Here is the order for the Nornova Dex, both Regional and National.
Regional Dex[]
1, 2, 3: Takion - Tanksau - Tansuidae
4, 5, 6: Totaa - Gemtoa - Gremilion
7, 8, 9: Bilri - Burrtel - Masfrio
10, 11: Rattata - Raticate
12, 13: Chunter - Nickter
14, 15: Birchomp - Corvassine
16, 17: Reincari - Piciglori
18, 19: Tailow - Swellow
20, 21, 22: Lilblu - Swablu - Altaria
23, 24, 25: Pichu - Pikachu - Raichu
26, 27, 28, 29: Eevee - Vaporeon - Jolteon - Flareon
30, 31, 32, 33: Espeon - Umbreon - Leafeon - Glaceon
34, 35: Speceon - Draceon
36, 37, 38: Gastly - Haunter - Gengar
39: Sableye
40: Almasil
41: Romawh
42: Gilidoyn
43, 44: Poochyena - Mightyena
45, 46, 47: Magnemite - Magneton - Magnezone
48, 49, 50: Tyaton - Tympatron - Tympantroad
51, 52, 53: Tympole - Palpitoad - Seismitoad
54, 55, 56: Grimer - Muk - Breatar
57, 58, 59: Koffing - Weezing - Choking
60, 61: Molodint - Triadint
62, 63: Betledye - Thoraxun
64, 65: Venonat - Venomoth
66: Hermone
67: Symbolen
68, 69, 70, 71: Burmy - Wormadam - Wormbelle - Mothim
72, 73: Pincion - Hexamind
74, 75: Chipster - Gamblean
76: Manamoth
77: Nocheye
78, 79: Magikarp - Gyarados
80, 81, 82: Wingull - Pelipper - Gullipper
83, 84, 85: Sunkern - Sunflora - Sunstress
86, 87: Onix - Steelix
88, 89: Slugma - Magcargo
90, 91: Omanyte - Omastar
92, 93: Kabuto - Kabutops
94: Topsee
95, 96, 97: Poiless - Poisseer - Toxician
98, 99: Shuckle - Crobuckle
100, 101: Gerbung - Gearactor
102, 103: Barbrab - Tharapick
104: Potpouin
105: Torchre
106, 107: Ician - Frogarem
108, 109: Aipom - Ambipom
110, 111, 112: Toytop - Shellic - Roundacle
113: Bullvy
114, 115, 116, 117: Smoochum - Jynx - Cicice - Rougeogue
118, 119, 120, 121: Elekid - Electabuzz - Electivire - Elecdagg
122, 123, 124, 125: Magby - Magmar - Magmortar - Magmana
126, 127, 128, 129: Tyrogue - Hitmonlee - Hitmonchan - Hitmontop
130, 131, 132: Abra - Kadabra - Alakazam
133, 134: Galewin - Birdstrom
135: Tomash
136: Tilerex
137, 138, 139: Nimbomb - Stratobowl - Rambostratus
140, 141, 142: Spindlewe - Ronjab - Thoxicon
143: Spectipede, Bug/Ghost Legendary
144: Arachnisis, Bug/Psychic Legendary
145: Jollos, Legendary
146: Bullion, Legendary
147: Tykogi, Legendary
148: Taloraptor, "Frozen-Raptor Pokemon" event legendary
149: Pulviban, "Crab Cannon Pokemon" event legendary
150: Zelliontul, "Omega Pokemon" event legendary
Nornova Mega Evolutions[]
After beating the Elite Four, catching Jollos/Bullion/Tykogi, and obtaining the National Dex, a new secret is revealed: Saber secretely continued research on from the Scholars' findings about the hidden potential of Pokemon, and created an artificial way of releasing their potential.
