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TABLE 1. Data for dolichometopid specimens used in this study. Abbreviations: AGW, anterior glabella width; CW, cephalon width; EL, eye length; GL, glabella length; MGW, mid-glabella width; MOD, mid-ocular distance; PGW, posterior glabella width.

 Specimen
Number
FormationNumber of
Thoracic
Segments
5th Thoracic
Pleural Spines
Axial Spine
Bases
Eye Length
(EL/GL)
Eye Position
(MOD/GL)
AGW/ MGWAGW/ PGWPGW/ CWHistoric
Identification
Identification
Source
Taxonomic
Assignment
Here
1 USNM 78400a Cadiz 8 Elongate None preserved 0.476 0.555 1.23 1.15 0.252 Glossopleura lodensis Resser, 1935 G. lodensis
2 USNM 78400b Cadiz 8 Short, typical None preserved 0.402 0.487 1.40 1.08 0.308 Glossopleura mohavensis Resser, 1935 G. mohavensis
3 LACM 10785 Cadiz 8 Short, typical T1-T8 0.424 0.436 1.09 0.97 ? Sonoraspis californica Stoyanow & Susuki, 1955 G. mohavensis
4 LACMIP 10786 Cadiz 8 Short, typical T3-T8 0.397 0.460 1.15 0.94 ? Sonoraspis californica Stoyanow & Susuki, 1955 G. mohavensis
5 LACMIP 2471-11 Cadiz 8? Elongate ? 0.500 0.628 1.10 1.05 0.233 Anoria lodensis Resser, 1935 G. lodensis
6 MWC 7779 Cadiz 8? ? None preserved ? ? ? ? ? New specimen - G. mohavensis
7 MWC 7769 Cadiz 8 Short, typical None preserved ? ? ? ? ? New specimen - G. mohavensis
8 USNM 62714 Bright Angel 7 Short, typical T4-T7 0.459 0.676 1.33 1.20 0.286 Glossopleura mckeei Resser, 1935 G. boccar; Sundberg, 2005
9 USNM 62713 Bright Angel 7 Short, typical None preserved 0.587 0.601 1.40 1.17 0.310 Glossopleura mckeei Resser, 1935 G. boccar; Sundberg, 2005
10 USNM 108592a Bright Angel 7 Short, typical T3-T7 0.524 0.571 1.30 1.25 ? Glossopleura mckeei Resser, 1935 G. boccar; Sundberg, 2005
11 USNM 108592b Bright Angel 7 Short, typical None preserved 0.476 0.476 1.31 1.21 ? Glossopleura mckeei Resser, 1935 G. boccar; Sundberg, 2005
12 USNM 108592c Bright Angel 7 Short, typical(?) T3-T7 0.543 0.543 1.42 1.21 0.280 Glossopleura mckeei Resser, 1935 G. boccar; Sundberg, 2005
13 USNM 62685 Bright Angel 7 Elongate T2-T7 0.333 0.385 1.16 1.02 0.338 Anoria tontoensis Walcott, 1924 Anoria tontoensis
14 GRCA 123303 Bright Angel ? ? ? 0.327 0.537 1.22 1.11 0.293 New specimen - Anoria tontoensis
15 GRCA 123304 Bright Angel ? ? None preserved 0.371 0.498 ? ? 0.272 New specimen - Anoria tontoensis
16 DMNH EPI.42917 Bright Angel 7 Short, typical None preserved 0.294 0.456 ? ? ? New specimen - Anoria tontoensis
17 DMNH EPI.42915 Bright Angel 7 Medium, all None preserved 0.446 0.465 1.19 1.01 0.325 New specimen - Anoria? bessus
18 DMNH EPI.42916 Bright Angel 7 Medium, all T4(?)-T7 ? ? ? ? ? New specimen - Anoria? bessus
19 GRCA 11520 Bright Angel 7 Short, typical None preserved 0.370 0.518 1.20 1.13 ? Anoria tontoensis Foster, 2011b; catalog Anoria tontoensis
20 USNM 62686 Bright Angel 7 ? T1-T6(T7?) ? ? 1.26 1.10 ? Anoria tontoensis McKee & Resser, 1945 Anoria tontoensis
21 GRCA 2797 Bright Angel ? ? T2-T7 0.353 0.647 1.05 1.02 0.275 Anoria tontoensis Foster, 2011b; catalog Anoria tontoensis
22 USNM 123356 Ophir 7 Short, typical None preserved ? ? ? ? ? Glossopleura producta Palmer, 1954 G. producta
23 USNM 15459 Ophir 7 Short, typical None preserved 0.500 0.500 1.33 1.14 0.250 Glossopleura producta Resser, 1935 G. producta
24 FHPR 16738 Ophir 7? ? T4-T7 0.484 0.377 1.13 1.00 0.205 New specimen - G. producta
25 FHPR 16739 Ophir 7 ? ? ? ? ? ? ? New specimen - G. producta
26 FHPR 11285 Ophir ? ? ? 0.637 0.571 1.36 1.24 ? New specimen - G. producta
27 DMNH EPI.42919 Ophir ? ? ? 0.600 0.600 1.11 1.00 ? New specimen - G. producta
28 UU 10051.08 Spence 8 Short, typical No 0.545 0.594 1.10 1.05 0.301 Glossopleura campbelli Robison & Babcock, 2011 G. campbelli
29 BPM 1003 Spence 8 Short, typical No 0.412 0.588 1.10 1.10 0.329 Glossopleura campbelli Robison & Babock, 2011 G. campbelli
30 UU 10051.09 Spence 8 Medium, all T2-T8 0.656 0.625 1.31 1.17 0.302 Glossopleura yatesi Robison & Babcock, 2011 G. yatesi
31 UU 10051.10 Spence 8 Medium, all T2-T8 0.444 0.666 1.41 1.33 0.284 Glossopleura yatesi Robison & Babcock, 2011 G. yatesi
32 KUMIP 314054 Spence 8 Short, typical T4? 0.421 0.579 1.37 1.13 0.266 Glossopleura similaris(?) Catalog Glossopleura similaris (?)
