Crinoids 4.5 / 5 based on 3 ratings ? GeologyFossilsA2/A-levelOCR Created by: ellenioannouCreated on: 03-03-15 09:23 82103519467 Across 1. cup made of flat calcareous plates which contain soft body of animal-five fold symmetry (5) 4. soft tissue covering animal to protect calcite-flexible. Decays on death and so animal becomes disarticulated (8) 5. Crinoidae (5) 6. pinnules of brachial catch food particles which get passed down food grooves by cilia into the mouth (2, 3) 7. moderate energy (filter feeders). Above and below photic zone (11) 8. Calcite plates (4, 4, 2) Down 2. structures arranged in multiples of five (4, 4, 8) 3. delicate structures that waft in currents and use cilia to collect food particles. Flexible arms. (7) 9. made of calcite ossicles with centres linked together with soft tissue (4) 10. attaches to substrate - if on hard substrate they secrete cement to attach at base of stem (4, 4)
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