Palaeoscolecid worms are a ubiquitous group of Early Palaeozoic ecdysozoans that are curiously lacking in the archetypal Cambrian Lagerstätten, the Burgess Shale. Here I describe Scathascolex minor gen. et sp. nov, the first unequivocal palaeoscolecid from this site. Scathascolex is armoured with simple Hadimopanella-like plates, but lacks smaller platelets, pointing to a close affinity with the Palaeoscolecida sensu stricto. Neither preservational nor environmental factors account for the scarcity of palaeoscolecids in the Burgess Shale, which presumably represents an ecological phenomenon.
Scathascolex NMNH 83939b.1
Photographs and electron micrographs of Scathascolex minor gen. et sp. nov. (NMNH 83939b.1).
Zipped archive containing the following high-resolution images:
NMNH_83939b.1_0049.tiff
NMNH_83939b.1_0052_merge.g.tiff
NMNH_83939b.1_0053.tiff
NMNH_83939b.1_0054.tiff
NMNH_83939b.1_0055.tiff
NMNH_83939b.1_0056.tiff
NMNH_83939b_i_0047_merge_C.tiff
NMNH_83939_slab.jpg
x025 NMNH_83939b.1-ii-j.tif
x025 NMNH_83939b.1.tif
x025 NMNH_83939b.1_008.tif
x025 NMNH_83939b.1_008_scale.tif
x025 NMNH_83939b.1_009.tif
x025 NMNH_83939b.1_010.tif
x025 NMNH_83939b.1_011.tif
x025 NMNH_83939b.1_1.g.tif
x025 NMNH_83939b.1_1.g0.tif
x025 NMNH_83939b.1_1.tif
x025 NMNH_83939b.1_2.tif
x025 NMNH_83939b.1_3.tif
x025 NMNH_83939b.1_4.tif
x025 NMNH_83939b.1_5.tif
x025 NMNH_83939b.1_6.tif
x025 NMNH_83939b.1_7.tif
x025 NMNH_83939b.1_700.tif
x025 NMNH_83939b.1_701.tif
x025 NMNH_83939b.1_8.tif
x025 NMNH__83939b.1.tif
x025 NMNH__83939b.1_032.tif
x025 NMNH__83939b.1_032_qm.PNG
x037 NMNH_83939b.1_023_1.tif
x037 NMNH_83939b.1_030.tif
x037 NMNH_83939b.1_030_locate.PNG
x037 NMNH_83939b.1_031.tif
x037 NMNH_83939b.1_031_locate.PNG
x037 NMNH_83939b.1_033.tif
x037 NMNH_83939b.1_033_locate.PNG
x037 NMNH_83939b.1_034.tif
x037 NMNH_83939b.1_034_locate.PNG
x069 NMNH_83939b.1_035.tif
x069 NMNH_83939b.1_035_locate.PNG
x084 NMNH_83939b.1_011.tif
x084 NMNH_83939b.1_011_locate.PNG
x1000 NMNH_83939b.1_017.PNG
x1000 NMNH_83939b.1_017.tif
x1409 NMNH_83939b.1_021.PNG
x1409 NMNH_83939b.1_021.tif
x143 NMNH_83939b.1_001.tif
x143 NMNH_83939b.1_001_locate.PNG
x143 NMNH_83939b.1_002.tif
x143 NMNH_83939b.1_002_locate.PNG
x144 NMNH_83939b.1_000.tif
x144 NMNH_83939b.1_000_locate.PNG
x144 NMNH_83939b.1_008.tif
x144 NMNH_83939b.1_008_locate.PNG
x1444 NMNH_83939b.1_015.tif
x1444 NMNH_83939b.1_016.tif
x146 NMNH_83939b.1_702.tif
x147 NMNH_83939b.1_006.tif
x147 NMNH_83939b.1_006_locate.PNG
x148 NMNH_83939b.1_691.tif
x152 NMNH_83939b.1_026.tif
x154 NMNH_83939b.1_012.tif
x154 NMNH_83939b.1_012_locate.PNG
x1828 NMNH_83939b.1_018.PNG
x1828 NMNH_83939b.1_018.tif
x198 NMNH_83939b.1_022.tif
x198 NMNH_83939b.1_022_locate.PNG
x208 NMNH_83939b.1_028.tif
x208 NMNH_83939b.1_028_locate.PNG
x213 NMNH_83939b.1_692.tif
x237 NMNH_83939b.1_003.tif
x237 NMNH_83939b.1_003_locate.PNG
x268 NMNH_83939b.1_004.tif
x268 NMNH_83939b.1_004_locate.PNG
x301 NMNH_83939b.1_009.tif
x301 NMNH_83939b.1_009_locate.PNG
x316 NMNH_83939b.1_013.tif
x316 NMNH_83939b.1_013_locate.PNG
