-
marine and
shallow marine habitats. Some
xenacanths may have
grown to
lengths of 5 m (16 ft). Most
xenacanths died out at the end of the
Permian in the...
- Some
prehistoric sharks (in a
broad sense),
including hybodonts and
xenacanths, are also
thought to have
inhabited freshwater environments. A
small number...
-
stingray Hemitrygon bennettii Frilled shark Chlamydoselachus anguineus The †
xenacanth †Lebachacanthus senckenbergi**** The †symmoriiform †Stethacanthus productus...
- Holocephalans, and
potential members of the symmoriida. †Xenacanthiformes
Xenacanths Glikman, 1964 4 Eel-like
elasmobranchs that were some of the top freshwater...
- is a
genus of
extinct xenacanth known from the late Carboniferous-Early
Permian of Europe.
During the late Paleozoic,
xenacanths were the apex predators...
-
produced by some
extinct chondricthyan groups, such as
hybodonts and
xenacanths. Egg
cases are made of
collagen protein strands, and are
often described...
- just to name a few. The
rivers were
roamed by
Orthacanthus texensis (a
xenacanth "shark") and
Ectosteorhachis nitidus (a
megalichthyid fish).
Fossil bonebeds...
-
elasmobranchs sensu lato
include the
hybodonts (Order Hybodontiformes),
xenacanths (order Xenacanthformes) and Ctenacanthiformes.
These are also
often referred...
- 'foreign, alien' + ἄκανθος, akanthos, 'spine') is a
genus of
prehistoric xenacanths.
Fossils of
various species have been
found worldwide.
Xenacanthus had...
-
Barbclabornia is an
extinct genus of
xenacanth from the
Early Permian and
possibly upper Pennsylvanian of
North America. The
genus contains a
single described...
