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Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece and leave with the element ID LEGO asks for, or a link to buy the part.

Mighty Dinosaurs - Blue Version

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77941 Mighty Dinosaurs - Blue Version

174 pieces in 68 part and color combinations.

Before you call it missing

Builders who report a missing piece often find it in one of these places. Tick each one off as you look.

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Piece checklist

Dark Blue 49 pieces

  • Brick 1 x 2 Dark Blue Part 3004 Element 4249891 ×2
  • Brick 2 x 2 Dark Blue Part 3003 Element 4296785 or 4264580 ×3
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Blue Part 11477 Element 6554198 or 6094143 ×2
  • Brick Curved 2 x 2 x 2/3 Dark Blue Part 15068 Element 6554196 or 6061569 ×4
  • Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] Dark Blue Part 11153 Element 6580395 or 6554195 ×6
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Blue Part 54200 Element 4504374 or 4502092 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin Dark Blue Part 3040b Element 6103405 or 4615996 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Dark Blue Part 3660 Element 6025375 or 4590785 ×2
  • Brick Wedged, Curved 6 x 4 Triple Dark Blue Part 43712 Element 6621863 or 6598992 ×1
  • Plate 1 x 1 Dark Blue Part 3024 Element 6554188 or 4184108 ×2
  • Plate 1 x 2 Dark Blue Part 3023 Element 6554191 or 4528981 ×4
  • Plate 2 x 2 Dark Blue Part 3022 Element 6037890 or 4528982 ×2
  • Plate 2 x 4 Dark Blue Part 3020 Element 6554194 or 4667595 ×3
  • Plate Round Corner 3 x 3 Dark Blue Part 30357 Element 6251836 or 4614554 ×4
  • Plate Special 1 x 2 with Pin Hole on Top Dark Blue Part 11458 Element 6223838 ×2
  • Wedge Plate 4 x 2 Left Dark Blue Part 41770 Element 4529954 or 4247065 ×3
  • Wedge Plate 4 x 2 Right Dark Blue Part 41769 Element 4502091 or 4247066 ×3

Sand Blue 25 pieces

  • Brick 1 x 4 Sand Blue Part 3010 Element 4620993 or 4187074 ×2
  • Plate 1 x 2 Sand Blue Part 3023 Element 6198156 or 4167468 ×8
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Sand Blue Part 4032a Element 6364365 or 4169479 ×1
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Sand Blue Part 60478 Element 6373310 ×3
  • Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole Sand Blue Part 92013 Element 6373308 ×4
  • Tile Special 1 x 1 with Clip with Rounded Edges Sand Blue Part 15712 Element 6364367 ×4
  • Wedge Plate 3 x 2 Left Sand Blue Part 43723 Element 6373305 or 4224013 ×1
  • Wedge Plate 3 x 2 Right Sand Blue Part 43722 Element 6373307 or 4224012 ×1
  • Wheel Arch, Curved Wedge 4 x 3 with 2 x 2 Opening and 4 Studs Sand Blue Part 47755 Element 6373304 ×1

Black 22 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium Black Part 87747 Element 6270091 or 4563477 ×6
  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Black Part 53451 Element 6270103 or 4568385 ×4
  • Bar 3L Black Part 87994 Element 6185316 or 6093525 ×1
  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×2
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Black Part 4081b Element 6281993 or 4632571 ×4
  • Plate Special 1 x 2 with Clip Horizontal on End Black Part 63868 Element 6336989 or 4535739 ×1
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Black Part 60470b Element 6310268 or 4556158 ×2
  • Technic Ball Joint with Through Axle Hole Black Part 53585 Element 4286267 ×2

