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 295 subtaxa 356 ident refs
ECDYSOZOA (skin shedders)
ARTHROPODA (arthropods), eg: Saturnia pavonia (Emperor Moth) - Female adult - dorsal view CEPHALORHYNCHA (priapulids, mud dragons and horsehair worms), 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 3561 subtaxa 3389 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 Chaetonotid 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: Keratella cochlearis forma robusta (a rotifer) - Rotifer - dorsal view
Superphylum 308 subtaxa 338 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 (www.bioinfo.org.uk) has 1486 general literature references to Bilateria (bilaterally symmetrical animals)

Bilateria may also be covered by literature listed under:

BIOTA
(living things)
Eukaryota
(eukaryotes)
ANIMALIA
(animals)

BioInfo BioInfo (www.bioinfo.org.uk) has 21284 feeding and other relationships of Bilateria (bilaterally symmetrical animals)

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