Belemnite Morphology 0.0 / 5 ? GeologyBelemnitesA2/A-levelOCR Created by: HannahCavielCreated on: 08-03-17 10:11 bullet shaped component that counterbalanced the head guard 1 of 12 chambered part in the guard filled with air used for buoyancy phragmocone 2 of 12 tube linking the chambers. controls the amount of air in the phragmocone siphuncle 3 of 12 first chamber protoconch 4 of 12 flattened extension of the guard proostracum 5 of 12 mode of life nektonic 6 of 12 what are belemnites good indicators of? paleocurrent 7 of 12 what are belemnites often found in? death assemblages 8 of 12 how was horizontal movement controlled? jet propulsion 9 of 12 belemnite phylum mollusca 10 of 12 belemnite class cephlapoda 11 of 12 when were they abundant? cretaceous 12 of 12
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