| Name | ECO | Main line length |
| Pterodactyl Defense: Queen Pterodactyl, Quiet Line | A40 | 7 plies |
| Pterodactyl Defense: Eastern, Benoni | B06 | 7 plies |
| Pterodactyl Defense: Eastern, Anhanguera | B06 | 7 plies |
| Pterodactyl Defense: Austrian, Pteranodon | B06 | 8 plies |
| Pterodactyl Defense: Central, Benoni Pterodactyl | A40 | 8 plies |
| Pterodactyl Defense: Fianchetto, Queen Benoni Pterodactyl | A40 | 8 plies |
| Pterodactyl Defense: Eastern, Benoni Pterodactyl | B06 | 8 plies |
| Pterodactyl Defense: Western, Pterodactyl | B27 | 8 plies |
| Pterodactyl Defense: Fianchetto, King Pterodactyl | B06 | 8 plies |
| Pterodactyl Defense: Austrian, Austriadactylus Western | B06 | 8 plies |
| Pterodactyl Defense: Austrian, Grand Prix Pterodactyl | B06 | 8 plies |
| Pterodactyl Defense: Fianchetto, Queen Pterodactyl | A40 | 8 plies |
| Pterodactyl Defense: Western, Anhanguera | B06 | 8 plies |
| Pterodactyl Defense: Eastern, Rhamphorhynchus | B06 | 8 plies |
| Pterodactyl Defense: Fianchetto, Rhamphorhynchus | B06 | 8 plies |
| Pterodactyl Defense: Western, Rhamphorhynchus | B27 | 8 plies |
| Pterodactyl Defense: Sicilian, Benoni Gambit | B27 | 9 plies |
| Pterodactyl Defense: Sicilian, Siroccopteryx | B06 | 9 plies |
| Pterodactyl Defense: Sicilian, Unpin | B27 | 9 plies |
| Pterodactyl Defense: Sicilian, Anhanguera | B27 | 9 plies |
| Pterodactyl Defense: Central, Benoni Quetzalcoatlus | B06 | 10 plies |
| Pterodactyl Defense: Central, Anhanguera | B06 | 10 plies |
| Pterodactyl Defense: Sicilian, Rhamphorhynchus | B27 | 9 plies |
| Pterodactyl Defense: Central, Bogolubovia | A42 | 10 plies |
| Pterodactyl Defense | A42 | 10 plies |
| Pterodactyl Defense: Sicilian, Quetzalcoatlus | B06 | 10 plies |
| Pterodactyl Defense: Central, Quetzalcoatlus Gambit | B06 | 10 plies |
| Pterodactyl Defense: Fianchetto, Queen Pteranodon | A40 | 10 plies |
| Pterodactyl Defense: Eastern, Benoni Pteranodon | B06 | 10 plies |
| Pterodactyl Defense: Western, Siroccopteryx | B06 | 10 plies |
| Pterodactyl Defense: Eastern, Pteranodon | B06 | 10 plies |
| Pterodactyl Defense: Central, Benoni Beefeater Pterodactyl | A40 | 12 plies |
| Pterodactyl Defense: Sicilian, Pteranodon | B27 | 11 plies |