Platyspondylia sp. (Fig. 2) MATERIAL EXAMINED. — 11 trunk (SPV 737) and four caudal (SPV 738 to SPV 741) vertebrae. DESCRIPTION All vertebrae are small (length of centrum <3 mm). Trunk vertebrae are mainly characterized by their markedly depressed neural arch and by the presence of an obtuse posterior median notch.Ŋe neural spine is developed, but not high, and it does not reach the zygosphene anteriorly. Ŋe interzygapophyseal constriction is well expressed. Ŋe centrum does not markedly widen anteriorly.Ŋe most significant features occur on caudal vertebrae. Aside from ventral structures, the overall morphology, and more specifically the neural spine and neural arch of caudal vertebrae are similar to those of the trunk ...
HEMITRYPUS, Cope. Represented by a vertebra of the general character of those of the genus Scaphe...
SCAPHERPETON, Cope. Genus novum Batrachiarum. Vertebrae deeply biconcave, with opposed, but not c...
Seapharpeton laticolle, sp. nov. Vertebrae of several individuals of smaller size than those refe...
Uronautes cetiformis, sp. nov. The cervical vertebra of this species is of unusual form, being sh...
Scapherpeton tectum, sp. nov. Represented by a vertebra which is one of the best preserved in the...
URONAUTES Cope. Genus novum Sauropterygiarum. Cervical vertebrae, like the dorsals and caudals, s...
Natrix sp. (Fig. 12 A-E) Natrix sp. – Ivanov & Musil 2004: 229. Natrix sp., type I – Ivanov e...
<p><b>A, B.</b> Posterior view. <b>C, D.</b> Ventral view, showing ovate depression on the ventral s...
CHAMPSOSAURUS, Cope. Genus novum. Vertebrae of more than a hundred individuals referable to sever...
Fig. 9. Examples of vertebrae of Hypuronector (scale bar 1 mm): A, three associated caudal vertebrae...
Elasmosaurid plesiosaurians are renowned for their immensely long necks, and indeed, possessed the h...
Elasmosaurid plesiosaurians are renowned for their immensely long necks, and indeed, possessed the h...
HEMITRYPUS, Cope. Represented by a vertebra of the general character of those of the genus Scaphe...
A plesiosaur specimen from the Lower Lias (Lower Jurassic) of England displays lesions of the verteb...
Elasmosaurid plesiosaurians are renowned for their immensely long necks, and indeed, possessed the h...
HEMITRYPUS, Cope. Represented by a vertebra of the general character of those of the genus Scaphe...
SCAPHERPETON, Cope. Genus novum Batrachiarum. Vertebrae deeply biconcave, with opposed, but not c...
Seapharpeton laticolle, sp. nov. Vertebrae of several individuals of smaller size than those refe...
Uronautes cetiformis, sp. nov. The cervical vertebra of this species is of unusual form, being sh...
Scapherpeton tectum, sp. nov. Represented by a vertebra which is one of the best preserved in the...
URONAUTES Cope. Genus novum Sauropterygiarum. Cervical vertebrae, like the dorsals and caudals, s...
Natrix sp. (Fig. 12 A-E) Natrix sp. – Ivanov & Musil 2004: 229. Natrix sp., type I – Ivanov e...
<p><b>A, B.</b> Posterior view. <b>C, D.</b> Ventral view, showing ovate depression on the ventral s...
CHAMPSOSAURUS, Cope. Genus novum. Vertebrae of more than a hundred individuals referable to sever...
Fig. 9. Examples of vertebrae of Hypuronector (scale bar 1 mm): A, three associated caudal vertebrae...
Elasmosaurid plesiosaurians are renowned for their immensely long necks, and indeed, possessed the h...
Elasmosaurid plesiosaurians are renowned for their immensely long necks, and indeed, possessed the h...
HEMITRYPUS, Cope. Represented by a vertebra of the general character of those of the genus Scaphe...
A plesiosaur specimen from the Lower Lias (Lower Jurassic) of England displays lesions of the verteb...
Elasmosaurid plesiosaurians are renowned for their immensely long necks, and indeed, possessed the h...
HEMITRYPUS, Cope. Represented by a vertebra of the general character of those of the genus Scaphe...
SCAPHERPETON, Cope. Genus novum Batrachiarum. Vertebrae deeply biconcave, with opposed, but not c...
Seapharpeton laticolle, sp. nov. Vertebrae of several individuals of smaller size than those refe...