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Primaspis crosotus

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Journal Article
Journal: PALAIOS
Published: 01 October 2016
PALAIOS (2016) 31 (10): 453–462.
.... Articulated exoskeletons of small, spinose primaspid trilobites [ Primaspis crosotus ( Locke )] occur mostly with their ventral surfaces applied directly to the textured surfaces (i.e., dorsal side down). On some lobes the reticulate texturing wraps around from the basal to the upper surface and is covered...
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A ) Isolated pod showing corrugations oriented transverse to long axis, fou...
in > PALAIOS
Published: 01 October 2016
cm. G ) Polished, etched section parallel to long axis of pod in F. H ) Polished, etched section transverse to long axis of another isolated pod. I ) Odontopleurid trilobites ( Primaspis crosotus ) on basal surface. J ) P. crosotus on basal surface of bryozoan ( Mesotrypa ?) Kope Formation
Journal Article
Published: 09 August 2011
Geological Magazine (2012) 149 (3): 397–411.
... University Press 2011 2011 Cambridge University Press Odontopleuridae Builth–Llandrindod Inlier Primaspis spinosity Meadowtownella Figure 2 Stratigraphy of the area, adapted from Davies et al . ( 1997 ), updated in line with more recent work (Fortey et al . 2000 ; Finney, 2005...