File:Herpetogaster collinsi.png

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English: Herpetogaster collinsi from the Middle Cambrian Burgess Shale

A–C, Royal Ontario Museum (ROM) 58051 Holotype.

A, Part, overall view;
B, Counterpart, detail of tentacles with hydrostatic canal and/or vascular system emphasized by white arrows;
C, Camera-lucida drawing of part and counterpart emphasizing the presence of putative segment boundaries and triangular projections along the stomach.
D, ROM 58046 Part, with symmetrical tentacles and pharyngeal pores.
E, ROM 58039 Counterpart, intestine with putative enclosing tube emphasized by small arrows.
F, G, ROM 58037 Part. F, Part, lateral view; G, Detail of terminal disc. H, I, ROM 58047 Part. H, extended stolon and terminal disc; I, Detail of the stolon, small arrows point to a darker central area representing a possible coelomic cavity.
Scale bars: A–F, H, 5 mm; G,I, 1 mm. an, anus; hy?, putative hydrostatic canal and/or vascular system; in, intestine; p?, putative pharyngeal pores; ph, pharynx; seg, segment boundary?; st, stolon; stom, stomach; td, terminal disc; te, tentacle.
Español: Herpetogaster collinsi, del cámbirico medio en el Esquisto de Burguess
Date
Source PLoS One
Author Jean-Bernard Caron, Simon Conway Morris, Degan Shu

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current20:19, 6 March 2010Thumbnail for version as of 20:19, 6 March 20102,084 × 1,875 (8.01 MB)Gustavocarra (talk | contribs){{Information |Description={{en|1='''''Herpetogaster collinsi''''' from the Middle Cambrian Burgess Shale<br/> A–C, Royal Ontario Museum (ROM) 58051 Holotype. A, Part, overall view; B, Counterpart, detail of tentacles with hydrostatic canal and/or vasc

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