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Figure 1.A–D Serpula madrigalae sp. n., from Turks and Caicos Islands, USNM 1157006, holotype A–B operculum in lateral and aboral views C–D tube in dorsal and frontal views E–F Serpula cf. vermicularis, from Nigeria, UMML 22.545 E–F operculum in lateral and aboral views.
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Figure 2.A–G Serpula madrigalae sp. n., from Turks and Caicos, USNM 1157006, holotype A–B tube and detail C entire body D–E operculum, in aboral and lateral views F bayonet chaetae G hooded (capillary) chaetae H–J Serpula cf. vermicularis, from Nigeria, UMML 22.545 H–I two distinct opercula in lateral and aboral views J bayonet chaetae.
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Figure 5.Exploratory analysis of the number of opercular radii and body length ratio: Serpula madrigalae sp. n. (n= 1, only for reference), Serpula vossae sp. n. (n= 7), and Serpula cf. vermicularis (n= 4).
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Figure 6.Distribution of Serpula madrigalae sp. n., Serpula vossae sp. n., and Serpula cf. vermicularis.
