Macroevolution is integral to understanding the patterns of the diversification of life. As the life sciences increasingly use big data approaches, large multivariate datasets are required to test fundamental macroevolutionary hypotheses. In vertebrate evolution, large datasets have been created to quantify morphological variation, largely focusing on particular areas of the skeleton. We provide a landmarking protocol to quantify morphological variation in skeletal elements across the head, trunk, hindlimb and forelimb using 3-dimensional landmarks and semilandmarks, and present a large pan-skeletal database of bird morphology for 149 taxa across avian phylogeny using CT scan data. This large collection of 3D models and geometric morphometric data is open access and can be used in the future for new research, teaching and outreach. The 3D models and CT scans of the 149 specimens related to this project can be downloaded at MorphoSource (https://www.morphosource.org/projects/00000C420) 

Menura novaehollandiae FMNH 336751 View specimen

	M3#561 3D model of the left carpometacarpus of the superb lyrebird, Menura novaehollandia (displayed as a mirror image in the 3DHOP viewer). Type: "3D_surfaces" doi: 10.18563/m3.sf.561   state:published	Download 3D surface file
	M3#562 3D model of the mandible of the superb lyrebird, Menura novaehollandiae. Type: "3D_surfaces" doi: 10.18563/m3.sf.562   state:published	Download 3D surface file
	M3#563 3D model of the right coracoid of the superb lyrebird, Menura novaehollandiae. Type: "3D_surfaces" doi: 10.18563/m3.sf.563   state:published	Download 3D surface file
	M3#564 3D model of the right scapula of the superb lyrebird, Menura novaehollandiae. Type: "3D_surfaces" doi: 10.18563/m3.sf.564   state:published	Download 3D surface file
	M3#565 3D model of the right tarsometatarsus of the superb lyrebird, Menura novaehollandiae. Type: "3D_surfaces" doi: 10.18563/m3.sf.565   state:published	Download 3D surface file
	M3#566 3D model of the sternum of the superb lyrebird, Menura novaehollandiae. Type: "3D_surfaces" doi: 10.18563/m3.sf.566   state:published	Download 3D surface file
	M3#567 3D model of the left femur of the superb lyrebird, Menura novaehollandiae (displayed as a mirror image in the 3DHOP viewer). Type: "3D_surfaces" doi: 10.18563/m3.sf.567   state:published	Download 3D surface file
	M3#568 3D model of the skull of the superb lyrebird, Menura novaehollandiae. Type: "3D_surfaces" doi: 10.18563/m3.sf.568   state:published	Download 3D surface file
	M3#569 3D model of the left humerus of the superb lyrebird, Menura novaehollandiae (displayed as a mirror image in the 3DHOP viewer). Type: "3D_surfaces" doi: 10.18563/m3.sf.569   state:published	Download 3D surface file
	M3#570 3D model of the synsacrum of the superb lyrebird, Menura novaehollandiae. Type: "3D_surfaces" doi: 10.18563/m3.sf.570   state:published	Download 3D surface file
	M3#571 3D model of the left radius of the superb lyrebird, Menura novaehollandiae (displayed as a mirror image in the 3DHOP viewer). Type: "3D_surfaces" doi: 10.18563/m3.sf.571   state:published	Download 3D surface file
	M3#572 3D model of the left tibiotarsus of the superb lyrebird, Menura novaehollandiae (displayed as a mirror image in the 3DHOP viewer). Type: "3D_surfaces" doi: 10.18563/m3.sf.572   state:published	Download 3D surface file
	M3#573 3D model of the left ulna of the superb lyrebird, Menura novaehollandiae (displayed as a mirror image in the 3DHOP viewer). Type: "3D_surfaces" doi: 10.18563/m3.sf.573   state:published	Download 3D surface file

The present 3D Dataset contains the 3D models analyzed in "Neenan, J. M., Reich, T., Evers, S., Druckenmiller, P. S., Voeten, D. F. A. E., Choiniere, J. N., Barrett, P. M., Pierce, S. E. and Benson, R. B. J. Evolution of the sauropterygian labyrinth with increasingly pelagic lifestyles. Current Biology, 27." https://doi.org/10.1016/j.cub.2017.10.069 

Amblyrhynchus cristatus OUMNH 11616 View specimen

M3#322 Right labyrinth of Amblyrhynchus cristatus (OUMNH 11616). Type: "3D_surfaces" doi: 10.18563/m3.sf.322   state:published

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Augustasaurus hagdorni FMNH PR 1974 View specimen

M3#333 Right labyrinth model of Augustasaurus FMNH PR 1974 Type: "3D_surfaces" doi: 10.18563/m3.sf.333   state:published

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Callawayasaurus colombiensis UCMP V-38349 / UCMP V-125328 View specimen

M3#331 Composite left labyrinth of Callawayasaurus. The majority of the model is from the holotype (UCMP V-38349), but the anterior portion is formed from the right labyrinth (reflected) from the paratype (UCMP V-125328). Type: "3D_surfaces" doi: 10.18563/m3.sf.331   state:published

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Lepidochelys olivacea SMNS 11070 View specimen

M3#330 Left labyrinth model of Lepidochelys SMNS 11070 Type: "3D_surfaces" doi: 10.18563/m3.sf.330   state:published

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Macrochelys temminckii FMNH 22111 View specimen

M3#334 Left labyrinth model of Macrochelys FMNH 22111 Type: "3D_surfaces" doi: 10.18563/m3.sf.334   state:published

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Macroplata tenuiceps NHMUK R 5488 View specimen

M3#328 Left labyrinth of Macroplata NHMUK R 5488 Type: "3D_surfaces" doi: 10.18563/m3.sf.328   state:published

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Microcleidus homalospondylus NHMUK 36184 View specimen

M3#327 Right labyrinth model of Microcleidus NHMUK 36184 Type: "3D_surfaces" doi: 10.18563/m3.sf.327   state:published

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Nothosaurus sp. NME 16/4 View specimen

M3#326 Right labyrinth model of Nothosaurus sp. NME 16/4 Type: "3D_surfaces" doi: 10.18563/m3.sf.326   state:published

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Peloneustes philarchus NHMUK R 3803 View specimen

M3#325 Left labyrinth model of Peloneustes philarchus NHMUK R 3803 Type: "3D_surfaces" doi: 10.18563/m3.sf.325   state:published

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Placodus gigas UMO BT 13 View specimen

M3#324 Right labyrinth model of Placodus gigas UMO BT 13 Type: "3D_surfaces" doi: 10.18563/m3.sf.324   state:published

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Puppigerus camperi NHMUK R 38955 View specimen

M3#323 Left labyrinth model of Puppigerus NHMUK R 38955 Type: "3D_surfaces" doi: 10.18563/m3.sf.323   state:published

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Simosaurus gaillardoti GPIT RE/09313 View specimen

M3#332 Right labyrinth model of Simosaurus GPIT RE/09313 Type: "3D_surfaces" doi: 10.18563/m3.sf.332   state:published

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Libonectes morgani SMUSMP 69120 View specimen

M3#335 Right labyrinth model of Libonected morgani (SMUSMP 69120) Type: "3D_surfaces" doi: 10.18563/m3.sf.335   state:published

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