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Xenacanthida (or Xenacanthiformes) is an
order or
superorder of
extinct shark-like
chondrichthyans (cartilaginous fish)
known from the
Carboniferous to...
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Triodus is an
extinct genus of
xenacanthiform cartilaginous fish that
lived from the
Carboniferous to the Permian. In 2017, a new
species Triodus richterae...
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Reginaselache is an
extinct genus of
xenacanthiform known from the
Early Carboniferous (Mississippian age, mid-Viséan) of
central Queensland, Australia...
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Orthacanthus is an
extinct genus of fresh-water
xenacanthiform cartilaginous fish,
named by
Louis Ag****iz in 1843,
ranging from the
Upper Carboniferous...
- Gr****: ἄκανθα akantha, 'spine') is an
extinct genus of a
chondrichtyan xenacanthiform that
belongs to the
Sphenacanthidae family and
lived from the Late Devonian...
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Xenacanthus ragonhai Sp. nov
Valid Pauliv et al.
Permian (Wordian to Wuchiapingian) Rio do
Rasto Formation Brazil A
xenacanthiform, a
species of Xenacanthus....
- southwest.
Mooreodontus M.
moorei Arizona Blue Mesa Mesa
Redondo Common in the
lower Chinle Formation's
microvertebrate localities. A
xenacanthiform shark....
- 107–127.
Susan Turner;
Carole J.
Burrow (2011). "A
Lower Carboniferous xenacanthiform shark from Australia".
Journal of
Vertebrate Paleontology. 31 (2): 241–257...
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knowledge of the
evolution of
neurocranium in "ctenacanthiforms" and
xenacanthiforms, is
published by
Luccisano et al. (2022). A
study on the evolutionary...
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captorhinid Rothianiscus robustus.
Elsewhere in this
formation are
known the
Xenacanthiform Orthacanthus, the
Nectridea Diplocaulus, the
temnospondyle Dissorophidae...
