[Diagnosis of Blake, 2025] Body elongate, arenicoliform. Prostomium with a pair or lateral or frontal horns. ... [details]

[Original diagnosis of Pocklington & Fournier (1987)] Body fusiform, 20-30 segments; prostomium triangular with ... [details]

[Diagnosis of Blake (2025)] Body elongate, arenicoliform. Prostomium with frontal horns; eyespots present or ... [details]

(Emended Blake, 2025: 202). Body elongate, arenicoliform, expanded anteriorly. Prostomium T-shaped with lateral ... [details]

Body elongate, arenicoliform. Prostomium T-shaped with frontal horns. Peristomium a single ring, encompassing ... [details]

"Body elongate, arenicoliform. Prostomium T-shaped with lateral horns. Peristomium achaetous, surrounding ... [details]

According to Blake (2025) Axiokebuita minuta is widespread in the Southern Ocean in continental shelf and slope ... [details]

Blake (2025) lists numerous reports of Hyboscolex pacificus since the original description by Moore (1909) as ... [details]

Lipobranchius is currently monotypic, containing only Lipobranchius jeffreysii (McIntosh, 1869) . However, it also ... [details]

Asclerocheilus nathanae is named for is named for Ms. Desiree Nathan, Kuala Lumpur, Malaysia, who was overall ... [details]

Axiokebuita verenae is named after Dr. Verena Tunnicliffe, original collector of the species. [details]

Hyboscolex ehlersi is named for Polychaeta taxonomist Professor Ernst Heinrich Ehlers (1835–1925) [details]

Hyboscolex farallonensis is named after the proximity of the offshore type locality to the Farallon Islands, off ... [details]

Hyboscolex harrisae is named for Leslie Harris, joint collector of the specimens, and Collections Manager at LACM. [details]

Hyboscolex reesi is named for Dr. Bryant Eugene Rees (1912–1985), Professor of Biology at California State ... [details]

Oligobregma acsarum is named from "ACSAR, the acronym used by the project team for the Atlantic Continental Slope ... [details]

Oligobregma acutaspinosum is named from the Latin acutus, for pointed and the Latin spina, for thorn in reference ... [details]

Oligobregma brychiatum is named for "Greek, brychios meaning “from the deep” in reference to the great depths ... [details]

Oligobregma chromatum is named from the Greek ‘chroma’, for color of the skin or surface, in reference to the ... [details]

Oligobregma emmae is named after the R/V Emma, the research vessel used on the survey to collect samples from off ... [details]

Oligobregma escanabis is named for the Escanaba Trough, where collected. It is not stated how 'escanabis' is ... [details]

Oligobregma hampsoni is named after George W. Hampson, former Research Scientist at the Woods Hole Oceanographic ... [details]

Oligobregma menziesi is named after Dr. Robert J. Menzies, Chief Scientist on several of the SEPBOB voyages. [details]

Oligobregma sphaeracirratum is named for the large spherical dorsal cirri on the posterior parapodia, intended as a ... [details]

Oligobregma weddelliensis Blake, 2025 is named after the Weddell Sea, Antarctica, where collected. Note that the ... [details]

Oligobregma williamsae is named after Ms. Isabelle P. (Izzie) Williams who worked with the late Dr. Howard L. ... [details]

Parasclerocheilus fonsecae is named after the collector of the holotype, the late Ana C. Fonseca-Escalante, Costa ... [details]

Pseudoscalibregma biannulatum is named as a compound formed from bi, Latin for two and annulus, Latin for ring, in ... [details]

Pseudoscalibregma gracilis is named from the Latin gracilis, for slender or thin in reference to the unusually ... [details]

Pseudoscalibregma larae is named after Ms. Lara (Luzak) Parisi, graduate assistant in 2007 who investigated the ... [details]

Pseudoscalibregma nybakkeni is named after Dr. James W. Nybakken (1936–2009), former Professor of Marine Biology ... [details]

Pseudoscalibregma pigmentum is named for Latin 'pigmentum' color or paint, after the pigmented posterior glands. ... [details]

Scalibregma aggregatum is named for adjectival Latin aggregatus -a -um meaning "collected' or 'clustered' ... [details]

Scalibregma antennatum is named for Latin, antenna, a sensory appendage on the head in reference to the elongate, ... [details]

Scalibregma aubreyi is named after the late Mr. Stephen B. Aubrey, oceanographic field scientist on the sampling ... [details]

