#pomatrum

[alex-fictus]

Cambrian Critters!

Anomalocaris - Opabinia - Wiwaxia

Canadaspis - Haikoucaris - Hurdia

Myllokunmingia - Conodont - Haikouichthys

Pikaia gracilens - Hallucigenia - Eldonia

Elrathia kingii - Marella - Paradoxides

Pomatrum - Helicoplacus - Vetuicola

Stickers || Phone Wallpapers Masterlist

Planned or in the works: Cambropachycope, Amplectobelua, Stanleycaris, Balhuticaris, Kylinxia, Chancellorid, Omnidens

[alex-fictus]

My Paleozoic is Green!

Canadaspis - Wiwaxia - Pomatrum

Flexicalymene - Eurypterus - Greenops

Xenacanthus - Hyneria - Tully Monster

Diplocaulus - Moschops

Stickers || Phone Wallpapers Masterlist

[alex-fictus]

My entire Cambrian Catalogue!

Anomalocaris - Canadaspis - Eldonia

Hallucigenia - Helicoplacus - Hurdia

Marella - Pikaia - Opabinia

Haikoucaris - Wiwaxia - Paradoxides

Pomatrum - Rugose Coral - Vetuicola

Are there any missing here that you'd like to see?

[alex-fictus]

Welcome back to the Paleo Party! This guest is Pomatrum! (I tried not using my little header clip for a few paleo party eps and it feels weird now...)

[palaeopedia]

The Pomatrum ventralis (1999)

Phylum : Chordata Order : Vetulicolida Family : Didazoonidae Genus : Pomatrum Species : P. ventralis

Middle Cambrian (525 Ma)

10 cm long (size)

Chengjiang, China (map)

The fossils show that the body of the animal was divided into two parts. The anterior part of the body is moderately inflated, with a prominent mouth circlet. It has faint transverse divisions towards the front, but is otherwise smooth. The mouth circlet consists of about 30 plates divided into inner and outer regions. The anterior section has five structures on each side, which are interpreted as gills. A dark region running close to the ventral and posterior margins is interpreted as an endostyle. The condition of the anterior portion of the fossils suggests that it was thin-walled, i.e., that the anterior portion was largely hollow. The posterior part of the body tapers towards front and back (diamond-shaped), and is divided into seven segments covered in cuticle with three less well-defined segments at the anterior end. There are short spines at the posterior tip. The authors describe an alimentary canal with terminal openings and a rectum with what might be dilator muscles.