A new Early Pliocene record of the toothless walrus Valenictus (Carnivora, Odobenidae) from the Purisima Formation of Northern California
The walrus (Odobenus rosmarus) is a large tusked molluskivore that inhabits the Arctic and is the sole living member of the family Odobenidae. In contrast to the modern walrus, extinct walruses lived in temperate and even subtropical climates as far south as Baja California and Japan in the Pacific,...
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2017
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ftcdlib:qt53v080hx 2023-05-15T15:04:43+02:00 A new Early Pliocene record of the toothless walrus Valenictus (Carnivora, Odobenidae) from the Purisima Formation of Northern California Boessenecker, Robert W. 2017-06-15 application/pdf http://www.escholarship.org/uc/item/53v080hx english eng eScholarship, University of California qt53v080hx http://www.escholarship.org/uc/item/53v080hx public Boessenecker, Robert W.(2017). A new Early Pliocene record of the toothless walrus Valenictus (Carnivora, Odobenidae) from the Purisima Formation of Northern California. PaleoBios. Retrieved from: http://www.escholarship.org/uc/item/53v080hx Purisima Formation Santa Cruz California Pliocene Odobenidae Valenictus article 2017 ftcdlib 2018-06-08T22:51:24Z The walrus (Odobenus rosmarus) is a large tusked molluskivore that inhabits the Arctic and is the sole living member of the family Odobenidae. In contrast to the modern walrus, extinct walruses lived in temperate and even subtropical climates as far south as Baja California and Japan in the Pacific, and Florida and Morocco in the Atlantic. Multispecies walrus assemblages are now documented from several localities in the North Pacific, the center of origin for the family. The genus Valenictus is a toothless dense-boned walrus reported from several localities in southern California and Baja California. An isolated astragalus from lower Pliocene (5.33–4.89 Ma, Zanclean correlative) sediments of the Purisima Formation of northern California (Santa Cruz County, California) matches the highly derived morphology of Valenictus chulavistensis, and is identifiable as Valenictus sp. This specimen is the first record of Valenictus from the Purisima Formation and the first from northern California. Article in Journal/Newspaper Arctic Odobenus rosmarus walrus* University of California: eScholarship Arctic Baja Pacific |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
topic |
Purisima Formation Santa Cruz California Pliocene Odobenidae Valenictus |
spellingShingle |
Purisima Formation Santa Cruz California Pliocene Odobenidae Valenictus Boessenecker, Robert W. A new Early Pliocene record of the toothless walrus Valenictus (Carnivora, Odobenidae) from the Purisima Formation of Northern California |
topic_facet |
Purisima Formation Santa Cruz California Pliocene Odobenidae Valenictus |
description |
The walrus (Odobenus rosmarus) is a large tusked molluskivore that inhabits the Arctic and is the sole living member of the family Odobenidae. In contrast to the modern walrus, extinct walruses lived in temperate and even subtropical climates as far south as Baja California and Japan in the Pacific, and Florida and Morocco in the Atlantic. Multispecies walrus assemblages are now documented from several localities in the North Pacific, the center of origin for the family. The genus Valenictus is a toothless dense-boned walrus reported from several localities in southern California and Baja California. An isolated astragalus from lower Pliocene (5.33–4.89 Ma, Zanclean correlative) sediments of the Purisima Formation of northern California (Santa Cruz County, California) matches the highly derived morphology of Valenictus chulavistensis, and is identifiable as Valenictus sp. This specimen is the first record of Valenictus from the Purisima Formation and the first from northern California. |
format |
Article in Journal/Newspaper |
author |
Boessenecker, Robert W. |
author_facet |
Boessenecker, Robert W. |
author_sort |
Boessenecker, Robert W. |
title |
A new Early Pliocene record of the toothless walrus Valenictus (Carnivora, Odobenidae) from the Purisima Formation of Northern California |
title_short |
A new Early Pliocene record of the toothless walrus Valenictus (Carnivora, Odobenidae) from the Purisima Formation of Northern California |
title_full |
A new Early Pliocene record of the toothless walrus Valenictus (Carnivora, Odobenidae) from the Purisima Formation of Northern California |
title_fullStr |
A new Early Pliocene record of the toothless walrus Valenictus (Carnivora, Odobenidae) from the Purisima Formation of Northern California |
title_full_unstemmed |
A new Early Pliocene record of the toothless walrus Valenictus (Carnivora, Odobenidae) from the Purisima Formation of Northern California |
title_sort |
new early pliocene record of the toothless walrus valenictus (carnivora, odobenidae) from the purisima formation of northern california |
publisher |
eScholarship, University of California |
publishDate |
2017 |
url |
http://www.escholarship.org/uc/item/53v080hx |
geographic |
Arctic Baja Pacific |
geographic_facet |
Arctic Baja Pacific |
genre |
Arctic Odobenus rosmarus walrus* |
genre_facet |
Arctic Odobenus rosmarus walrus* |
op_source |
Boessenecker, Robert W.(2017). A new Early Pliocene record of the toothless walrus Valenictus (Carnivora, Odobenidae) from the Purisima Formation of Northern California. PaleoBios. Retrieved from: http://www.escholarship.org/uc/item/53v080hx |
op_relation |
qt53v080hx http://www.escholarship.org/uc/item/53v080hx |
op_rights |
public |
_version_ |
1766336446376968192 |