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TABLE 1. Fossil material subjected to histological study.

Specimen Locality/Formation Taxon Skeletal element Length (mm) Circumference (mm) Thin-section Polished section
U. S., K2 1586 Vrabchov dol/Rezhantsi Formation ?Titanosauria diaphyseal fragment of undetermined long bone 79 ~ 207 U. S., K2 1586-1 U. S., K2 1586-2 U. S., K2 1586-3 yes
NMNHS FR-16 Vrabchov dol/Rezhantsi Formation ?Titanosauria undetermined bone fragment, possibly part of long bone diaphysis 77 148.68 NMNHS FR-16 yes
NMNHS F-31436 Kajlâka Formation Ornithomimosauria partial left humerus 94 180 NMNHS F-31436-a NMNHS F-31436-b no
NMNHS F-31442 Labirinta cave/Kajlâka Formation ?Hadrosauroidea partial diaphysis 98 158 NMNHS F-31442 no
NMNHS Mos19 Labirinta cave/Kajlâka Formation ?Hadrosauroidea assorted cortical fragments     NMNHS Mos19-1 NMNHS Mos19-2 NMNHS Mos19-3 NMNHS Mos19-4 NMNHS Mos19-5 NMNHS Mos19-6 no

 

 

TABLE 2. Full width at half maximum (FWHM ˚2θ) of 002 and 300 fluorapatite reflections; average crystallite size estimation (Å) along a - and c - crystallographic directions and corresponding aspect ratio (length/width).

Fluorapatite
Sample 002 300 Crystallite size along c-axis Crystallite size along a-axis Aspect ratio

(l/w)

NMNHS FR-16 0.3 0.46 542 276 1.9
U.S., K2 1586 0.28 0.42 626 309 2
NMNHS F-31442 0.27 0.46 686 274 2.5
NMNHS Mos19-2 0.26 0.56 687 209 3.3
NMNHS Mos19-3 0.24 0.54 871 221 3.9

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