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A Pollen Key for Quaternary Paleontology

Explore the relevance of pollen in Quaternary paleontology using key plant species and their unique pollen characteristics favored by different climates. From Amaranthus to Poaceae, grasp the importance of these indicators in understanding ancient environments.

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A Pollen Key for Quaternary Paleontology

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  1. A Pollen Key for Quaternary Paleontology

  2. Amaranthus • - Spherical • - Periporate • - Exine: Scabrate to Psilate • Favors warmer climates Amaranthus, pigweed, is a genus of herbs.

  3. Ambrosia • Spherical • Exine: Echinate (short spines) • - Favors warm, temperate climates Ragweeds (Ambrosia), also called bitterweeds and bloodweeds, are a genus of flowering plants from the sunflower family (Asteraceae)

  4. Eriogonum • Prolate • Colporate • Exine: Reticulate • Favors colder climates Eriogonum is the genus known as Wild Buckwheat.

  5. Sarcobatus • Spherical • Periporate (fewer porates than • amaranthus) • Exine: Psilate • Favors warmer and dryer • climates Greasewood (Sarcobatus) is a genus from desert areas of western North America

  6. Juniperus- Spherical to Elliptical- no obvious aperture (inaperatuate)- Exine: Gemmate- Typically looks like “Pac Man” in fossil form- Favors warmer climates Junipers are coniferous plants in the genus Juniperus of the cypress family.

  7. Quercus- Prolate- tricolpate- Exine: Verrucate- Favors warmer climates Quercus is the genus for oak trees

  8. Picea • Vesiculate • - Reticulum Bladders • The cap exine is a verrucate • texture • - Favors cold climates A spruce is a tree of the genus Picea, a genus of about 35 species of coniferous evergreen coniferous trees in the Family Pinaceae, found in the northern temperate or boreal regions.

  9. Pinus • Bisaccate • Sculptural Element? • Has a pronounced lateral • line giving the impression of • a cap sitting on top of the • body portion • Favors moderate climates • (transitional) Pines are coniferous trees in the genus Pinus, in the family Pinaceae

  10. Artemisia • Tricolporate • Broad-based, low pointed spines • Favors moderate climates • (transitional) Artemisia is a large, diverse genus of plants belonging to the daisy family Asteraceae. It consists of herbs and shrubs that grow in temperate climates, usually in dry or semi-dry habitats.

  11. Poaceae (Graminae) Poaceae (Graminae) Poaceae (Graminae) Poaceae (Graminae) This family includes food crops, turf • Poaceae • Spherical • Monoporate (looks like a • microscopic cantaloupe) • Exine: Scabrate to Psilate • A hardy family of plants that • favors moderate climates • (transitional) Poaceae or Gramineae is a family of flowering plants, usually called grasses. Grass species also occur in many other habitats, including wetlands, forests and tundra. They inculde wheat, corn, and rice.

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