Noun:

ஐரோப்பிய பெருமர வகை,

yelm's Usage Examples:

TREMATODES, or flukes (as they are called from their fish-like shape), one of the three classes that compose the phylum Platyelmia.

- Free-swimming Larva (Mailer's Larva) of a Polyclad Planarian to illustrate the trochosphere-hypothesis of the origin of Platyelmia.

- Trichoplax adhaerens, an organism considered, on the Gastraea-hypothesis, to be closely allied to the progenitors of the Platyelmia.

As the Turbellaria (Planarians) are the most primitive division of the Platyelmia, the problem of the affinities of this phylum resolves itself into that of the relationships of the Turbellaria.

In fact, the whole history of the Platyelmia is marked by a great specialization of the reproductive evolutionary history, accompanied by a simple somatic line of evolution.

The so-called flatworms (Platyelmia, q.