x329 NMNH_83939b.1_029.tif
x329 NMNH_83939b.1_029_locate.PNG
x344 NMNH_83939b.1_698.tif
x344 NMNH_83939b.1_699.tif
x355 NMNH_83939b.1_693.tif
x355 NMNH_83939b.1_694.tif
x355 NMNH_83939b.1_695.tif
x355 NMNH_83939b.1_696.tif
x355 NMNH_83939b.1_697.tif
x435 NMNH_83939b.1_019.tif
x435 NMNH_83939b.1_019_locate.PNG
x450 NMNH_83939b.1_007.tif
x473 NMNH_83939b.1_023.tif
x473 NMNH_83939b.1_023_locate.PNG
x549 NMNH_83939b.1_005.tif
x549 NMNH_83939b.1_014.PNG
x549 NMNH_83939b.1_014.tif
x620 NMNH_83939b.1_024.PNG
x620 NMNH_83939b.1_024.tif
x747 NMNH_83939b.1_020.PNG
x747 NMNH_83939b.1_020.tif
x750 NMNH_83939b.1_010.PNG
x750 NMNH_83939b.1_010.tif
x969 NMNH_83939b.1_027.PNG
x969 NMNH_83939b.1_027.tif
Low-resolution thumbnails of the included files are available in the associated README.pdf.
Scathascolex NMNH 83939b.2
Photographs and electron micrographs of Scathascolex minor gen. et sp. nov. (NMNH 83939b.2).
Zipped archive containing the following high-resolution images:
NMNH_83939b.2_0057.g0.tiff
NMNH_83939b.2_0057_C.tiff
NMNH_83939b.2_0058.tiff
NMNH_83939b.2_0059.tiff
NMNH_83939_slab.jpg
x023 NMNH_83939b.2_039.PNG
x023 NMNH_83939b.2_039.tif
x023 NMNH_83939b.2_042.PNG
x023 NMNH_83939b.2_042.tif
x023 NMNH_83939b.2_043_1.tif
x062 NMNH_83939b.2_043.tif
x107 NMNH_83939b.2_040.PNG
x107 NMNH_83939b.2_040.tif
x114 NMNH_83939b.2_044.tif
x140 NMNH_83939b.2_036.PNG
x140 NMNH_83939b.2_036.tif
x220 NMNH_83939b.2_045.PNG
x220 NMNH_83939b.2_045.tif
x253 NMNH_83939b.2_037.PNG
x253 NMNH_83939b.2_037.tif
x450 NMNH_83939b.2_041.tif
x514 NMNH_83939b.2_038.PNG
x514 NMNH_83939b.2_038.tif
Low-resolution thumbnails of the included files are available in the associated README.pdf.
Scathascolex NMNH 83939d
Photographs and electron micrographs of Scathascolex minor gen. et sp. nov. (NMNH 83939d).
Zipped archive containing the following high-resolution images:
NMNH_83939d_0060.g_merge.tiff
NMNH_83939d_0060_merge_C.tiff
NMNH_83939d_0064.tiff
NMNH_83939d_0065_G.tiff
NMNH_83939d_0066.tiff
NMNH_83939d_0067.tiff
x024 NMNH_83939d.tif
x069 NMNH_83939d_6.tif
x074 NMNH_83939d_5.tif
x097 NMNH_83939d_1.tif
x097 NMNH_83939d_2.tif
x251 NMNH_83939d_3.tif
x566 NMNH_83939d_4.tif
Low-resolution thumbnails of the included files are available in the associated README.pdf.
Scathascolex NMNH 196193
Photographs and electron micrographs of Scathascolex minor gen. et sp. nov. (NMNH 196193).
Zipped archive containing the following high-resolution images:
NMNH_196193_0400.tiff
NMNH_196193_0403.tiff
NMNH_196193_0404.tiff
NMNH_196193_0405.tiff
NMNH_196193_0407_merge.g.tiff
NMNH_196193_0407_merge_C.jpeg
x024 NMNH_196193_12.tif
x035 NMNH_196193.g.tif
x035 NMNH_196193_2.tif
x068 NMNH_196193_9.tif
x090 NMNH_196193.g.tif
x090 NMNH_196193_3.g.tif
x090 NMNH_196193_3.tif
x119 NMNH_196193_6.tif
x119 NMNH_196193_7.tif
x131 NMNH_196193_10.tif
x143 NMNH_196193_8.tif
x227 NMNH_196193_11.tif
x255 NMNH_196193_4.tif
x255 NMNH_196193_5.tif
x521 NMNH_196193.tif
x521 NMNH_196193_1.tif
Low-resolution thumbnails of the included files are available in the associated README.pdf.
