Peltandra primaeva
In today's world, Peltandra primaeva is a topic that has gained great relevance and has captured the attention of different sectors of society. Since its appearance, Peltandra primaeva has marked a before and after in the way we interact, live and perceive the world around us. Over time, Peltandra primaeva has become a topic of debate and discussion in different areas, generating conflicting opinions and triggering actions that have impacted people's lives. Therefore, it is crucial to analyze and understand in depth the impact that Peltandra primaeva has had on our lives, as well as on the development of society as a whole. In this article, we will explore some facets of Peltandra primaeva and its influence on various aspects of daily life, in order to provide a broader and more comprehensive view on this vitally important topic.
| Peltandra primaeva Temporal range:
| |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Alismatales |
| Family: | Araceae |
| Genus: | Peltandra |
| Species: | †P. primaeva
|
| Binomial name | |
| †Peltandra primaeva Hickey, 1977
| |
Peltandra primaeva is an extinct species of monocot in the family Araceae known from a Ypresian age Eocene fossil found in western North Dakota, USA.[1]
The species was described from a single leaf specimen found at the White Butte locality, USNM number 14048. This locality is placed in the Camels Butte member of the Golden Valley Formation.[1] The Camels Butte member outcrops at a number of sites in western North Dakota, and is designated the type locality.[1]
The holotype specimen, number USNM 43184, is preserved in the National Museum of Natural History collections of the Smithsonian Institution.[1] The single specimen was studied by paleobotanist Leo J. Hickey of the Yale University Geology Department. Hickey published the 1977 type description for P. primaeva in the Geological Society of America memoir 150, Stratigraphy and Paleobotany of the Golden Valley Formation (Paleogene) of Western North Dakota.[1] Hickey chose the specific name primaeva, noting the species to be the first and only megafossil record for the genus Peltandra described.[1]
The holotype of Peltandra primaeva is a distal leaf portion displaying a short slightly pointed tip. The preserved section shows a distinct pattern of veins running parallel to the margin with reticulation in the veins forming abaxially. The only modern member of Araceae to show this structuring is Peltandra, hence the placement in the genus. Unlike the modern species P. primaeva, it has between eight and ten veins parallel to the margin and forms a 3.5 to 6 millimetres (0.14 to 0.24 in) costal zone which is larger than in modern species. The preservation of the fossil suggests the leaf would have been chartaeous, thin and paper-like, in life.[1]
References
- ^ a b c d e f g Hickey, Leo (1977). Stratigraphy and Paleobotany of the Golden Valley Formation (Paleogene) of Western North Dakota. Boulder, Colorado: Geological Society of America. pp. 110 & Plate 5. ISBN 0-8137-1150-9.