. Bulletin of the British Museum (Natural History), Geology. 202 m 52: 51; 50; /?9; =3 R. WATKINS RELATIVE ABUNDANCES 0^10%. Diversity 111111111111 i In11111ii1111 0 9 0 5 10 o 123 U 56789 10 Fig. 11 Faunal comparison of transported assemblages (dotted bars) and disturbed neighbourhood assemblages (solid bars) in the Protochonetes ludloviensis Association, Whitcliffe Beds, section 4A, Ledbury, based on mean count of 89 individuals per sample. 1 - various brachiopods; 2 - bivalves; 3 - gastropods; 4-Protochonetes ludloviensis; 6-bryozoa; 7 -'Camarotoechia'1 nucula; 8- Cornulites serpularius and
. Bulletin of the British Museum (Natural History), Geology. 202 m 52: 51; 50; /?9; =3 R. WATKINS RELATIVE ABUNDANCES 0^10%. Diversity 111111111111 i In11111ii1111 0 9 0 5 10 o 123 U 56789 10 Fig. 11 Faunal comparison of transported assemblages (dotted bars) and disturbed neighbourhood assemblages (solid bars) in the Protochonetes ludloviensis Association, Whitcliffe Beds, section 4A, Ledbury, based on mean count of 89 individuals per sample. 1 - various brachiopods; 2 - bivalves; 3 - gastropods; 4-Protochonetes ludloviensis; 6-bryozoa; 7 -'Camarotoechia'1 nucula; 8- Cornulites serpularius and Serpulites longissimus; 9 - Dayia navicula; 10 - rarefaction index for number of species at 50-individual sample size (solid circles = transported assemblages). grounds, as explained in the two previous sections. Based on this, the faunal characteristics of transported assemblages are empirically described and compared with the fauna of disturbed neighbourhood assemblages. This establishes some relative effects of shell transport among Ludlow shelf faunas of the study area. Comparisons between the two types of assemblage were made with a simple 2x2 contingency test (for example, number of bivalves versus number of brachiopods in transported assemblages and disturbed neighbourhood assemblages). Data and x2 values are given in Tables 6-12. Articulation of brachiopods Brachiopods with resorbtion in the tooth-socket structure show locally high rates of articulation in all sedimentary facies, with up to 60% of specimens occurring as whole shells in some samples. For brachiopods without resorbtion in the tooth-socket structure, a maximum of 20% articulated specimens occurs in the mudstone facies. Articulation of these types of brachiopods significantly decreases from the mudstone facies to the bioturbated siltstone facies and coquinoid siltstone. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration an
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