A case can be made that strictly Day's (1961) name is infrasubspecific and unavailable from 1961. Blake (1996:132) ... [details]
Foster (1971) used Microspio downgraded to a subgenus of Spio. However, mostly it is treated as a full genus in ... [details]
Not stated by the author. Type said to be intertidal by Blake (1996: 149) and Meißner (2005: 31). [details]
Diagnosis by Blake (1996: 188): "Prostomium deeply incised along anterior margin, forming 2 prominent lobes, ... [details]
Eastern Pacific, Puget Sound to central California (USA). [details]
Eastern Pacific Ocean: from Monterey Bay (California, USA) to Gulf of California (Mexico). According to Blake ... [details]
Northern California, in the vicinity of Tomales Point (USA, Pacific Ocean). [details]
Pacific Ocean, central California to Western Santa Barbara Channel (USA). [details]
Pacific Ocean: USA, California (Santa Maria Basin and off Huntington Beach). [details]
Pacific Ocean, California (USA), off Point Arguello. Known only from the type locality. [details]
The specific epithet glandulosa is the feminine of the Latin adjective glandulosus, meaning 'full of glands', and ... [details]
The specific epithet nuchala is derived from the Medieval Latin, nucha, meaning 'nape of the neck', and refers to ... [details]
The specific epithet occipitalis is a Latin adjective, meaning 'occipital' or 'pertaining to the back of the head', ... [details]
In substrata composed mostly of sand, sometimes mixed with mud, from intertidal to shelf depths. [details]
Boring into intertidal coralline alga Lithophyllum pacificum. [details]
Outer continental shelf, in mixed sand and silt sediments. [details]
In sediments of mixed sand and silt, at shelf depths. [details]
Muddy sediments, at outer shelf and upper slope depths. [details]
One paratype was an ovigerous female with clusters of oocytes in anterior chaetigers and free oocytes posteriorly, ... [details]
Blake (1996:192) writes "there can be no doubt that P. carunculata is the same as D. socialis". Radashevsky (1993) ... [details]
Pacific Ocean, USA, California, near head of Carmel Canyon (36º27.49'N, 121º59.44'W), ca. 200 m. [details]
Pacific Ocean, USA, California, Santa Barbara Basin, off Point Sal (34º43.01'N, 120º47.39'W), 92 m. [details]
Pacific Ocean, USA, California, Santa Barbara Basin, off Point Arguello (34º26.29'N, 120º58.08'W), 930 m. [details]
Smithsonian Institution, Washington, USA (holotype: USNM 175258; paratypes: USNM 172557). [details]