Ichthyovenator

Ichthyovenator’s researchers have found out distinct attributes in the anatomy of the animal, The animal possess a sail in its back and also the tail which is sinusoidal in shape, The vertebral columns 410 percent of the height is given by the penultimate dorsal vertebra belonging to that of the spine. The front part contains an top most edge which is similar to that of the finger. It consists of the third and fourth sacrum a large, triangular bone at the base of the spine is in the shape of a fan. The top most view of the first tail vertebra is seen to sinusoidal in its shape. The side view shows that the first tail’s vertebra are in the shape of tunnels cut out deeply in the middle of prezygapophyses and the diapophyses.Compared to any other theropod the ilium known to be the uppermost and largest bone of the pelvis is more elongated than that of the pubic bone, there are even more many distinct features of the Tetanurae family. The last back vertebrae’s ribs joins along with the breast bones network. The pubic bone’s hind rim contains two slots known to be the foramen obturatum and fenestra which lowers down but does not close finally producing an indentation on the edge of a bone, The ischium known to form the lower and back part of the hip bone contains cavities in the sides, it contains a shaft which is flat in both their sides.


Ichthyovenator

The Ichthyovenator conatins sails known to be a large, flattish protrusion from the back of an animal which are two in number and kept separate from each other, this distinct feature is not found in any other spinosaurid. The axial column is found to be one meter in length contains spines which are higher in the penultimate, twelfth, back part of the vertebra in the shape of a crest which has a continuation from the posterior, slightly round sail which in turn continues from the sacral vertebrae in the hip part containing its peak in the top of third and fourth sacrals, The spine is very lengthy one summing up to 546 mm present in the twelfth dorsal vertebra which is wider in its apex forming a trapezoidal shape, on the contrary rest of the spinosaurids have a slight rectangular shape. Their anterior corner makes a process which is three centimeters in length protruding towards the apex.

Only few fragments of the thirteenth dorsal vertebra’s spine is found to be maintained, the top and the bottom edges are damaged. Its general structure made the researchers to think that this one is longer than that of the previous spine, this helps in proving that the posterior edge of the sails front part makes a corner which is of a rectangular shape since the spine of the first sacral vertebra is found to be 21 cm less which tends to form a gap. The second sacral vertebra’s spine seems to form slopes of curves protruding towards the top which combines along with a broad spines in the shape of a fan which is forty-eight cm in height from the third and fourth sacrals, the fifth sacral’s spine comes down slowly, the sacral spines does not come in contact with each other at all.

Ichthyovenator facts:
Name: Ichthyovenator (Fish hunter).
Named By:

Ronan Allain, Tiengkham Xeisanavong, Philippe Richir & Bounsou Khentavong - 2012.

Time period:

Aptian of the Cretaceous.

Fossil representation: Partial post cranial remains including 1 dorsal (back), 5 sacral (sacrum), two caudal (tail) vertebrae, both ilia and both ischia, the right pubis and a rib.