Glossary: L

"leg gait" locomotion

Using legs, rather than body movements, to locomote. Synapomorphy of the Arthropoda+Tartigrada.


Producing milk from evolved mammary glands to nourish young. Synapomorphy of the Mammalia.


an inland body of standing water.

lakes and ponds

small to large bodies of fresh water surrounded by land and fed by springs, streams, or rain runoff


a free-living, sexually immature form in some animal life cycles. Larvae may differ from adult forms in many respects, including morphology, diet, and habitat.


oriented towards or from the side or sides.


a form of polygyny in which males congregate at sites where they perform mating displays. Females choose among displaying males at lek sites.


a measure of a body from one end to another


A climbing plant.


amount of time in the life of an organism. This is not easy to determine for wild animals. The typical or maximum ages reached by captive animals are often better known (and may be the only information available). However, it can't reflect what most wild populations really experience

litters per year

the typical or range of typical number of successful reproductive efforts of a mammal in a year, a "litter" is a group of mammal young gestated together and born at the same time.


Semi-arid savanna found in South America.


Slapping the water with the flukes.


The act or power of moving from place to place.


Extending lengthwise.


A ring of hollow tentacles which are extensions of the coelomic cavity (mesocoel). The lophophore surrounds the mouth and is covered with cilia to move water bearing food particles into the animal's mouth. Synapomorphy of the Lophophorates.