Data from: Ontogeny, morphology and taxonomy of the soft-bodied Cambrian ‘mollusc’ Wiwaxia

 

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Title SEM of NMNH229901
Downloaded 201 times
Description The smallest known specimen of _Wiwaxia corrugata_; relative to body length, dorsal sclerites are vast
Download 229901_0056.g.tif (1.119 Mb)
Download README.pdf (2.120 Mb)
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Title Micrograph of NMNH229901
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Description Low-quality light micrograph of 229901. For scale please see accompanying SEM.
Download USNM_229901_X31_006.tif (8.944 Mb)
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Title SEM close-up of NMNH 229901, showing two sclerites
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Download 229901_0058.tif (1.411 Mb)
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Title SEM enlargement of NMNH 229901, showing pustules on sclerites
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Download 229901_0059.tif (1.411 Mb)
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Title SEM enlargement of NMNH 229901, showing relief
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Description BSE in shadow mode.
Download 229901_0060.tif (1.411 Mb)
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Title SEM enlargement of NMNH 229901, showing sclerite with longitudinal pyrite crystals
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Download 229901_0061.g2.tif (1.073 Mb)
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Title SEM enlargement of NMNH 229901 (posterior)
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Description Showing ventral sclerites
Download 229901_0062.g.tif (1.092 Mb)
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Title SEM of NMNH194274
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Description Specimen length ~5mm; dorsal scleritome well preserved, showing ribbing patterns and arrangement of sclerites. Backscatter (compo)
Download 194724_0041.g.tif (1.145 Mb)
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Title SEM of NMNH194274 (BSE - shadow)
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Description Specimen length ~5mm; dorsal scleritome well preserved, showing ribbing patterns and arrangement of sclerites. Backscatter (shadow)
Download 194724_0042.g.tif (1.132 Mb)
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Title SEM of NMNH199969 - isolated sclerite containing acicular pyrite
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Download 199969_0080.g.tif (1.452 Mb)
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Title SEM enlargement of NMNH199969 - tip of isolated sclerite containing acicular pyrite
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Download 199969_0082.g.tif (1.290 Mb)
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Title SEM of NMNH198674, showing acicular pyrite in sclerites
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Download 198674_0112.g.tif (1.251 Mb)
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Title SEM of NMNH198674, showing acicular pyrite in sclerites - wide field of view
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Download 198674_0117.g.tif (1.193 Mb)
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Title SEM of NMNH198674, showing acicular pyrite in sclerites - wider field of view
Downloaded 21 times
Description Note three-dimensionality of specimen; lower sclerites are out of focus.
Download 198674_0116.g.tif (992.5 Kb)
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Title SEM enlargement of NMNH198674, showing well-developed acicular crystals (Fig. 2D)
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Download 198674_0113.g.tif (1.187 Mb)
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Title SEM enlargement of NMNH198674, showing well-developed acicular crystals in multiple sclerites (Fig. 2D)
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Download 198674_0115.g.tif (1.232 Mb)
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Title SEM enlargement of NMNH198674, showing distribution of acicular crystals in sclerite ribs
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Download 198674_0125.g.tif (1.388 Mb)
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Title SEM of NMNH198674, showing sclerites with varying degrees of pyritization; cf. Fig. 2E
Downloaded 19 times
Description Region of Fig. 2E in top centre of image
Download 198674_0127.g.tif (1.279 Mb)
