''Cotyledion tylodes'' is an extinct, stalked
filter-feeder known from the
Chengjiang lagerstatten. The living animal reached a couple of centimetres in height, and bore a loose
scleritome of ovoid sclerites. Its interpretation has been controversial, and it has been previously identified as a
carpoid
Homalozoa is an obsolete extinct subphylum of Paleozoic era echinoderms, prehistoric marine invertebrates. They are also referred to as carpoids.
Description
The Homalozoa lacked the typical pentamer body form of other echinoderms, but all were ...
echinoderm,
or as a
stem group echinoderm.
''C. tylodes'' is now classified as a
stem group entoprocta based on new fossils that clearly show a U-shaped gut and a crown of tentacles.
See also
* ''
Dinomischus
''Dinomischus ''is a rare fossil animal from the Cambrian period. It reached 20 mm in height,
was attached to the sea floor by a stalk, and looked loosely like a flower. The cup-shaped body at the top of the stalk probably fed by filter feed ...
''
* ''
Siphusauctum
''Siphusauctum'' is an extinct genus of filter-feeding animals that lived during the Middle Cambrian about 510 million years ago. Attached to the substrate by a holdfast, it had a tulip-shaped body, called the calyx, into which it actively pumpe ...
''
References
Maotianshan shales fossils
Prehistoric protostome genera
{{Cambrian-animal-stub
Cambrian genus extinctions