American Toad vs

Anaxyrus americanus compared with Chroomonas extensa

Key Differences

• American Toad is Least Concern while is Not Evaluated.

Taxonomic Classification

Rank	American Toad
Kingdom	Animalia (Animals)	Chromista (Chromista)
Phylum	Chordata (Chordates)	Cryptophyta
Class	Amphibia (Amphibians)	Cryptophyceae (Cryptophyceae)
Order	Anura (Frogs & Toads)	Pyrenomonadales (Pyrenomonadales)
Family	Bufonidae	Chroomonadaceae
Genus	Anaxyrus	Chroomonas
Species	Anaxyrus americanus	Chroomonas extensa

Conservation Status

American Toad

LC — Least Concern

NE — Not Evaluated

Physical Characteristics

Attribute	American Toad
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

American Toad

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in United States.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

American Toad

The American Toad (Anaxyrus americanus) is a species in the genus Anaxyrus. It is currently classified as Least Concern on the IUCN Red List. Typically found in freshwater habitats, moist forests, and wetlands.

Chroomonas extensa is a species of cryptophyte alga in the family Chroomonadaceae, documented from freshwater environments in Europe. The specific epithet extensa refers to an extended or elongated cell morphology relative to other Chroomonas species. Cell shape and proportions are important diagnostic characters within the genus Chroomonas, where species are distinguished by cell dimensions, color, flagellar arrangement, and the structure of the ejectosomes — coiled proteinaceous organelles unique to cryptophytes that can be discharged rapidly, perhaps for predator avoidance. Cryptophytes of the genus Chroomonas are important primary producers in freshwater phytoplankton communities, particularly in cold-water periods when they may contribute substantially to total algal biomass. They are also important food sources in microbial food webs, supporting populations of heterotrophic flagellates and ciliates that consume them and transfer energy to higher trophic levels. Chroomonas extensa has been recorded from European freshwater localities. Like other microalgal species, it has not been assessed by the IUCN under formal conservation criteria.