Table 1. Ophiuroid lateral arm plate counts of the Blake Nose samples.
| Section | Depth below surface (m) | Ophiacanthidae | Ophiuridae | Ophiolepididae | indeterminate |
| 1049C 12×4 141–142 | 145,21 | 1 | 0 | 0 | 0 |
| 1049C 12×4 144–145 | 145,24 | 0 | 0 | 0 | 2 |
| 1049C 12×4 145–146 | 145,25 | 1 | 0 | 0 | 0 |
| 1049C 12×4 146–147 | 145,26 | 1 | 0 | 0 | 1 |
| 1049C 12×4 147–148 | 145,27 | 0 | 1 | 0 | 0 |
| 1049C 12×4 148–149 | 145,28 | 1 | 5 | 0 | 7 |
| 1049C 12×4 149–150 | 145,29 | 14 | 6 | 3 | 5 |
| 104912×5 0–1 | 145,30 | 23 | 17 | 1 | 6 |
| 104912×5 1–2 | 145,31 | 32 | 17 | 3 | 4 |
| 104912×5 3–4 | 145,33 | 5 | 4 | 0 | 1 |
| 104912×5 4–5 | 145,34 | 2 | 6 | 3 | 0 |
| 104912×5 5–6 | 145,35 | 5 | 2 | 3 | 1 |
| 104912×5 6–7 | 145,36 | 4 | 2 | 0 | 1 |
| 104912×5 7–8 | 145,37 | 4 | 7 | 0 | 2 |
| 104912×5 8–9 | 145,38 | 19 | 11 | 6 | 3 |
| 104912×5 9–10 | 145,39 | 30 | 12 | 1 | 4 |
| 104912×5 10–11 | 145,40 | 29 | 7 | 1 | 1 |
| 104912×5 11–12 | 145,41 | 15 | 6 | 0 | 7 |
| 104912×5 12–13 | 145,42 | 20 | 6 | 1 | 1 |
| 104912×5 13–14 | 145,43 | 8 | 16 | 1 | 2 |
| 104912×5 14–15 | 145,44 | 7 | 19 | 3 | 3 |
| 104912×5 15–16 | 145,45 | 9 | 14 | 0 | 1 |
| 104912×5 16–17 | 145,46 | 3 | 11 | 0 | 4 |
| 104912×5 17–18 | 145,47 | 5 | 7 | 0 | 0 |
| 104912×5 18–19 | 145,48 | 16 | 6 | 0 | 7 |
| 104912×5 19–20 | 145,49 | 27 | 24 | 5 | 2 |
| 104912×5 20–21 | 145,50 | 4 | 12 | 1 | 7 |
| 104912×5 21–22 | 145,51 | 14 | 15 | 1 | 10 |
| 104912×5 22–23 | 145,52 | 6 | 5 | 4 | 8 |
| 104912×5 23–24 | 145,53 | 8 | 13 | 4 | 12 |
| 104912×5 24–25 | 145,54 | 5 | 7 | 11 | 4 |
| 104912×5 25–26 | 145,55 | 3 | 13 | 4 | 6 |
| 104912×5 26–27 | 145,56 | 1 | 10 | 0 | 13 |
| 104912×5 27–28 | 145,57 | 3 | 12 | 0 | 5 |
| 104912×5 28–29 | 145,58 | 3 | 10 | 0 | 3 |
| 104912×5 29–30 | 145,59 | 3 | 2 | 0 | 1 |
| 104912×5 39–40 | 145,69 | 22 | 23 | 3 | 9 |
| 104912×5 59–60 | 145,89 | 33 | 40 | 7 | 2 |
| 104912×5 99–100 | 146,29 | 7 | 4 | 5 | 2 |
| 104912×5 139–140 | 146,69 | 18 | 6 | 1 | 1 |
| 1049C 12×6 0–1 | 146,80 | 4 | 1 | 0 | 3 |
| 1049C 12×6 40–41 | 147,20 | 11 | 5 | 0 | 7 |
| 1049C 12×6 60–61 | 147,40 | 29 | 0 | 0 | 4 |
| 1049C 12×6 70–71 | 147,50 | 8 | 0 | 6 | 1 |
| 1049C 12×6 100–101 | 147,80 | 24 | 0 | 2 | 5 |
| 1049C 12×6 120–121 | 148,00 | 6 | 0 | 3 | 3 |
| 1049C 13×1 0–1 | 148,90 | 10 | 0 | 0 | 2 |
| 1049C 13×1 30–31 | 149,20 | 9 | 3 | 0 | 5 |
| 1049C 13×1 60–61 | 149,50 | 1 | 0 | 0 | 3 |
| 1049C 13×1 130–131 | 150,20 | 107 | 8 | 13 | 4 |
| 1049C 13×1 140–141 | 150,30 | 29 | 2 | 0 | 6 |
| 1049C 13×1 40–41 | 150,80 | 45 | 37 | 3 | 5 |
| 1049C 13×1 50–51 | 150,90 | 12 | 5 | 12 | 2 |
| 1049C 13×1 60–61 | 151,00 | 9 | 5 | 1 | 6 |
| 1049C 13×1 80–81 | 151,20 | 41 | 11 | 1 | 1 |
| 1049C 13×1 100–101 | 151,40 | 14 | 6 | 3 | 1 |
| 1049C 13×1 130–131 | 151,70 | 3 | 0 | 0 | 0 |
| 1049C 13×1 149–150 | 151,89 | 9 | 12 | 7 | 7 |
| 1049A 20×3 80–81 | 157,30 | 0 | 1 | 0 | 0 |
| 1049A 20×4 60–61 | 158,60 | 7 | 2 | 1 | 4 |
| 1049A 20×4 70–71 | 158,70 | 5 | 5 | 2 | 2 |
| 1049A 20×4 100–101 | 159,00 | 63 | 54 | 22 | 1 |
| 1049A 20×4 110–111 | 159,10 | 13 | 9 | 3 | 11 |
| 1049A 20×4 140–141 | 159,40 | 2 | 3 | 1 | 3 |
| 1049A 20×4 150–151 | 159,50 | 33 | 19 | 8 | 3 |
| 1049A 20×4 10–11 | 159,70 | 68 | 57 | 8 | 8 |
| 1049A 20×4 30–31 | 159,90 | 3 | 6 | 2 | 2 |
| 1049A 20×4 50–51 | 160,10 | 3 | 5 | 0 | 0 |
| Total | 979 | 634 | 170 | 247 |
Samples barren of ophiuroid remains were omitted; each sample represented 1 cm3.