Scalibregma beaufortensis is named for the Beaufort Sea in the Arctic Ocean where it was collected. For neuter ... [details]

Not stated. The noun phrase 'brevicauda' is Latin for short tail. 'Cauda' (tail) is a noun and nouns or compound ... [details]

Scalibregma chilensis is named for its country of origin. For neuter genus gender agreement the correct adjectival ... [details]

Scalibregma cornutum is named for the distinctive laterally directed horns on the anterior margin of prostomium, a ... [details]

Scalibregma fimbriatum is named for the unusual double row of lobes on the anterior margin of the two peristomial ... [details]

Scalibregma hadrostomium is named for its enlarged and inflated peristomium, a neuter compound Latin adjective ... [details]

Scalibregma lydoniensis is named after Lydonia Canyon. For neuter genus gender agreement the correct adjectival ... [details]

Scalibregma profundum is named for the abyssal depths of the type locality from Latin neuter adjective 'profundus'. [details]

Scalibregma rhoadsi is named after named for Dr. Donald C. Rhoads, benthic ecologist and part of the Cape Hatteras ... [details]

Scalibregma ridleyensis is named for Ridley Island near where collected. For neuter genus gender agreement the ... [details]

Scalibregma sahlingi is named for the collector of the species, Dr. Heiko Sahling (1969–2018), marine ecologist ... [details]

Scalibregma therouxi is named after Dr. Roger B. Theroux (1935–2008), former biologist with the U.S. National ... [details]

Scalibregma velatum is named for the annular rings of the peristomium and chaetiger 1 that together form an ... [details]

Scalibregmella pacifica is named for the ocean in which it was found. [details]

Sclerobregma multiaciculatum is named for the multiple kinds of anterior acicular spines present, a compound ... [details]

Cheilus' (cheilos) could be neuter, but Grube treated it as masculine, as did following authors and the authors of ... [details]

Blake (2025: 162) revalidated Scalibregma brevicauda (as 'brevicaudum') and reported the probable holotype (from ... [details]

Blake (2025: 25) states that, alfthough reported widely "It is clear that most, if not all, of the non-Arctic ... [details]

Asclerocheilus has been treated as masculine, therefore as a masculine genus the name when recombined should be ... [details]

Oligobregma aciculata should be O. aciculatum (q.v) for grammatical agreement of specific epithet with a neuter ... [details]

Note that the author published the species-group name as 'wedelliensis' instead of the correct neuter 'wedelliense' ... [details]

The author's published spelling of 'gracilis' should be corrected to 'gracile'. For a neuter genus gender ... [details]

As Scalibregma is a neuter gender genus it is mandatory to correct the adjectival spelling to australe as ... [details]

Note that the author published the species-group name as 'beaufortensis' instead of the correct neuter ... [details]

Blake 2025:162) revalidated Scalibregma brevicauda from long-existing synonymy with S. inflatum and elected to ... [details]

Note that the author published the species-group name as 'chilensis' instead of the correct neuter 'chilense'. For ... [details]

Note that the author published the species-group name as 'lydoniensis' instead of the correct neuter 'lydoniense'. ... [details]

Note that the author published the species-group name as 'ridleyensis' instead of the correct neuter 'ridleyense'. ... [details]

Hartman (1965) correctly created a neuter adjectival species-group name of branchiatum, but subsequently (e.g. ... [details]

Hartman (1965) correctly creates an neuter adjectival species-group name of branchiatum, but subsequently (e.g. ... [details]

The holotype of N. glabrus is not identifiable to genus or species and is a juvenile (fide Blake 2015: [as spelling ... [details]

Blake (2025: 43) as first revisor placed O. blakei as synonym, based on a juvenile described from same station as ... [details]

Kudenov (1985:339), examined the only specimen and suggested Mucibregma spinosa might be a member of ... [details]

Stephens Passage, near Juneau, Alaska, NE Pacific Ocean, 58.3040°N, 134.7095°W, ca. 50 m, holotype CASIZ 165339 [details]

west of Farallon Islands, Continental slope off northern California, 37.75°N, 123.583°W, 2850 m, holotype ... [details]

continental slope off Durban, Natal, South Africa, Indian Ocean, 30.200°S, 32.017°E, 1360 m, holotype LACM-AHF ... [details]

