Common Boulder Lichen vs Epaulard

Porpidia macrocarpa compared with Orcinus orca

Key Differences

Common Boulder Lichen is Near Threatened while Epaulard is Data Deficient.

Taxonomic Classification

Rank	Common Boulder Lichen	Epaulard
Kingdom	Fungi (เห็ดรา)	Animalia (สัตว์)
Phylum	Ascomycota (Sac Fungi)	Chordata (สัตว์มีแกนสันหลัง)
Class	Lecanoromycetes (Lecanoromycetes)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Lecideales (Lecideales)	Cetacea (Whales & Dolphins)
Family	Lecideaceae	Delphinidae (Oceanic Dolphins)
Genus	Porpidia	Orcinus (Orcas)
Species	Porpidia macrocarpa	Orcinus orca

Conservation Status

Common Boulder Lichen

NT — Near Threatened

Epaulard

DD — Data Deficient

Population: ~50.0K

Trend: Unknown ?

Physical Characteristics

Attribute	Common Boulder Lichen	Epaulard
Diet	—	Carnivore
Average Lifespan	—	50 years
Average Length	—	8.0 m
Average Weight	—	5.4 t

Habitat & Geographic Range

Common Boulder Lichen

Habitat

Native to Europe and North America and South America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Colombia). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Epaulard

Habitat

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 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Colombia, Ecuador, Venezuela).

Common Boulder Lichen

The common boulder lichen (<em>Porpidia macrocarpa</em>) is a crustose lichen species with a wide distribution across Europe and the Americas, recorded in Colombia, Denmark, Norway, Portugal, Sweden, and the United States. This species typically inhabits siliceous rock surfaces in a variety of exposed terrestrial environments across both North and South America and Europe. The common boulder lichen is classified as Near Threatened on the IUCN Red List, suggesting that its populations face potential pressures and require monitoring. As a slow-growing crustose lichen, it often colonizes hard rock substrates including granite and quartzite, forming a close symbiotic relationship between its fungal and algal components. It plays an important role in the early stages of soil formation through the gradual weathering of rock surfaces. Biological traits of this species remain poorly documented in the scientific literature.

Epaulard

The largest member of the dolphin family, orcas reach up to 9 meters and 6 tonnes and are found in every ocean from Arctic to Antarctic. Apex predators living in matrilineal pods with distinct dialects, hunting strategies, and cultural traditions that differ between populations. Some populations specialize in fish, others in marine mammals. No natural predators; orcas sit at the top of every marine food chain they inhabit.