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Title SEM enlargement of NMNH198674, showing lineations in carbon parallel to acicular pyrite crystals (Fig 2A)
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Download 198674_0131.g.tif (1.224 Mb)
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Title SEM enlargement of NMNH198674, showing lineations in carbon parallel to acicular pyrite crystals (Fig 2B)
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Download 198674_0130.g.tif (1.105 Mb)
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Title SEM of NMNH198662, isolated Wiwaxia sclerite
Downloaded 23 times
Description Showing acicular pyrite and later spheroidal overgrowths; note the shape of the end of the sclerite. The microvillar fabric, although not evident in the carbon film, is picked out by the pyrite needles.
Download NMNH198662_001.g.tif (5.982 Mb)
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Title SEM of Burgessochaeta, NMNH198634 (Fig. 2G)
Downloaded 22 times
Description Note the framboidal form of pyrite in chaetae.
Download 198634_627.g.tif (7.600 Mb)
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Title SEM enlargement of Burgessochaeta, NMNH198634 (Fig. 2H)
Downloaded 20 times
Download 198634_630.g.tif (7.425 Mb)
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Title SEM of Burgessochaeta, NMNH198634
Downloaded 17 times
Description Further chaetae with similar preservation
Download NMNH198634_620.g.tif (3.280 Mb)
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Title SEM enlargement of Burgessochaeta, NMNH198634, showing framboidal pyrite in chaetae
Downloaded 22 times
Download 198634_618.g.tif (3.292 Mb)
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Title Chaetae of a typical Canadia specimen (NMNH199771); SEM
Downloaded 17 times
Description Chaetae are replaced by 'massive' pyrite with no obvious crystals. Note that occasional Wiwaxia specimens showed a similar preservational style.
Download 199771_803.g.tif (3.302 Mb)
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Title Part of ROM57195, Wiwaxia, containing amorphous pyrite
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Description Emphasizing that pyrite is not always associated with an acicular habit.
Download ROM57195.g.tif (3.865 Mb)
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Title ROM 57195 (Fig. 3A), colour image highlighting pyritization
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Download ROM 57195.JPG (1.357 Mb)
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Title ROM 61512 (Fig. 3B) – 'juvenile' specimen, partly enrolled (colour image file)
Downloaded 54 times
Download WT90-0185_614 615.grainextract.JPG (8.976 Mb)
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Title ROM 61649 (Fig. 3D) – Juvenile specimen with faint trace of foot
Downloaded 64 times
Description Juvenile specimen, preserved sublaterally; mouthparts are visible to anterior, with dark transverse trace underneath, interpreted as anterior margin of foot. See also wet image.
Download ROM 61649 dry.g.JPG (3.140 Mb)
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Title ROM 61649 (Fig. 3D) – Juvenile specimen with faint trace of foot (wet)
Downloaded 95 times
Description Juvenile specimen, preserved sublaterally; mouthparts are visible to anterior, with dark transverse trace underneath, interpreted as anterior margin of foot. See also dry image.
Download ROM 61649 wet.g.JPG (3.583 Mb)
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Title ROM 61151 (Fig. 3G) – Mature specimen, with incipient spines, and partial scleritome exposing underlying tissue
Downloaded 73 times
Download WQ00-1886_657g ge 658g.g.JPG (9.787 Mb)
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Title ROM 62273 (Fig. 3I) – posterior portion of specimen (dorsal view), showing imbrication of ventral sclerites
Downloaded 45 times
Download WT90-1446_452.g.JPG (5.366 Mb)
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Title ROM 56965 (Fig. 5A) – partially disaggregated scleritome
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Download ROM 56965_652.g.JPG (12.98 Mb)
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Title USNM 199953 (Fig. 5B) – lateral group of sclerites
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Download USNM 199953.g.tif (9.005 Mb)
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Title ROM 61510 (Fig. 5C) – showing depth of scleritome
Downloaded 291 times
Download 98-1116B ROM 61510_953.g.JPG (5.979 Mb)
