The subclass Thelodonti includes five orders, Loganelliiormes Turner, 1991, Shieliiormes Marss, Wilson & Thorsteinsson, 2002, Phlebolepidiformes Berg, 1937, Thelodontiformes Kiaer, 1932, and Furcacaudiformes Wilson & Caldwell, 1998.
The family Longodidae certainly belongs to the subclass Thelodonti as its squamation is built of separate dermal scales with a crown, neck, and base.
Studies on Palaeozoic Thelodonti
Class AGNATHA Cope, 1889 Subclass THELODONTI Kiaer, 1932 INCERTI ORDINIS Family OESELIIDAE nov.
Thelodonti with scale crown carrying irregular polygonal pattern of ultrasculpture.
With these revised interpretations, it will be possible for new reconstructions and artistic representations of Phlebolepis elegans to be based on more reliable information, so that it can continue to be used as a prime example of both Silurian vertebrates and members of the Thelodonti
Studies of Palaeozoic Thelodonti
Articulated squamations as well as many isolated scales derived from acetic-acid residues of rock samples, allow establishment of 39 species (25 of which are new) of Thelodonti
, distributed in 25 genera (10 new) and 16 families (6 new), along with 5 orders (1 new), as well as two new species that are provisionally classified as chondrichthyans.
8 m contains an assemblage of the thelodonts Thelodonti
She also supposed that the different ultrasculpture types within Thelodonti
may indicate the polyphyletic nature of this subclass.
Our understanding of the Palaeozoic vertebrate subclass Thelodonti
has improved greatly in recent years as a result of new discoveries (e.
, Heterostraci and Arthrodina from the Chortkov Stage of Podolia.