Recent work places the Pycnogonida outside the Arachnomorpha as basal Euarthropoda, or inside Chelicerata ( based on the chelifore-chelicera putative homology ).
12.
""'Dracochela deprehendor " "'is a fossil stem group species of pseudoscorpion, though lacking a spinneret on the chelicera.
13.
In this case, the high levels of serotonin contained in the venom, plus at minimum strong chelicera, will contribute to deliver a very painful bite.
14.
Most males in this genus have a characteristic very long, forward projecting process on each chelicera, which looks like a lance which has been bent near the tip.
15.
This hypothesis was based on the supposed presence of unique spider features such as silk-producing spinnerets and the opening of a venom gland on the fang of the chelicera.
16.
In 2009, N . Snegovaya & W . Starga synonymized this genus with " Phalangium ", on the grounds that the shape of the horn on the second segment of the male chelicera ( the only diagnostic character of the genus " Bactrophalangium " ) fits well within the range demonstrated by the rest of the genus " Phalangium ".
