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Examples of biramous
biramous
Whether the ancestral limb was uniramous or biramous is far from a settled debate, though.
From the en.wikipedia.org
Trilobites, for instance, also possessed biramous appendages.
From the en.wikipedia.org
The original structure of arthropod appendages was probably biramous, with the upper branch acting as a gill while the lower branch was used for walking.
From the en.wikipedia.org
It is unclear whether the biramous condition is a derived state which evolved in crustaceans, or whether the second branch of the limb has been lost in all other groups.
From the en.wikipedia.org
- Bifurcate: resembling a fork; divided or separated into two branches; "the biramous appendages of an arthropod"; "long branched hairs on its legson which pollen collects"; "a forked river"; "a forked tail"; "forked lightning"; "horseradish grown in poor soil may develop prongy roots"
- The arthropod leg is a form of jointed appendage of arthropods, usually used for walking. Many of the terms used for arthropod leg segments are of Latin origin, and may be confused with terms for bones: coxa (meaning hip), trochanter (compare greater trochanter and lesser trochanter), femur, ...
- Branching in two, composed of two branches
- Having two branches, a typical condition for most primitive crustacean appendages.
- In the Crustacea, it describes the condition in which appendages are divided into two segmented branches: exopodite and endopodite, these branches arise from a basal segment called the basipodite
- Arthropod appendages that are biramous have two branches, an outer branch and an inner branch. These branches may have separate functions; in crustaceans, for instance, the inner branch of a leg is used for walking, while the outer branch may be paddle-shaped or feathery and often functions as a ...
- The appendages of arthropods may be either biramous or uniramous. A biramous limb, however, branches into two, and each branch consists of a series of segments attached end-to-end. Also see uniramous.
- Having notopodium and neuropodium