33 Robison et al., 2015 fig. 88(L) Spence 8 Short, typical T3-T8 0.438 0.563 1.20 1.09 0.311 Glossopleura gigantea Robison et al., 2015 Glossopleura gigantea
34 Robison et al., 2015 fig. 88(R) Spence 8 Short, typical T3-T8 0.424 0.636 1.33 1.10 0.240 Glossopleura gigantea Robison et al., 2015 Glossopleura gigantea
35 USNM 96526 Spence ? ? ? 0.476 0.524 1.20 1.09 ? G. similaris Resser, 1939 G. similaris
36 USNM 62641 Spence ? ? ? 0.381 0.523 1.26 1.09 ? G. utahensis Resser, 1939 G. utahensis
37 FHPR 17094 Spence 7 Short, typical No 0.485 0.732 ? ? 0.247 New specimen - G. bion
38 Robison et al., 2015 fig. 86(L) Spence 7 Short, typical No 0.524 0.762 1.33 1.20 0.270 G. bion Robison et al., 2015 G. bion
39 Robison et al., 2015 fig. 86(R) Spence 7 Short, typical No 0.594 0.658 1.44 1.30 0.250 G. bion Robison et al., 2015 G. bion
40 USNM 62702 Stephen 7 Short, typical None preserved 0.389 0.600 1.19 1.06 0.269 Glossopleura stephenensis Resser, 1935 G. boccar
41 USNM 62703 Stephen 7 Short, typical None preserved 0.518 0.593 1.38 1.06 0.297 Glossopleura boccar Walcott, 1916 G. boccar
42 USNM uncataloged Gordon 8? Medium, all T6-T8? 0.428 0.660 1.29 1.12 0.275 Anoria baton Schwimmer, 1973 Anoria ? bessus
43 USNM uncataloged Gordon 7 Short, typical None preserved 0.418 0.567 1.23 1.11 0.293 Anoria baton Schwimmer, 1973 Glossopleura baton
44 USNM 62696 Gordon 7 Short, typical None preserved 0.383 0.433 1.50 1.25 0.284 Anoria baton Resser, 1935 Glossopleura baton
45 USNM 62699 Gordon(?) 7 Medium, all None preserved 0.298 0.483 1.23 0.94 0.354 Anoria bessus Walcott, 1916; Resser, 1935 Anoria ? bessus
46 SGDS 1975 Chisholm 7 Short, typical No 0.575 0.600 1.30 1.12 ? New Specimen - Glossopleura boccar
47 SGDS 1976 Chisholm ? ? ? 0.435 0.529 1.32 1.21 ? New Specimen - Glossopleura boccar
48 SGDS 1974 Chisholm 7 Short, typical T5(?), T7 0.543 0.435 ? ? ? New Specimen - Glossopleura boccar
49 SGDS 1973 Chisholm 7 Short, typical None preserved 0.546 0.522 ? ? ? New Specimen - Glossopleura boccar
50 LACMIP 10782 Monola 8 Short, typical None preserved 0.538 0.523 ? ? ? Sonoraspis nelsoni Stoyanow, 1958 Glossopleura mohavensis
51 USNM 116348 Arrojo 8 Short, typical None preserved ? ? ? ? ? Sonoraspis torresi Stoyanow, 1952 Glossopleura sp.
52 USNM 116334 Arrojo 8 Short, typical T3-T8 0.421 0.632 1.17 1.08 ? Sonoraspis gomezi Stoyanow, 1952 Glossopleura sp.
53 Poulsen, 1927 pl. 16, fig. 20 Cape Wood ? ? ? 0.526 0.632 1.44 1.30 ? Glossopleura walcotti Poulsen, 1927 Glossopleura walcotti
54 Poulsen, 1927 pl. 16, fig. 21 Cape Wood ? ? ? 0.560 0.640 1.33 1.23 ? Glossopleura walcotti Poulsen, 1927 Glossopleura walcotti
55 Poulsen, 1927 pl. 16, fig. 22 Cape Wood ? ? ? 0.611 0.611 1.20 1.09 ? Glossopleura walcotti Poulsen, 1927 Glossopleura walcotti
56 LACMIP 2469 Pole Canyon 8 Short, typical T1-T8 ? ? ? ? ? Sonoraspis californica Susuki and Lumsden, 1962 Glossopleura mohavensis
57 USNM 208256 Carrara ? ? ? 0.500 0.565 1.46 1.35 ? Glossopleura walcotti Palmer and Halley, 1979 Glossopleura walcotti
58 USNM 208258 Carrara ? ? ? 0.600 0.625 1.44 1.30 ? Glossopleura walcotti Palmer and Halley, 1979 Glossopleura walcotti
59 USNM 208250 Carrara ? ? ? 0.421 0.579 1.38 1.22 ? Glossopleura lodensis Palmer and Halley, 1979 Glossopleura lodensis
60 USNM 208251 Carrara ? ? ? 0.636 0.591 1.17 1.04 ? Glossopleura lodensis Palmer and Halley, 1979 Glossopleura lodensis

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