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Planorbarius corneus, common name the great ramshorn, is a relatively large species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails, or planorbids, which all have sinistral or left-coiling shells.
Giraffidae: Giraffids have a pair of skin covered bony bumps on their heads, called ossicones. Cervidae: Most deer have antlers, which are not true horns due to lacking a bone core and made of keratin. Rhinocerotidae: The "horns" of rhinos are made of keratin and lack a bone core.
A pair of horns on a male impala Anatomy of an animal's horn. A horn is a permanent pointed projection on the head of various animals that consists of a covering of keratin and other proteins surrounding a core of live bone. Horns are distinct from antlers, which are not permanent.
Ram’s horn or ram horn usually refers to the spiral bony projection grown on the head of a male sheep (ram). It may also refer to: Ram's Horn (restaurant), a restaurant chain based in Detroit, Michigan, US; Ram's horn (shoe), or pigache, a type of shoe with a long, pointed, turned up toe; Bukkehorn, an ancient Scandinavian musical instrument
Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod molluscs.Unlike most molluscs, the blood of ram's horn snails contains iron-based hemoglobin instead of copper-based hemocyanin. [3]
[1] [2] The hippocampus is described in three regions, a head, body, and tail. The head is the expanded part near to the temporal lobe. The structure was named the hippocampus after its resemblance to a seahorse. Its general structural layout is similar across the species. [3] Cut in cross section, the hippocampus is C-shaped resembling a ram's ...
The horns of Ammon were curling ram horns, used as a symbol of the Egyptian deity Ammon (also spelled Amun or Amon). Because of the visual similarity, they were also associated with the fossils shells of ancient snails and cephalopods , the latter now known as ammonite because of that historical connection.
The term ramshorn snail or ram's horn snail is used in two different ways. In the aquarium trade it is used to describe various kinds of freshwater snails whose shells are planispiral, meaning that the shell is a flat coil. Such shells resemble a coil of rope, or (as the name suggests) a ram's horn.