used to diagnose these are not always visible.

Classification

*Ichthyosaurus communis (Beche and Conybeare, 1822)
*Ichthyosaurus breviceps (Owen, 1881)
*Ichthyosaurus conybeari (Lydekker, 1888)
*Ichthyosaurus anningae (Lomax and Massare, 2015)
*Ichthyosaurus larkini (Lomax and Massare, 2017)
*Ichthyosaurus somersetensis

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