families
publication ID |
https://doi.org/ 10.5852/ejt.2021.740.1283 |
publication LSID |
lsid:zoobank.org:pub:07F1B593-9F4F-4B32-88D9-ADC5CA0BEB84 |
DOI |
https://doi.org/10.5281/zenodo.4644471 |
persistent identifier |
https://treatment.plazi.org/id/03CA87A4-D36A-8038-78A0-4787FB2D614A |
treatment provided by |
Plazi |
scientific name |
families |
status |
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Identification key to all families View in CoL from the Tropical Eastern Pacific (modified from Cutler 1994)
1. Tentacles encircling the mouth (peripheral tentacles); hooks, when present, are scattered......2
– Tentacles encircling the nuchal organ (nuchal tentacles), peripheral tentacles absent; hooks, if present, arranged in rings....................................................................................................................4
2. Longitudinal muscles of body wall in uniform continuous layer ................................... Golfingiidae View in CoL
– Longitudinal muscles of body wall gathered into separate or anastomosing bands.........................3
3. Longitudinal and circular musculature with anastomosis; spindle muscle attached to the posterior trunk ........................................................................................................................ Siphonosomatidae
– Longitudinal and circular musculature in continuous bands; spindle muscle not attached to the posterior trunk ................................................................................................................. Sipunculidae View in CoL
4. Hooks absent; contractile vessel with villi .......................................................................................... ............................................. Antillesomatidae ( Antillesoma mexicanum Silva-Morales et al., 2019 1)
– Hooks present; contractile vessel without villi...............................................................................5
5. Anal shield present ................................................................................................. Aspidosiphonidae View in CoL
– Anal shield absent ................................................................................................. Phascolosomatidae View in CoL
1 This species is separate from Antillesoma antillarum (Grube, 1859) because of differences in the length of the organisms and for the molecular divergences noted by Silva-Morales et al. (2019).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.