Scathascolex NMNH 202689
Photographs and electron micrographs of Scathascolex minor gen. et sp. nov. (NMNH 202689).
Zipped archive containing the following high-resolution images:
NMNH_202689_0408.tiff
NMNH_202689_0410.tiff
NMNH_202689_0411.tiff
NMNH_202689_0413_merge.tiff
NMNH_202689_0414.tiff
NMNH_202689_0417.tiff
NMNH_202689_0523.tiff
NMNH_202689_0523_C.jpeg
NMNH_202689_0524.tiff
NMNH_202689_0525.tiff
NMNH_202689_0526.tiff
x027 NMNH_202689_5.tif
x027 NMNH_202689_6.tif
x037 NMNH_202689_7.tif
x048 NMNH_202689_8.tif
x054 NMNH_202689.tif
x054 NMNH_202689_1.tif
x067 NMNH_202689_2.tif
x105 NMNH_202689_9.tif
x109 NMNH_202689_3.tif
x483 NMNH_202689_4.tif
Low-resolution thumbnails of the included files are available in the associated README.pdf.
Scathascolex NMNH 203005
Photographs and electron micrographs of Scathascolex minor gen. et sp. nov. (NMNH 203005).
Zipped archive containing the following high-resolution images:
NMNH_203005_0498_scale.jpeg
NMNH_203005_0500.tiff
NMNH_203005_0502.tiff
NMNH_203005_0503.tiff
NMNH_203005_0504.tiff
x027 NMNH_203005.tif
x036 NMNH_203005_2.tif
x036 NMNH_203005_3.tif
x059 NMNH_203005_6.tif
x064 NMNH_203005_4.tif
x064 NMNH_203005_5.tif
x077 NMNH_203005_1.tif
x100 NMNH_203005_7.tif
Low-resolution thumbnails of the included files are available in the associated README.pdf.
Scathascolex NMNH 203006
Photographs and electron micrographs of Scathascolex minor gen. et sp. nov. (NMNH 203006).
Zipped archive containing the following high-resolution images:
NMNH_203006_0419_merge_C.jpeg
NMNH_203006_0505.tiff
NMNH_203006_0506.tiff
NMNH_203006_0507.tiff
NMNH_203006_0508.tiff
NMNH_203006_0509.tiff
NMNH_203006_0510.tiff
NMNH_203006_0511.tiff
NMNH_203006_0512.tiff
NMNH_203006_0513.tiff
NMNH_203006_0514.tiff
NMNH_203006_0515_g.tiff
NMNH_203006_0516_G.tiff
NMNH_203006_0517.tiff
NMNH_203006_0521.tiff
NMNH_203006_0522.tiff
x041 NMNH_203006_2.tif
x041 NMNH_203006_3.tif
x041 NMNH_203006_4.tif
x078 NMNH_203006.tif
x078 NMNH_203006_1.tif
Low-resolution thumbnails of the included files are available in the associated README.pdf.
Louisella ROM 63359
Photographs and electron micrographs of Louisella pedunculata (ROM 63359).
Zipped archive containing the following high-resolution images:
ROM 63359A_264.JPG
ROM 63359A_264_gex_265.JPG
ROM 63359A_265.JPG
ROM 63359A_269.JPG
ROM 63359A_269_g.JPG
ROM 63359A_269_gex_270.JPG
ROM 63359A_270.JPG
ROM 63359A_271.JPG
ROM 63359A_271_gex_274.JPG
ROM 63359A_274.JPG
ROM 63359A_275.JPG
ROM 63359A_277.JPG
ROM 63359A_277_gex_275.JPG
ROM 63359A_280.JPG
ROM 63359A_281.JPG
ROM 63359A_282.JPG
ROM 63359A_283.JPG
ROM 63359B_456.tif
ROM 63359B_459.tif
ROM 63359B_460.tif
ROM 63359B_463.tif
ROM 63359B_464.tif
ROM 63359B_465.tif
Low-resolution thumbnails of the included files are available in the associated README.pdf.