Mega Butterfree (exclusive to Aqua; if Female in Titanium)
Mega Beedrill (exclusive to Tan; if Male in Titanium)
Mega Escavalier (exclusive to Aqua; if Female in Titanium)
Mega Accelgor (exclusive to Tan; if Male in Titanium)
National Dex[]
650: Takion, Grass type Wild Pig Pokemon
651: Tanksau, Grass/Steel type Armored Boar Pokemon
652: Tansuidae, Grass/Steel type Tank Boar Pokemon
653: Totaa, Fire type Mischief Pokemon
654: Gemtoa, Fire/Dark type Magical Imp Pokemon
655: Gremilion, Fire/Dark type Tiki Imp Pokemon
656: Bilri, Water type Wolf Pup Pokemon
657: Burrtel, Water type Wolf Pokemon
658: Masfrio, Water/Ice type Arctic Wolf Pokemon
659: Chunter, Normal/Grass type Murmuring Beaver Pokemon
660: Nickter, Water/Grass type Sonic Beaver Pokemon
661: Birchomp, Poison/Flying type Crow Pokemon
662: Corvassine, Poison/Flying type Carrion Crow Pokemon
663: Reincari, Grass/Flying type Nest Pokemon
664: Piciglori, Grass/Flying type Rainbow Toucan Pokemon
665: Lilblu, Normal/Flying type Little Bird Pokemon
666: Speceon, Ghost type Specter Pokemon
667: Draceon, Dragon type Dragon Star Pokemon
668: Almasil, Ghost type Guardian Spirit Pokemon
669: Romawh, Fighting type Guardian Fighter Pokemon
670: Gilidoyn, Dark type Guardian Monster Pokemon
671: Tyaton, Water/Electric type Magnetic Tadpole Pokemon
672: Tympatron, Water/Electric type Magnetic Vibration Pokemon
673: Tympantroad, Water/Electric type Magnetic Mutation Pokemon
674: Breatar, Poison/Rock type Tar Pokemon
675: Choking, Poison/Rock type Fuming Pokemon
676: Molodint, Water/Dragon type Narwhal Pokemon
677: Triadint, Water/Dragon type Narwhal Pokemon
678: Betledye, Bug/Dragon type Thick Bug Pokemon
679: Thoraxun, Bug/Dragon type Dragon Bug Pokemon
680: Hermone, Rock/Water type Anemone Pokemon
681: Symbolen, Dark/Psychic type Ancient Symbol Pokemon
682: Wormbelle, Bug/(Grass, Ground, Steel) type Elegant Worm Pokemon
683: Pincion, Bug/Dark type Minion Pokemon
684: Hexamind, Bug/Dark type Mastermind Pokemon
685: Chipster, Electric/Dark type Poker Chip Pokemon
686: Gamblean, Electric/Steel type Slot Machine Pokemon
687: Manamoth, Ground/Dark type Wasteland Behemoth Pokemon
688: Nocheye, Normal/Ghost type Tentacled Monster Pokemon
689: Gullipper, Water/Flying type Soaring Bird Pokemon
690: Sunstress, Grass/Fire type Sun Power Pokemon
691: Topsee, Fire/Steel type Dizzy Pokemon
692: Poiless, Poison type Apprentice Pokemon
693: Poisseer, Poison/Rock type Journeyman Pokemon
694: Toxician, Poison/Psychic type Physician Pokemon
695: Crobuckle, Bug/Rock type Rough Mold Pokemon
696: Gerbung, Steel type Flawed Machine Pokemon
697: Gearactor, Steel type Powerful Machine Pokemon
698: Barbrab, Steel type Spiked Ball Pokemon
699: Tharapick, Steel/Ground type Rough Helmet Pokemon
700: Potpouin, Grass/Ice type Potpourri Pokemon
701: Torchre, Grass/Fire type Oil Torch Pokemon
702: Ician, Ice/Fighting type Ice Statue Pokemon
703: Frogarem, Ice/Fighting type Ice Statue Pokemon
704: Toytop, Ground type Little Top Pokemon
705: Shellic, Ice/Ground type Shell Top Pokemon
706: Roundacle, Ice/Ground type Shell Top Pokemon
707: Bullvy, Ground/Rock type Gorgon Bull Pokemon
708: Cicice, Ice/Psychic type Enchantress Pokemon
709: Rougeogue, Ice/Dark type Rogue Pokemon
710: Elecdagg, Electric/Fighting type Brawler Pokemon
711: Magmana, Fire/Psychic type Fire Blast Pokemon
712: Galewin, Water type Water Bird Pokemon
713: Birdstrom, Ice/Electric type Thunderbird Pokemon
714: Tomash, Ghost/Dragon type Dragon Golem Pokemon
715: Tilerex, Steel/Dragon type Wire Dragon Pokemon
716: Nimbomb, Electric type Cloud Pokemon
717: Stratobowl, Electric/Fighting type Stormcloud Pokemon
718: Rambostratus, Electric/Fighting type Lightning Striker Pokemon
719: Spindlewe, Bug type Bob and Weave Pokemon
720: Ronjab, Bug/Fighting type Strong Bug Pokemon
721: Thoxicon, Bug/Fighting type Fighting Millipede Pokemon
722: Spectipede, Bug/Ghost type Death Pokemon
723: Arachnisis, Bug/Psychic type Life Pokemon
724: Jollos, Grass/Psychic type Nuturing Scholar Pokemon
725: Bullion, Rock/Psychic type Hardy Scholar Pokemon
726: Tykogi, Dragon/Psychic type Determined Scholar Pokemon
727: Taloraptor, Dark/Ice type Frozen Raptor Pokemon
728: Pulviban, Water/Steel type Crab Cannon Pokemon
729: Zelliontul, Ghost type Omega Pokemon