White 18 pieces

  • Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End Section White Part 40379 Element 6110023 or 4508454 ×3
  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium White Part 87747 Element 6270092 or 4613941 ×2
  • Bar 4L (Lightsaber Blade / Wand) White Part 30374 Element 6116602 or 4129836 ×1
  • Bar Holder with Clip White Part 11090 Element 6341465 or 6136789 ×5
  • Plate Special 1 x 2 with Three Teeth [Tri-Tooth] White Part 15208 Element 6046381 ×7

Bright Light Yellow 17 pieces

  • Brick 2 x 4 Bright Light Yellow Part 3001 Element 6373312 or 6117319 ×1
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Bright Light Yellow Part 11477 Element 6147726 ×2
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Bright Light Yellow Part 3747b Element 6373306 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Bright Light Yellow Part 3660 Element 6373311 ×2
  • Brick Special 1 x 2 with Studs on 2 Sides Bright Light Yellow Part 52107 Element 6296512 ×3
  • Plate 1 x 4 Bright Light Yellow Part 3710 Element 6554799 or 6248756 ×2
  • Plate 2 x 3 Bright Light Yellow Part 3021 Element 6585256 or 6293288 ×2
  • Plate 2 x 4 Bright Light Yellow Part 3020 Element 6554802 or 6296524 ×1
  • Plate 2 x 6 Bright Light Yellow Part 3795 Element 6175294 ×1
  • Tile 1 x 4 with Groove Bright Light Yellow Part 2431 Element 6289722 or 4240672 ×2

Dark Bluish Gray 16 pieces

  • Hinge Plate 1 x 2 Locking with 1 Finger On Top Dark Bluish Gray Part 30383 Element 6265693 or 4210726 ×2
  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, without Groove, 7 Teeth Dark Bluish Gray Part 54657 Element 6267047 ×2
  • Large Figure Skeletal, Joint Extender [High Friction] Dark Bluish Gray Part 74261 Element 6314448 or 6106472 ×2
  • Plate Special 1 x 2 with 5.9mm Centre Side Towball Dark Bluish Gray Part 14417 Element 6414560 or 6338160 ×5
  • Pneumatic Hose Connector with Axle Connector Dark Bluish Gray Part 99021 Element 6265669 or 6020189 ×2
  • Technic Brick 1 x 2 with Hole and Dual Beam Extensions Dark Bluish Gray Part 85943 Element 6324639 or 4547958 ×2
  • Technic Brick Special 2 x 2 with 10.2mm Balls with Holes and Axle Hole Dark Bluish Gray Part 17114 Element 6065816 ×1

Light Bluish Gray 10 pieces

  • Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side Light Bluish Gray Part 22885 Element 6123809 ×1
  • Plate Special 1 x 2 5.9mm Centre Side Towball Socket Light Bluish Gray Part 14704 Element 6414561 or 6338165 ×2
  • Plate Special 1 x 2 5.9mm Towball Socket Light Bluish Gray Part 14418 Element 6414556 or 6338163 ×3
  • Plate Special 1 x 2 with Clip Horizontal on Side Light Bluish Gray Part 11476 Element 6313114 or 6028812 ×2
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 ×2

Tan 4 pieces

  • Brick Special 1 x 1 with Studs on 2 Adjacent Sides Tan Part 26604 Element 6175968 ×4

Trans-Red 4 pieces

  • Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki Eye Trans-Red Part 58176 Element 6507867 or 6171762 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 ×2

Yellow 4 pieces

  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Yellow Part 60897 Element 6348065 or 4613258 ×4

Lavender 3 pieces

  • Plate 1 x 2 Lavender Part 3023 Element 6099190 or 6015122 ×2
  • Tile 1 x 4 with Groove Lavender Part 2431 Element 6101169 ×1

Red 2 pieces

  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×2

Tick each piece as you find it, or mark it missing.

When a piece really is missing

Ask LEGO

LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for the set number and each piece's element ID, the number printed beside the piece in the parts list at the back of the instructions. This checker lists both.

Request a replacement from LEGO

Buy the piece

Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from older or second-hand sets.

Keep a record

Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.

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