pycnogonida การใช้

Meinert specialised in comparative anatotomy and histology mainly of Malacostraca and Pycnogonida.
This kind of intracellular digestion occurs in many unicellular protozoans, in Pycnogonida, in some molluscs, Cnidaria and Porifera.
He later worked at the Natural History Museum, where he became assistant curator of Crustacea and Pycnogonida and Keeper of Zoology.
Recent work places the Pycnogonida outside the Arachnomorpha as basal Euarthropoda, or inside Chelicerata ( based on the chelifore-chelicera putative homology ).
These are related as shown below . ( Pycnogonida ( sea spiders ) may be excluded from the chelicerates, which are then identified as the group labelled " Euchelicerata " .)