Coelacanth vs koala
Latimeria chalumnae compared with Phascolarctos cinereus
Key Differences
- Coelacanth is Critically Endangered while koala is Vulnerable.
- Coelacanth is carnivore while koala is herbivore.
- Coelacanth is 8.0x heavier than koala.
- Coelacanth lives longer (100 years vs 15 years).
Taxonomic Classification
| Rank | Coelacanth | koala |
|---|---|---|
| Kingdom same | Animalia (動物) | Animalia (動物) |
| Phylum same | Chordata (脊索動物) | Chordata (脊索動物) |
| Class | Coelacanthi (Coelacanthi) | Mammalia (哺乳類) |
| Order | Coelacanthiformes (シーラカンス) | Diprotodontia (カンガルー目) |
| Family | Latimeriidae | Phascolarctidae (Koalas) |
| Genus | Latimeria | Phascolarctos (Koalas) |
| Species | Latimeria chalumnae | Phascolarctos cinereus |
Evolutionary Relationship
Coelacanth and koala share a common ancestor at the Phylum level: Chordata. (脊索動物)
Conservation Status
Coelacanth
CR — Critically EndangeredPopulation: ~500
Trend: Decreasing ↓
koala
VU — VulnerablePopulation: ~100.0K
Trend: Decreasing ↓
Physical Characteristics
| Attribute | Coelacanth | koala |
|---|---|---|
| Diet | Carnivore | Herbivore |
| Average Lifespan | 100 years | 15 years |
| Average Length | 1.8 m | 75 cm |
| Average Weight | 80.0 kg | 10.0 kg |
Habitat & Geographic Range
Coelacanth
Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 8 distinct biome types spanning the Australasia and Afrotropic and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.
Distributed across Comoros, Indonesia, Mozambique, and South Africa. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.
koala
Typically found in grasslands, forests, and vegetated habitats.
Found in Australia. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.
Coelacanth
1938年に南アフリカ沖で再発見されるまで6,500万年間絶滅していたと考えられていた生きた化石であるシーラカンスは、2メートル、90kgに達することができます。この種は条鰭類よりも四足動物に近い古代の肉鰭類の系統に属しており、脊椎動物の進化を理解する上で科学的に非常に重要です。インド洋の深い岩礁生息地に生息し、夜行性で体内受精により完全に形成された幼魚を産みます。絶滅危惧IA類(CR)種です。
koala
オーストラリア東部・南東部を代表する有袋類で、体重は最大15kgに達し、低カロリーのユーカリの葉食から得るエネルギーを節約するために1日最大22時間を睡眠に費やす。他の哺乳類の多くを死に至らしめる有毒なユーカリ成分を処理するために高度に特化しており、解毒に特別に適応した腸内微生物叢を持つ。クラミジア感染症、生息地の伐採、気候変動により個体数が激減し、2022年に絶滅危惧種に指定された。
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