family bacteroidaceae

family of bacteria living usually in the alimentary canal or on mucous surfaces of warm-blooded animals; sometimes associated with acute infective processes ;

family balaenicipitidae

shoebills ;

family balaenidae

right whales ;

family balaenopteridae

rorquals; blue whales ;

family balanidae

stalkless barnacles ;

family balistidae

triggerfishes ;

family balsaminaceae

distinguished from the family Geraniaceae by the irregular flowers ;

family bangiaceae

a family of protoctist ;

family bathyergidae

mole rats; sand rats ;

family batidaceae

family coextensive with genus Batis: saltworts ;

family batrachoididae

toadfishes; related to anglers and batfishes ;

family begoniaceae

monoecious succulent herbs or shrubs of tropical and warm regions especially America ;

family belemnitidae

family of extinct Mesozoic cephalopods ;

family belonidae

ferocious fishes of warm regions resembling but unrelated to the freshwater gars ;

family belostomatidae

water bugs ;

family bennettitaceae

a family of fossil gymnospermous plants of the Carboniferous ;

family berberidaceae

shrubs or herbs ;

family betulaceae

monoecious trees and shrubs (including the genera Betula and Alnus and Carpinus and Corylus and Ostrya and Ostryopsis) ;

family bible

a large Bible with pages to record marriages and births ;

family bignoniaceae

trees or shrubs or woody vines or herbs having fruit resembling gourds or capsules; sometimes placed in the order Scrophulariales ;

family bittacidae

a family of predacious tropical insects of the order Mecoptera ;

family blastodiaceae

a family of saprobic fungi of order Blastocladiales ;

family blattidae

domestic cockroaches ;

family blechnaceae

one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems; includes genera Blechnum, Doodia, Sadleria, Stenochlaena, and Woodwardia ;

family blenniidae

a family of fish including: combtooth blennies ;

family boidae

boas and pythons ;

family boletaceae

family of fleshy fungi having the germ pores easily separating from the cup and often from each other ;

family bombacaceae

tropical trees with large dry or fleshy fruit containing usually woolly seeds ;

family bombycidae

Chinese silkworm moth ;

family bombycillidae

a family of birds of the suborder Oscines ;

family bombyliidae

bee flies ;

family boraginaceae

a widely distributed family of plants distinguished by circinate flowers and nutlike fruit ;

family bothidae

a family of fish of the order Heterosomata ;

family bovidae

true antelopes; cattle; oxen; sheep; goats ;

family bradypodidae

a family of edentates comprising the true sloths ;

family bramidae

deep-bodied percoid fishes of the open seas ;

family branchiobdellidae

small annelid worms with the posterior end modified into an adhesive sucker; especially formerly regarded as modified leeches ;

family branchiostegidae

small family of marine fishes having covered gills ;

family branchiostomidae

lancelets ;

family brassicaceae

plants with four-petaled flowers ;