Bigtooth river stingray vs common greasewort

Potamotrygon henlei compared with Aneura pinguis

Taxonomic Classification

Rank	Bigtooth river stingray	common greasewort
Kingdom	Animalia (สัตว์)	Plantae (พืช)
Phylum	Chordata (สัตว์มีแกนสันหลัง)	Marchantiophyta (ลิเวอร์เวิร์ต)
Class	Elasmobranchii	Jungermanniopsida (Jungermanniopsida)
Order	Myliobatiformes (อันดับปลากระเบน)	Metzgeriales (Metzgeriales)
Family	Potamotrygonidae	Aneuraceae
Genus	Potamotrygon	Aneura
Species	Potamotrygon henlei	Aneura pinguis

Conservation Status

Bigtooth river stingray

LC — Least Concern

common greasewort

LC — Least Concern

Physical Characteristics

Attribute	Bigtooth river stingray	common greasewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bigtooth river stingray

common greasewort

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (United States), and South America (Brazil, Colombia).

Bigtooth river stingray

The Bigtooth river stingray (Potamotrygon henlei) is a species in the genus Potamotrygon. It is currently classified as Least Concern on the IUCN Red List.

common greasewort

<em>Aneura pinguis</em>, commonly known as common greasewort, is a liverwort belonging to the genus Aneura within the family Aneuraceae. This cryptogamic plant inhabits ecosystems across Asia, Europe, and North America, thriving in moist or waterlogged environments. Its range encompasses Taiwan in Asia, six European countries, the United States in North America, and Brazil and Colombia in South America, indicating a broad geographic distribution across multiple continents. Common greasewort is assessed as Least Concern on the IUCN Red List. The species typically forms flat, ribbon-like thalli in damp habitats such as stream banks, wet rocks, and boggy ground. Biological traits of this species remain poorly documented in the scientific literature.