| 11. | Crinoids are supported by jointed stalks containing substantial compound ossicles.
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| 12. | The arms contain columns of well-developed vertebrae-like ossicles.
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| 13. | The middle-ear ossicles further amplify the vibration pressure roughly 20 times.
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| 14. | The three ossicles transmit sound from the outer ear to the inner ear.
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| 15. | Several ribs were also found with these ossicles attached.
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| 16. | Just below their skin is an endoskeleton composed of calcareous plates or ossicles.
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| 17. | There are no ossicles present over the neural spines, unlike in hupehsuchians.
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| 18. | The stapes is the third bone of the three ossicles in the middle ear.
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| 19. | Vibrations that contact the tympanic membrane travel through the three ossicles and into the inner ear.
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| 20. | Anterior to the ossicles lie further muscles, contraction of which cause the introvert to retract.
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