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Sequoia affinis information


Sequoia affinis
A fossilized S. affinis branchlet, Eocene.
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Pinophyta
Class: Pinopsida
Order: Cupressales
Family: Cupressaceae
Genus: Sequoia
Species:
S. affinis
Binomial name
Sequoia affinis
Lesq.

Sequoia affinis is an extinct[1] species of the genus Sequoia in the cypress family Cupressaceae.

The name Sequoia sometimes refers to the subfamily Sequoioideae, which includes the still-living Sequoia sempervirens along with Sequoiadendron (giant sequoia) and Metasequoia (dawn redwood). On its own, the term redwood usually refers to the coast redwood (Sequoia sempervirens), and not to species in the other genera.

There are many Sequoia fossils found at the Florissant fossil beds in Florissant, Colorado, including Sequoia affinis.[2] A trio of Sequoia affinis fossilized stumps—believed to be three basal shoot clones of one original parent tree—has been reconstructed at this site.[3]

Many branches of fossil Sequoia from Florissant have foliage with spreading leaves, which is also common in the modern Sequoia. The leaves in the fossil species, however, are usually thinner and more delicate. An example of the leaves of Sequoia affinis has been featured on a postcard in a series on "Tertiary Fossil Plants," issued by the British Museum of Natural History in the early 1920s. It has also been suggested that Sequoia affinis may be ancestral to both Sequoia sempervirens and Sequoiadendron giganteum (Sierra redwood).[2]

Typically the female cones of Sequoia affinis are only 50-70% of the length of modern redwood cones. This information, paired with other differences in the wood, foliage, and pollen, show the distinction between Sequoia affinis and Sequoia sempervirens.[2]

Fossilized Sequoia affinis pollen has been discovered in lake-sediment shale at the site in Florissant, Colorado.[3]

  1. ^ Gregory, KM (1992). Late Eocene paleoelevation, paleoclimate, and paleogeography of the Front Range region, Colorado (Thesis). University of Arizona.
  2. ^ a b c Meyer, Herbert W (2003). The Fossils of Florissant. Smithsonian books. pp. 84–87. ISBN 9781588341075.
  3. ^ a b "Sequoia affinis Reconconstruction". Florissant Fossil Beds National Monument (U.S. National Park Service). 2022-01-25. Retrieved 2022-05-31.

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Sequoia affinis

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Sequoia affinis is an extinct species of the genus Sequoia in the cypress family Cupressaceae. The name Sequoia sometimes refers to the subfamily Sequoioideae...

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Florissant Formation

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List of the prehistoric life of Colorado

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†Sciophila Sciurus Scolytus †Segestria †Selaginella †Semanotus SequoiaSequoia affinis Serica †Sespia †Sialia †Sibinia †Sifrhippus Sigmodon †Silpha †Silvius...

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List of the Cenozoic life of Colorado

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locality for species †Senoprosopis romeri – type locality for species SequoiaSequoia affinis Serica †Serica antediluviana – type locality for species †Serica...

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Paleobiota of the Klondike Mountain Formation

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†Senoprosopis †Senoprosopis beckeri – type locality for species SequoiaSequoia affinis †Sespemys – tentative report †Simoedosaurus †Simpson †Simpson lists...

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Scapanus †Scapanus townsendii – or unidentified related form Sciara SequoiaSequoia affinis †Sequoiadendron †Sequoiadendron chaneyi †Simocyon †Smilax †Smilodon...

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Allenby Formation

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Paleontology. 12: 245–258. Chaney, R.W. (1951). "A revision of fossil Sequoia and Taxodium in western North America based on the recent discovery of...

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Paleoflora of the Eocene Okanagan Highlands

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latimanus Scaphander †Schisandra Schizaster Sciurus †Scutella Semele SequoiaSequoia affinis Siliqua †Siliqua patula †Simocetus – type locality for genus †Simocyon...

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Mountain Formation fossil Metasequoia †Metasequoia occidentalis SequoiaSequoia affinis Taiwania Undescribed Ypresian Klondike Mountain Formation fossil...

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related form Sciara †Sciara sepulta – type locality for species SequoiaSequoia affinis †Sequoiadendron †Sequoiadendron chaneyi †Simocyon †Simocyon primigenius...

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affinis – type locality for species †Scutella †Scutella gabbi Searlesia – tentative report †Searlesia carlsoni Semele †Semele willamettensis Sequoia †Sequoia...

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†Scaphohippus †Scotiophryne – or unidentified comparable form †Selaginella SequoiaSequoia affinis †Simoedosaurus †Simpson †Smilax †Sophora †Sorbus †Sparganium Spea...

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Astrodon

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turtles including Glyptops caelatus, and the crocodyliform Goniopholis affinis. Evidence has shown that the multituberculate early mammal Argillomys marylandensis...

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cypress pine †Cupressinites spp. Libocedrus adpressa †Quasisequoia sp. Sequoia couttsiae Widdringtonia sp. – African cypresses Podocarpaceae Afrocarpus...

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Podocarpus

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Wasscher section Gracilis (southern China, across Malesia to Fiji) Podocarpus affinis Seem. Podocarpus glaucus Foxw. Podocarpus pilgeri Foxw. Podocarpus ramosii...

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Nageia

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Retrophyllum Sundacarpus N. acutifolia — Podocarpus acutifolius N. affinis — Podocarpus affinis N. alpina — Podocarpus lawrencei N. amara — Sundacarpus amarus...

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coffeiformis (Ag.) Kutz. Amphora normanii var. normanii Rabh. Amphora ovalis var. affinis (Kutz.) V.H. ex DeT. Amphora ovalis var. pediculus (Kutz.) V.H. ex DeT...

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golden shiner (Notemigonus crysoleucas), western mosquitofish (Gambusia affinis), bluegill (Lepomis macrochirus), black (Pomoxis nigromaculatus) and white...

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