You cannot activate this card if you have no "Neo-Spacian" monsters in your Graveyard and/or no "Chrysalis" monsters in your Deck.
You cannot activate this card if there are fewer "Chrysalis" monsters in your Deck than there are "Neo-Spacian" monsters with different names in your Graveyard.
You cannot activate this card if you have fewer open Monster Card Zones than the number of "Neo-Spacian" monsters with different names in your Graveyard.
"Neo-Spacian Marine Dolphin" counts as 2 "Neo-Spacian" monsters with different names for this card's effect. If you have 1 "Neo-Spacian Marine Dolphin" in your Graveyard, you can Special Summon 2 "Chrysalis" monsters from your Deck.