W of Nelson Island, Scotia Sea, off Antarctic Peninsula, 63.225°S, 64.613°W, 2079 m, holotype ZMHANN- 030779 [details]

off Charleston, South Carolina, North America, 32.2°N, 76.704°W, 1991 m, holotype USNM 1741686 [details]

rock scraping, Santa Maria Basin off Purisima Point, California, 34.759ºN, 129.837ºW to 34.765ºN, 129.829ºW, ... [details]

south of Pioneer Canyon, off San Francisco, California, North America, 37.225ºN, 123.125ºW, 1020 m, holotype ... [details]

Matterhorn Platform Survey, off Louisiana, Gulf of Mexico, 28.742°N, 88.805°W, 921 m, holotype MCZ IZ 171905. [details]

E of Fuerte Bulnes, Strait of Magellan, Tiera del Fuego, 53.633°S, 70.842°W, 249–392 m, holotype LACM-AHF Poly ... [details]

off Brunei, Island of Borneo, South China Sea, 5.523°N, 113.705°E, 1947 m, holotype MCZ IZ 171906 [details]

West of Farallon Islands Continental slope off northern California, 37.632°N, 123.448°W, 2670 m, holotype ... [details]

West of Farallon Islands, Continental slope off northern California, 37.717°N, 123.4670°W, 2250 m, ... [details]

Las Gemelas Seamount, near Isla del Coco, off Costa Rica, East Pacific Ocean, 4.9871°N, 87.4433°W, 243 m, ... [details]

Abyssal plain off Cape Norvegia, Weddell Sea, Antarctica, 70.640831°S, 14.714330°W, 4928 m, holotype ZMH-ANN-030783. [details]

Slurp sample on basalt, HOV Pisces IV, Hell vent, Southern Axial Seamount, Juan de Fuca Ridge, 45.932°N, ... [details]

Abyssal plain West of Antarctic Peninsula, Weddell Sea, 65.2700°S, 48.06350°W, 4069 m, holotype ZMH-ANN-030784. [details]

Rocks in sand, Western side Isla Quenu, Punta Pinto, Golfo de Ancud, Chile, 41.821°S, 73.171°W, intertidal, ... [details]

West of Farallon Islands, West of San Francisco, Continental slope off northern California, 37.7°N, 123.45°W, ... [details]

Off Tjarno Marine Station, Kosterfjord, Skagerrak, Sweden, 58.882°N, 11.095°E to 58.882°N, 11.098°E, 50–100 ... [details]

Matterhorn Platform Survey, off Louisiana, Northern Gulf of Mexico, 28.742°N, 88.831°W, 850 m, holotype MCZ IZ 171910. [details]

off Cape Fear, North Carolina, North America Atlantic coast, South ACSAR Program, 32.921°N, 75.833°W, 3006 m, ... [details]

Offshore of Charleston, South Carolina, 32.395°N, 77.018°W, 800 m, holotype USNM 1741700. [details]

Scotia Sea, Antarctica, 60.449167°S, 56.082667°W, 3957 m, holotype ZMH-ANN-030785. [details]

Offshore of Brunei, Island of Borneo, 5.517°N, 113.608°E, 1999 m, holotype MCZ IZ 171914. [details]

Offshore of Brunei, Island of Borneo, 5.36°N, 113.821°E, 1325 m, holotype MCZ IZ 171915 [details]

HOV Alvin Dive 2035, Gorda Ridge, Escanaba Trough, N Pacific, 41.007°N, 127.293°W, 3305 m, box core B, holotype ... [details]

Offshore of New England, North America Atlantic coast, 40.954°N, 66.230°W, 2103 m, holotype USNM 1741703. [details]

Milne-Edwards Deep, Peru-Chile Trench, offshore of Peru, 08.7°S, 80.667°W, 3167–3318 m, holotype LACM-AHF Poly ... [details]

Offshore New England, NW Atlantic, 40.085°N, 67.497°W, 2071 m, holotype USNM 1741704. [details]

Weddell Sea, E of Antarctic Peninsula, 65.3108 S, 51.5152 W, 3065 m, holotype ZMH-ANN-030790. [details]

Off New Jersey, Gay-Head Bermuda Transect, 38.267°N, 71.783°W, 2864 m, holotype LACM-AHF Poly 13310. [details]

Coast of Punta Islotes, Golfo Dulce, Costa Rica, Pacific coast, 8.7327 N, 83.3979 W, intertidal, holotype MCZ IZ 62651. [details]