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A French kiss, also known as cataglottism or a tongue kiss, is an amorous kiss in which the participants' tongues extend to touch each other's lips or...

Among animals which produce eggs, the yolk (/ˈjoʊk/; also known as the vitellus) is the nutrient-bearing portion of the egg whose primary function is to...

The four-toed hedgehog (Atelerix albiventris), also known as the African pygmy hedgehog, is a species of hedgehog found throughout much of central and...

Solidago, commonly called goldenrods, is a genus of about 100 to 120 species of flowering plants in the family Asteraceae. Most are herbaceous perennial...

A symporter is an integral membrane protein that is involved in the transport of two (or more) different molecules across the cell membrane in the same...

Indigofera tinctoria, also called true indigo, is a species of plant from the bean family that was one of the original sources of indigo dye. True indigo...

The Pacific saury (Cololabis saira) is species of fish in the family Scomberesocidae. Saury is a seafood in several East Asian cuisines and is also known...

Antofagastia is an extinct genus of Notoungulate, belonging to the family Interatheriidae. It lived during the Late Eocene in what is today South America...

Macroglossus (nectar bat) is a genus of megabats (family Pteropodidae) found in Indonesia and Southeast Asia. It has two species: Long-tongued nectar bat...

Pericotoxodon is an extinct genus of toxodontid notoungulate, from the Miocene period. Fossils of Pericotoxodon were found near Río Inuya and Mapuya in...

The red-bellied short-necked turtle (Emydura subglobosa), also known commonly as the pink-bellied side-necked turtle and the Jardine River turtle, is a...

Molinodus is an extinct genus of mammal of uncertain affinities, whose fossils were found at Tiupampa, in Bolivia, in terrains dated from the Paleocene...

Andrea Cesalpino (Latinized as Andreas Cæsalpinus) (1524/1525 – 23 February 1603) was a Florentine physician, philosopher and botanist. In his works he...

Hand pollination, also known as mechanical pollination is a technique that can be used to pollinate plants when natural or open pollination is either undesirable...

Elmerriggsia is an extinct genus of Notoungulate, belonging to the family Leontiniidae. It lived during the Late Oligocene in South America. This animal...

Johnbell is an extinct genus of ungulates in the family Interatheriidae. The only known species belonging to the genus is Johnbell hatcheri. This animal...

Punahyrax is an extinct genus of placental mammal belonging to the family Archaeohyracidae, within the order Notoungulata, and endemic of South America...

Acoelodus is an extinct genus of placental mammal, belonging to the order Notoungulata. The genus was first described by Florentino Ameghino in 1897. Its...

Ignigena is an extinct genus of notoungulate belonging to the family Interatheriidae. The only known species of this genus is Ignigena minisculus. The...

Baguatherium is an extinct genus of herbivorous mammal, belonging to the order Pyrotheria. It lived during the Early Oligocene, and its fossilized remains...