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Penosphyllum cordatum
Taxonomy
Pterospermites cordatus was named by Ward (1885). It is not extant. Its type specimen is USNM 4201, a leaf.
It was recombined as Penosphyllum cordatum by Hickey (1977).
It was recombined as Penosphyllum cordatum by Hickey (1977).
Synonymy list
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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.
†Penosphyllum cordatum Ward 1885
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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 Early/Lower Paleocene to the top of the Clarkforkian or 66.00000 to 54.90000 Ma
Collections (15 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Paleocene | USA (North Dakota) | Penosphyllum cordatum (129230) | |
| Paleocene | USA (North Dakota) | Pterospermites cordatus (58023) | |
| Paleocene | USA (Montana) | Pterospermites cordatus (40094 40745 53538) | |
| Paleocene | USA (New Mexico) | Pterospermites cordatus (43147) | |
| Paleocene | USA (Colorado) | Pterospermites cordatus (39895 39899) | |
| Paleocene | USA (Wyoming) | Pterospermites cordatus (57968 57990 57996) | |
| Clarkforkian | USA (North Dakota) | Penosphyllum cordatum (10811) | |
| Clarkforkian | USA (Wyoming) | Penosphyllum cordatum (11352) | |
| Graybullian | USA (Wyoming) | Penosphyllum cordatum (11371) | |
| Early/Lower Eocene | USA (Colorado) | Pterospermites cordatus (53070) |