Figure 21 in Identification of fossil worm tubes from Phanerozoic hydrothermal vents and cold seeps

Figure 21. Principal coordinate analysis plot of modern and fossil annelid tubes, based on the 48 characters scored for this study. Fossils (grey crosses): 1. Yamankasia rifeia; 2, Eoalvinellodes annulatus; 3, 'Sibay tubes'; 4, Tevidestus serriformis; 5, 'Figueroa tubes'; 6, 'Sassenfjorden area tubes'; 7, 'Cold Fork Cottonwood Creek tubes'; 8, 'Prince Patrick tubes'; 9, 'Ellef Ringnes tubes'; 10, 'Troodos attached tubes'; 11, 'Troodos wrinkled tubes'; 12, 'Troodos collared tubes'; 13, 'Okukinenbetsu yellow tubes'; 14, 'Okukinenbetsu brown tubes'; 15, 'Omagari tubes'; 16, 'Canyon River tubes'; 17, 'Murdock Creek tubes'; 18, 'West Fork Satsop River tubes'; 19, Serpulidae sp., 'Bexhaven'; 20, 'Upper Waiau River tubes'; 21, 'Rocky Knob tubes'. Modern tubes: Chaetopteridae (orange dots): 22, Chaetopterus cf. variopedatus; 23, Chaetopteridae id83; 24, Phyllochaetopterus polus; 25, P. gigas; 26, P. claparedii; 27, P. prolifica; 28, P. socialis; 29, Spiochetopterus izuensis; 30, S. sagamiensis; 31, S. costarum; 32, S. typicus; 33, Mesochaetopterus taylori. Siboglinidae, frenulata (dark blue filled triangles): 34, Galathealinum arcticum; 35, Lamellisabella denticulata; 36, Oligobrachia gracilis; 37, Polybrachia canadensis; 38, Siboglinum ekmani; 39, S. lacteum; 40, Siphonobrachia lauensis; 41, Unibrachium colombianum; 42, Zenkevitchiana longissima; 43. Siboglinidae, Sclerolinum (light blue outline triangle): S. contortum; Siboglinidae, vestimentiferans (light purple filled inverted triangles): 44, Alaysia spiralis; 45, Arcovestia ivanovi; 46, Escarpia southwardae; 47, Lamellibrachia anaximandri; 48, Paraescarpia echinospica; 49, Ridgeia piscesae; 50, Riftia pachyptila; 51, Tevnia jerichonana; 52, Seepiophila jonesi; Siboglinidae, vestimentiferan roots (dark purple outline inverted triangles): 53, E. southwardae root; 54, L. anaximandri root; 55, S. jonesi root; 56, P. echinospica root; Alvinellidae (maroon outline diamond): 57, Alvinella sp.; Ampharetidae (fuchsia outline rhombus): 58, Glyphanostomum sp.; Serpulidae (lime filled squares): 59, Serpulidae sp. JCR; 60, Serpula vermicularis; 61, Vermiliopsis infundibulum; Sabellidae (yellow outline squares): 62, Sabella pavonina; 63, Megalomma vesiculosum; Oweniidae (dark green outline dot): 64. Owenia fusiformis.