Classification
Within iNaturalist.org

All Names

  • English
    • Flatworms
  • Scientific Names
    • Platyhelminthes
  • Spanish
    • Gusanos planos y parientes
  • Japanese
    • 平板動物門

Extras

Taxonomic changes »

Taxon schemes »

Make taxonomic Flickr tags for this taxon »

Invite photos from other sites »

Wikipedia taxobox »

Search descendant taxa »

Embed a widget for this taxon on your website »

3578153988 a3559e66bb s 438039243 fccd05bd4f s 2525434701 1d72dba5be s 421823512 16d8bc2c38 s 2449528504 255a6fa2e7 s Square Square Square 1490805634 aa13a03b5f s 4083029866 a1dae54faf s Square 3959699753 728b529bcd s 1289714967 80282fe6a3 s Square Square 1490805634 aa13a03b5f s 1289714967 80282fe6a3 s Square Square Square Square 438039337 2ab7588d45 s 434382128 68d4b32c5a s 444653127 f0151f22ba s
Creative Commons Flickr Photos Tagged "Platyhelminthes."

Recent observations

Photos / Sounds

Square

What

Gold-dotted Flatworm Thysanozoon nigropapillosum

Observer

maractwin

Date

January 24, 2016 09:17 AM PGT

Photos / Sounds

Square

What

Flatworms Phylum Platyhelminthes

Observer

nick_1121

Date

February 1, 2016 09:44 AM EST

Place

(Somewhere...)

Photos / Sounds

Square

What

Flatworms Phylum Platyhelminthes

Observer

curtisgongora

Date

February 1, 2016 08:37 AM EST

Place

(Somewhere...)

Photos / Sounds

Square

What

Land Planarians Family Geoplanidae

Observer

jefffryett

Date

January 28, 2016 10:23 AM NZDT

Description

Found in rotting log.

Photos / Sounds

Square

What

Land Planarians Family Geoplanidae

Observer

jon_sullivan

Date

January 14, 2016 10:24 PM NZDT

Photos / Sounds

Square

Observer

krancmm

Date

January 25, 2016 11:04 PM CST

Description

Recently introduced exotic. Allegedly feeds on snails and slugs only. Also called Mollusc-eating Hammerhead Worm.

Photos / Sounds

What

Land Planarians Family Geoplanidae

Observer

pjd1

Date

January 20, 2016

Description

Always wanted to know if these are really nematode 'worms'. I see them often and when I ask 'experts' they usually throw their hands up in horror, scream 'Nematode worm of some kind' and head for the hills. A reflection I am told on the current lack (or almost lack) to local New Zealand taxonomic skills or interest in these 'things'.

Single one found under rotting macrocarpa (Cupressus macrocarpa) logs lying in pasture near stream. Colour (to colour vision impaired me) 'bluish black' to black with light patches near assumed 'head' end, coiled up when found but extended rapidly when exposed to about 50 mm in length. Underside reddish.

Any ideas?

Photos / Sounds

Square

Observer

lisa_bennett

Date

January 6, 2016

Description

Found under a rock in shallow water.

Photos / Sounds

Square

What

Hammerhead Worms Subfamily Bipaliinae

Observer

hsh

Date

January 21, 2016 09:54 AM PST

Place

(Somewhere...)

Photos / Sounds

Square

What

California Flatworm Stylochus californicus

Observer

robberfly

Date

January 21, 2016 04:00 PM PST

Photos / Sounds

Square

What

California Flatworm Stylochus californicus

Observer

anudibranchmom

Date

January 21, 2016 03:57 PM PST

Photos / Sounds

Square

What

California Flatworm Stylochus californicus

Observer

dpom

Date

January 21, 2016 04:01 PM PST
View all observations

Description from Wikipedia

The flatworms, known in scientific literature as Platyhelminthes or Plathelminthes (from the Greek πλατύ, platy, meaning "flat" and ἕλμινς (root: ἑλμινθ-), helminth-, meaning worm) are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrate animals. Unlike other bilaterians, they have no body cavity, and no specialized circulatory and respiratory organs, which restricts them to having flattened shapes that allow oxygen and nutrients to pass through their bodies by diffusion. The digestive cavity has only one opening...

No range data available.