One of the two distal bones in the forelimb of tetrapods. Synapomorphy of tetrapods+Euthenopteron

uses sound above the range of human hearing for either navigation or communication or both

The layer of shrubs, herbs and small trees beneath the forest canopy.

A hoofed mammal which is usually adapted for running. Includes deer, cattle, gazelles, horses, elephants, and hyraxes. Most are large herbivores. The term no longer has taxonomic significance.

living in cities and large towns, landscapes dominated by human structures and activity.

This habitat is found in the Solimoes/Amazon River system. It is seasonally inundated, with annual fluctuations in water level of up to 15 m (50'). It includes tall forest, which is restricted to narrow interlinked corridors (restingas) located on alluvial levees marking the deposition areas of old watercourses. This vegetation is flooded for less than six months each year. Areas of low, dense scrub (chavascais) separate the restingas, with some open grassy areas and many ribbon-like lakes. This low vegetation is flooded for more than half the year, usually being submerged completely. At peak flood, only the canopies of the restinga trees can be seen above the water (Ayres & Johns 1987).

of or containing vessels that carry or circulate fluids, such as blood, lymph, or sap, in animals and plants.

an animal which acts to cause the infection of humans with a disease organism. For example, mosquitoes act to inject the sporozoan parasite, Plasmodium, into the human blood stream.

An extension of the umbrella which curls inward and functions in swimming. Similar in function to a velum or other hydrozoa, but structurally different. Synapomorphy of Cubozoa.

Shelf-like membrane structure on the subumbrella (ventral) surface, which extends from the outer edge to the manubrium. Synapomorphy of Hydrozoa2.

a poisonous secretion of an animal, such as a snake, spider, or scorpion, usually transmitted by a bite or sting.

an animal which has an organ capable of injecting a poisonous substance into a wound (for example, scorpions, jellyfish, and rattlesnakes).

On the lower or bottom side or surface.

resembling or shaped like a worm.

eats worms (including annelids, nematodes, and other worm-like animals)

The bones of the axial skeleton. Synapomorphy of the Vertebrata.

An animal (including amphibians, birds, fish, mammals and reptiles) with a backbone.

movements of a hard surface that are produced by animals as signals to others

uses sight to communicate

reproduction in which fertilization and development take place within the female body and the developing embryo derives nourishment from the female.

A shallow, usually sharply defined depression in a desert region, frequently comprising a bed or valley of a stream that is usually dry except during the rainy season and that often forms an oasis.

A maze of passageways.

A term applied to certain species of wild pigs. The warty pigs are so-called because the adult males typically develop three pairs of warts: on the cheek swellings, on the jaw angle, and above the canine root flanges.

A network of ducts filled with water that is used to move echinoderm tentacles and tubefeet via changes in water pressure. Synapomorphy of the Helicoplacopids+Camptostromata+Crinoidea+Asteroidea+Ophiuroidea+Echinoidea+Holothuroidea.

The time when a young animal stops nursing and begins utilizing other food.

1. a structure of delicate, threadlike filaments spun by spiders, some mites, or certain insects;
2. a membrane or fold of skin connecting the toes, as of certain amphibians, birds, and mammals;
3. the barbs on each side of the shaft of a bird's feather; a vane;
4. a latticed or woven structure.

lowland areas satured with water, characterized by low soil oxygen.

breeding takes place throughout the year

young are relatively well-developed when born

A bunch grass habitat, mainly consisting of Epicampes, Festuca and Muhlenbergia, unique to central Mexico.

a larval form of crabs and other decapod crustaceans, characterized by one or more spines on the carapace and by rudimentary limbs on the abdomen and thorax.

The study of differences in animal distribution across geographic regions. Often integrates a variety of disciplines, such as ecology, physiology, phylogenetics, paleontology, geology and biogeography.

animal constituent of plankton; mainly small crustaceans and fish larvae. (Compare to phytoplankton.)

Web application server built on top of an object database and the Python scripting language.

Application server that uses Acquisition Algebra to turn URL paths into traversed object calls (either via bobo__traverse methods or attribute lookups).

a cell formed by the fusion of two gametes, usually a sperm and egg cell. The zygote refers specifically to a fertilized egg before cleavage begins.