Pterospermites Knowlton |
| 1996 | Pterospermites Liu 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. †Pterospermites Heer 1859
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†Pterospermites alaskana Knowlton 1904
†Pterospermites carolinensis Berry 1907
†Pterospermites credneriifolius Berry 1907
†Pterospermites cupanioides Newberry 1868
†Pterospermites dentatus Heer 1868
†Pterospermites grandidentatus Lesquereux 1888
†Pterospermites haguei Knowlton 1899
†Pterospermites longeacuminatus Lesquereux 1891
†Pterospermites magnifolia Knowlton 1904
†Pterospermites minor Ward 1885
†Pterospermites modestus Lesquereux 1891
†Pterospermites neomexicanus Knowlton 1916
†Pterospermites nervosus Knowlton 1918
†Pterospermites obovatus Newberry 1896
†Pterospermites spectabilis Heer 1869
†Pterospermites sternbergii Lesquereux 1872
†Pterospermites undulatus Knowlton 1900
†Pterospermites vagans Heer 1859
†Pterospermites wardii Knowlton 1900
†Pterospermites whitei Ward 1885
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 2009 | |||||
Age range: base of the Lancian to the top of the Middle Eocene or 70.60000 to 37.71000 Ma
Collections (15 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Lancian | USA (North Dakota) | P. cordata (25414 25445 25468 25914 48191 48268) | |
| Puercan | USA (North Dakota) | P. cordata (25446 25453 25454 25466 25469 48177) | |
| Paleocene | China (Xinjiang) | P. auriculaecordatus, P. macarangoides, P. peltatifolius, P. sp. (223851) | |
| Early/Lower Eocene | Canada (British Columbia) | P. alaskana (227797) | |
| Middle Eocene | USA (Wyoming) | P. haguei (35583) |