- It is
debated whether the
extinct families Orthacodontidae and
Paraorthacodontidae belong to the
Hexanchiformes or the
extinct Synechodontiformes. However...
-
Paraorthacodus is an
extinct genus of shark. It a
member of the
family Paraorthacodontidae (though it was
formerly regarded as a
member of the
family Palaeospinacidae)...
-
placed in the order, Palaeospinacidae. The
families Orthacodontidae,
Paraorthacodontidae and Pseudonotidanidae,
often considered members of the group, have...
-
Paraorthacodus is an
extinct genus of shark. It a
member of the
family Paraorthacodontidae,
though it was
formerly regarded as a
member of the
family Palaeospinacidae...
- 13-XI-29-8, MLP 13XI-29-18, MLP 13-XI-29-31, and MLP 13-XI-29-32. A
Paraorthacodontidae Shark Propristiophorus aff. P. sp.
Seymour Island Three fragmentary...
-
closely related to Paraorthacodus, and
placed in the same
family Paraorthacodontidae, (though both
genera were
formerly placed in Palaeospinacidae) The...
