Family
Ursidae
8 species in 5 genera. Maximum lifespan ranges from 33.3 years (Sloth bear) to 43.8 years (Polar bear).
Species
8
with a complete mtDNA
Median GC
41.1%
Range 38.8–41.7%
Genera
5
Largest: Ursus (4)
Overview
The Ursidae tree
Select a clade to look insideOuter ring: Maximum lifespan, log scale
Each ring is one rank. Scroll or use + and − to zoom, drag to move; select a group to zoom into it, a species to open it.
Genera of Ursidae
5 genera, by species countWhere Ursidae sit among 2,335 species
Whole-genome GC content against maximum lifespan. Hover or tap a point; select it again to open the species.
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- Ursidae (8)
- Other species
Longest-lived
Top 5 and the shortest-livedSpecies in Ursidae
Select a column to sort| Ursus maritimus | Polar bear | 43.8 yr | 17,017 bp | 41.36% |
| Ursus arctos | Brown bear | 40 yr | 17,020 bp | 41.31% |
| Ursus thibetanus | Asiatic black bear | 39.2 yr | 16,795 bp | 40.95% |
| Tremarctos ornatus | Spectacled bear | 39 yr | 16,766 bp | 41.36% |
| Ailuropoda melanoleuca | Giant panda | 36.8 yr | 16,805 bp | 38.79% |
| Helarctos malayanus | Sun bear | 35.9 yr | 16,783 bp | 40.95% |
| Ursus americanus | American black bear | 34 yr | 16,841 bp | 40.60% |
| Melursus ursinus | Sloth bear | 33.3 yr | 16,817 bp | 41.71% |