-
which are also the
oldest unambiguous remains of any
jawed vertebrates.
Shenacanthus vermiformis,
which lived 436
million years ago, had
thoracic armour plates...
-
Silurian (Aeronian)
described from
disarticulated dermoskeletal elements Shenacanthus is
jawed stem-chondrichthyan
genus from the
early Silurian (Telychian)...
- †Karksiodus †Leonodus †Plesioselachus †Polymerolepis †Protodus †Samarodus †
Shenacanthus? †Squatinactis †Antarctilamnidae
Antarctilamna Wellerodus? †Mcmurdodontidae...
- †Karksiodus †Leonodus †Plesioselachus †Polymerolepis †Protodus †Samarodus †
Shenacanthus? †Squatinactis †Antarctilamnidae
Antarctilamna Wellerodus? †Mcmurdodontidae...
- †Karksiodus †Leonodus †Plesioselachus †Polymerolepis †Protodus †Samarodus †
Shenacanthus? †Squatinactis †Antarctilamnidae
Antarctilamna Wellerodus? †Mcmurdodontidae...
- †Karksiodus †Leonodus †Plesioselachus †Polymerolepis †Protodus †Samarodus †
Shenacanthus? †Squatinactis †Antarctilamnidae
Antarctilamna Wellerodus? †Mcmurdodontidae...
- †Karksiodus †Leonodus †Plesioselachus †Polymerolepis †Protodus †Samarodus †
Shenacanthus? †Squatinactis †Antarctilamnidae
Antarctilamna Wellerodus? †Mcmurdodontidae...
- †Karksiodus †Leonodus †Plesioselachus †Polymerolepis †Protodus †Samarodus †
Shenacanthus? †Squatinactis †Antarctilamnidae
Antarctilamna Wellerodus? †Mcmurdodontidae...
- †Karksiodus †Leonodus †Plesioselachus †Polymerolepis †Protodus †Samarodus †
Shenacanthus? †Squatinactis †Antarctilamnidae
Antarctilamna Wellerodus? †Mcmurdodontidae...
- †Karksiodus †Leonodus †Plesioselachus †Polymerolepis †Protodus †Samarodus †
Shenacanthus? †Squatinactis †Antarctilamnidae
Antarctilamna Wellerodus? †Mcmurdodontidae...