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Title ROM 61510 (counterpart)
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Description The plane of splitting passed close to the dorsal surface – hence the depth of sclerites on the part, and the spaces between sclerites on this counterpart.
Download ROM 61510.g.JPG (5.542 Mb)
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Title 3D model of Wiwaxia infant (Fig. 6A)
Downloaded 25 times
Description 3D model file used to generate Figure 6A. Blender file format (blender.org).
Download Wiwaxia infant.blend (1.693 Mb)
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Title 3D model of Wiwaxia juvenile (Fig. 6B)
Downloaded 29 times
Description 3D model file used to generate Figure 6B. Blender file format (blender.org).
Download Wiwaxia juvenile.blend (1.066 Mb)
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Title 3D model of mature Wiwaxia (Fig. 6C)
Downloaded 38 times
Description 3D model file used to generate Figure 6C. Blender file format (blender.org).
Download Wiwaxia mature.blend (1.144 Mb)
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Title NMNH 200101 (Fig. 7A) – "moulting" specimen
Downloaded 17 times
Description Note that gut (pinker) can be traced along length of specimen. Mouthparts are only visible in the anterior of the specimen.
Download NMNH 200101_003.g.tif (9.557 Mb)
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Title NMNH 200101 (Fig. 7A) – Interference image
Downloaded 14 times
Description Interference image highlights distinct preservation of gut, confirming its continuity into the posterior of the specimen. The pronounced nature of the mouthparts heightens confidence that there are genuinely no mouthparts further posteriad.
Download USNM_200101p_X8_003-BexR.g2.tif (6.789 Mb)
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Title NMNH 200101 – SEM of anterior region showing mouthparts
Downloaded 21 times
Description Mouthparts stand out as carbon films.
Download 200101cp_0035.tif (1.411 Mb)
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Title NMNH 200101 – SEM of posterior region
Downloaded 16 times
Description Sclerites are picked out by faint pyrite layer, but carbonaceous mouthparts are demonstrably absent.
Download 200101cp_0034.tif (1.411 Mb)
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Title ROM 61701 (Fig. 7B) – showing axial trace (gut)
Downloaded 56 times
Download ROM 61701_666.g.JPG (9.440 Mb)
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Title ROM 61515 (Fig. 7C) – Odontogriphus
Downloaded 74 times
Download WQ94-1498A_719 gex 720.JPG (10.56 Mb)
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Title ROM 57714 (Fig. 7D) – Odontogriphus
Downloaded 72 times
Description Showing mouthparts and gut
Download WQ95-2130 ROM 57714_616 div 617.g.JPG (13.17 Mb)
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Title ROM_57715 (Fig. 7E) – Odontogriphus, partially decayed specimen
Downloaded 56 times
Download ROM_57715.g.JPG (11.32 Mb)
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Title ROM 61519 (Fig. 8A) – Wiwaxia, terminal view, showing foot
Downloaded 54 times
Download WQ00-1260B_670.g2.JPG (12.03 Mb)
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Title ROM 57723 (Fig. 8C) – Odontogriphus
Downloaded 98 times
Download WQ99-0699A ROM 57723_639g gm 638.JPG (11.87 Mb)
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Title ROM 57723 (Fig. 8C, enlargement) – Odontogriphus foot, showing transverse lines
Downloaded 90 times
Download WQ99-0699A ROM 57723_641.g.JPG (10.18 Mb)
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Title ROM 57725 (Fig. 8D) – Odontogriphus
Downloaded 70 times
Download WQ95-1050A_174+175col.JPG (6.417 Mb)
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Title ROM 57725 (Fig. 8D) – Odontogriphus, lit to emphasize longitudinal lineations in medial region
Downloaded 139 times
Download ROM 57725_175.g.JPG (6.028 Mb)
Download README.pdf (2.120 Mb)
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When using this data, please cite the original publication:

Smith MR (2013) Ontogeny, morphology and taxonomy of the soft-bodied Cambrian ‘mollusc’ Wiwaxia. Palaeontology 57(1): 215–229. http://dx.doi.org/10.1111/pala.12063

Additionally, please cite the Dryad data package:

Smith MR (2013) Data from: Ontogeny, morphology and taxonomy of the soft-bodied Cambrian ‘mollusc’ Wiwaxia. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.868sm
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