BioImages: The Virtual Field-Guide (UK)

Bilateria (bilaterally symmetrical animals)

Subtaxa (ie subgroups of this Clade)

DEUTEROSTOMIA (deuterostomes)
CHORDATA (vertebrates), eg: Erithacus rubecula (Robin, European Robin) - Adult - ventro-lateral view ECHINODERMATA (starfish, sea urchins, sea cucumbers), eg: Ophiothrix fragilis (Common Brittlestar) - Dorsal view - in rock pool
Superphylum 293 subtaxa 354 ident refs
ECDYSOZOA (skin shedders)
ARTHROPODA (arthropods), eg: Saturnia pavonia (Emperor Moth) - Female adult - dorsal view CEPHALORHYNCHA (a superphylum of invertebrates), eg: Gordionus violaceus (Faceted Hairworm) - In water NEMATODA (roundworms, eelworms or nematodes), eg: Sphaerularia bombi (Bumblebee Roundworm) - Nematode TARDIGRADA (waterbears), eg: Unidentified Tardigrada (Unidentified Waterbears) - Tun - lateral view
Superphylum 3473 subtaxa 3325 ident refs
LOPHOTROCHOZOA (molluscs and relatives)
ANNELIDA (segmented worms and leeches), eg: Malmgreniella lunulata (an annelid) - Dorsal view BRYOZOA (bryozoans, ectoprocts and moss animals), eg: Flustrellidra hispida (a bryozoan) - Colony - detail GASTROTRICHA (bristle backs, hairy backs or gastrotrichs), eg: Unidentified Chaetonotidae (Unidentified A Family Of Gastrotrichs) - Side view MOLLUSCA (slugs, snails, bivalves, octopus, sea slugs), eg: Cepaea (Cepaea) nemoralis (Brown Lipped Snail, Brown-lipped Snail) - Yf0345, dark lip - active - side view NEMERTEA (proboscis worms, ribbon worms), eg: Lineus longissimus (Bootlace Worm) - In situ - under lifted rock ROTIFERA (rotifers), eg: sp nov (rotatoria) (?New Species Of Gall-forming Rotifer) - Gall - mature
Superphylum 308 subtaxa 334 ident refs
PROTOSTOMIA (protostomes)
PLATYHELMINTHES (flatworms, tapeworms, flukes), eg: Polycelis felina (a flatworm) - Three animals
Superphylum 24 subtaxa 40 ident refs

Suggested Literature

BioInfo BioInfo ( has 1469 general literature references to Bilateria (bilaterally symmetrical animals)

Bilateria may also be covered by literature listed under:

(living things)

BioInfo BioInfo ( has 21201 feeding and other relationships of Bilateria (bilaterally symmetrical animals)

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