Table 4. Summary of taxonomic incongruences, morphological variability, and potential cryptic diversity cases.
| Species ID | Putative species | Sequence ID (Field ID) | Region | Depth range (m) | Water mass |
|---|---|---|---|---|---|
| Taxonomic incongruences | |||||
| Dia06 (Fig. 11C) |
Diastylis polaris
aka ’Diastylis stygia’ |
seq39 | Jan Mayen (Norway) | 2,542 | Arctic, Subarctic |
| seq40 | Eggakanten (Norway) | 2,241 | Subarctic | ||
| ICE1-Dia003, ICE1-Dia006, ICE1-Dia009 | Norwegian Sea Basin | 1,819 | Subarctic | ||
| ICE1-Dia010, ICE1-Dia016 | East Greenland Denmark Strait | 1,281 | Arctic, Subarctic | ||
| ICE1-Dia019 | North-East Iceland Norwegian Sea | 1,574 | Subarctic | ||
| Lam13 (Fig. 11E) |
Platysympus typicus
aka ’Platysympus tricarinatus’ |
ICE1-Lam004 | East Greenland Denmark Strait | 315 | Arctic, Subarctic |
| ICE1-Lam016 | South Iceland Irminger Basin | 1,593 | North Atlantic | ||
| seq89 | Svalbard | 497 | Arctic | ||
| seq90 | Continental Shelf (Norway) | 224 | North Atlantic | ||
| Morphological variability | |||||
| Dia14 (Fig. 11B) & Dia16-B (Fig. 11A) |
Leptostylis ampullacea | ICE1-Dia018, ICE1-Dia002, ICE1-Dia005, ICE1-Dia008, ICE1-Dia001, ICE1-Dia004, ICE1-Dia007, ICE1-Dia013, ICE1-Dia014 | North East Iceland | 700–1,500 | Arctic, Subarctic |
| Leptostylis cf. longimana B | P-Dias001, P-Dias002, P-Dias028, P-Dias032, P-Dias007, P-Dias027, P-Dias031, P-Dias003, P-Dias029, P-Dias030 | Yermak-Plateau (Svalbard) | 700–1,500 | Arctic | |
| Leu08 & Leu09 (Fig. S2W) |
Leucon nathorsti | seq72, seq 73 | Fanafjorden, Skagerak | 180–246 | North Atlantic |
| Leucon aff. nathorsti | seq75 | Svalbard | 56 | Subarctic | |
| Morphological & molecular data: cryptic diversity | |||||
| Leu04-A/-B/-C (Fig. S2U) |
Eudorella truncatula A | seq64, seq67 | Skagerak | 250 | North Atlantic |
| Eudorella truncatula B | seq65, seq68 | Fensfjorden, Hjeltefjorden | 200–400 | North Atlantic | |
| Eudorella truncatula C | seq69 | Northern Norway | 800 | Subarctic | |
| Bod05-A/-B (Fig. 13E) |
Cyclaspis longicaudata A | seq2, seq3 | Hjeltefjorden | 240–330 | North Atlantic |
| Cyclaspis longicaudata B | ICE1-Bod001, ICE1-Bod002 | South Iceland Basin | 2,500 | North Atlantic | |
| Dia15-A/-B (Fig. 12A) |
Leptostylis borealis A | ICE1-Dia015 | Greenland shelf | 300 | Subarctic |
| Leptostylis borealis B | ICE1-Dia017 | North East Iceland | 500 | Subarctic | |
| Dia17-A/-B (Fig. S2L) |
Leptostylis sp. 1 A | ICE1-Dia012 | South Iceland Basin | 2,500 | North Atlantic |
| Leptostylis sp. 1 B | ICE1-Dia025 | South Iceland Basin | 2,500 | North Atlantic | |
| Dia16-A/-B (Fig. 11A) |
Leptostylis cf. longimana B | P-Dias001, P-Dias002, P-Dias028, P-Dias032, P-Dias007, P-Dias027, P-Dias031, P-Dias003, P-Dias029, P-Dias030 | Yermak-Plateau (Svalbard) | 700–1,500 | Arctic, Subarctic |
| Leptostylis longimana A | seq52, seq53 | Sognesjøen & Skagerak | 500 | North Atlantic | |
| Lam05-A/-B (Fig. 11F) |
Hemilamprops cristatus/Hemilamprops cf. cristatus | seq81, seq82, ICE1-Lam018 | Skagerak & Greenland slope | 700 | North Atlantic, Subarctic |
| Lam05-B (Fig. 11F) |
Hemilamprops cf. cristatus | ICE1-Lam002, ICE1-Lam008 | South Iceland Basin | 2,500 | North Atlantic |