plesiosauroidadj.n.

1860 R. Owen Palæontol. 229 The slight indication of the sacral vertebræ; the non-confluence of the caudal hæmapophyses with each other, are all ‘plesiosauroid’.

1896 Philos. Trans. 1895 (Royal Soc.) B. 186 99 The intervertebral articulations on the centrums are concave, with a somewhat plesiosauroid concavity.

1985 D. Norman Illustr. Encycl. Dinosaurs 179/1 The long-necked or ‘plesiosauroid’ plesiosaurs, such as Elasmosaurus..and Plesiosaurus.

1999 J. D. Andriano Immortal Monster vi. 123 In the last shot the viewer (not any of the characters) sees the lake-monster, unmistakably plesiosauroid, in the misty mere.

1870 Amer. Naturalist 4 127 In the American genus Polycotylus, though the type of limb is that of the Plesiosauroid, the ulna and radius are those of Ichthyosaurus.

1892 Proc. Royal Soc. 52 247 On the shoulder girdle in certain Plesiosauroids.

1988 Paleobiology 14 189/2 The two lineages of plesiosaurs, the plesiosaurids (Superfamily Plesiosauroidea) and the pliosauroids (Superfamily Pliosauroidea), shared a similar mode of locomotion, that of subaqueous flying, using their two pairs of wing-like appendages as hydrofoils.

2000 Advertiser (Adelaide) (Nexis) 27 June 42 The giant marine reptiles of the Mesozoic era belonged to one of two groups—the plesiosauroids or the pliosauroids.