Ecology

Habitat

Depth range based on 25 specimens in 1 taxon.
Water temperature and chemistry ranges based on 10 samples.

Environmental ranges
  Depth range (m): 0 - 0
  Temperature range (°C): 0.297 - 0.745
  Nitrate (umol/L): 0.703 - 2.388
  Salinity (PPS): 32.124 - 32.916
  Oxygen (ml/l): 7.926 - 8.105
  Phosphate (umol/l): 0.529 - 0.576
  Silicate (umol/l): 1.929 - 4.631

Graphical representation

Temperature range (°C): 0.297 - 0.745

Nitrate (umol/L): 0.703 - 2.388

Salinity (PPS): 32.124 - 32.916

Oxygen (ml/l): 7.926 - 8.105

Phosphate (umol/l): 0.529 - 0.576

Silicate (umol/l): 1.929 - 4.631
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Associations

Known prey organisms

Ursus preys on:
Castor canadensis

This list may not be complete but is based on published studies.
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                        
Specimen Records:385Public Records:229
Specimens with Sequences:358Public Species:6
Specimens with Barcodes:280Public BINs:5
Species:7         
Species With Barcodes:6         
          
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Source: Barcode of Life Data Systems (BOLD)

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Barcode data

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Source: Barcode of Life Data Systems (BOLD)

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Locations of barcode samples

Collection Sites: world map showing specimen collection locations for Ursus

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Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Ursus (genus)

Ursus is a genus in the family Ursidae (bears) that includes the widely distributed brown bears,[3] the polar bear,[4] and black bears. The name is derived from the Latin ursus, meaning bear.[5][6]

Species and subspecies of Ursus[edit]

A hybrid between grizzly bears and polar bears has also been recorded (known commonly as a pizzly, prizzly or grolar bear). The official name is a grizzly–polar bear hybrid.

References[edit]

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Ursus etruscus

Ursus etruscus (Etruscan bear) is an extinct species of mammal of the family Ursidae (bears), endemic to Europe, Asia and North Africa during the Pliocene through Pleistocene, living from ~5.3 Mya—11,000 years ago, existing for approximately 5.289 million years.

Ursus etruscus appears to have come from Ursus minimus and gave rise to the brown bear, Ursus arctos, and the cave bear, Ursus spelaeus. The range of Ursus etruscus is mostly continental Europe with specimens also recovered in the Great steppe region of Eurasia. The latest fossil evidence for Ursus etruscus was recovered in Israel, Croatia, and Toscana, Italy dating at 1.8 Mya to 11,000 years.

Some scientists have proposed that the early, small variety of U. etruscus of the middle Villafranchian era survives in the form of the modern Asian black bear.[1]

Morphology[edit]

Skull

Not unlike the brown bears of Europe in size, it had a full complement of premolars, a trait carried from the genus Ursavus.

Fossil distribution[edit]

Sites and specimen ages:

References[edit]

  1. ^ Aspects of Evolution and Adaptation in American Black Bears (Ursus americanus Pallas) and Brown and Grizzly Bears (U. arctos Linne.) of North America, Stephen Herrero, Research Associate, Environmental Sciences Centre (Kananaskis), and Assistant Professor, Department of Biology and Psychology, University of Calgary, Alberta.
  2. ^ Paleobiology Database: Mestas de Con, Cangas de Onis collection
  3. ^ Paleobiology Database: Strmica collection
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