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Table 3 Morphological characters of Lamellibrachia columna and Lamellibrachia sagami. OL Obturaculum length, OW Obturaculum width, BL Number of branchial lamellae, SL Number of sheath lamellae, VP diameter of vestimental plaques, TP diameter of trunk plaque

From: A new record of Lamellibrachia columna (Siboglinidae, Annelida) from cold seeps off New Zealand, and an assessment of its presence in the western Pacific Ocean

Taxon n OL (mm) OW (mm) BL SL VP (μm) TP (μm) Reference
Lamellibrachia columna 13 15–42 8–13 21 8–16 65–90 70–120 Southward 1991, Southward et al. 2011
Lamellibrachia columna (New Zealand) 3 7–13 5–8 20–22 14–16 59–60 67–75 This study
Lamellibrachia sagami (holotype, Sagami Bay) 1 15.7 10.5 25 5 67–81 91–102 Kobayashi et al. 2015
Lamellibrachia sagami (paratypes, Sagami Bay) 17 5.8–22.5 4.4–10.8 19-26 3–6 59–101 67–130 Kobayashi et al. 2015
Lamellibrachia sagami (Nankai Trough) 1 10.2 6.8 23 5 58–67 70–104 Kobayashi et al. 2015