1. Creating Inner Mouth

Step 1

Start Maya and open the file which was saved in the last part of the tutorial.

Step 2

Select the inner border edges of the mouth as shown in the following image.

Step 3

With the inner mouth border edges selected, apply Extrude command to extrude the edges towards X axis as shown in the following image.

Step 4

Scale the extruded edges also as shown in the following image.

Step 5

Adjust the border edges as shown in the following image.

Step 6

Jump in the face selection mode and select the indicated inner faces as shown in the following image.

Step 7

With the faces selected, apply Extrude command and push it in Z axis as shown in the following image.

Step 8

Select and delete the unwanted faces as shown in the following image.

Step 9

To create the throat gap, select the four indicated faces as shown in the following image. 

Step 10

With the faces selected, extrude twice inside the mouth as shown in the following image.

Step 11

With the help of Insert Edge Loop tool, insert an edge loop as shown in the following image.

Step 12

Select the indicated faces for both upper and lower jaws as shown in the following image.

Step 13

With the gum faces selected, go to Edit Mesh > Duplicate command to make another  duplicate faces group. 

Step 14

Hide the indicated meshes to avoid the unwanted face selection problem.

Step 15

Extrude the lower mesh for gums as shown in the following image.

Step 16

Insert an indicated edge loop around the gum mesh as shown in the following image.

Step 17

In this way, the upper and lower gums are ready.

Step 18

With the help of Duplicate Special option, create the mirrored instance of the mesh for the other side. 

Step 19

To create the tongue, insert an edge as shown in the following image.

Step 20

With the help of Multi-Cut tool, create a segment as shown in the following image.

Step 21

Select the faces for the tongue as shown in the following image.

Step 22

Extrude the faces once as shown in the following image. You can isolate the half part of the mesh for better viewing experience of the selection process.

Step 23

Select and delete the side faces of the extruded part as shown in the following image.  

Step 24

Edit the shape as tongue. Select and extrude the two faces towards Z axis out of the mouth of the dinosaur. 

Step 25

Keep extruding the faces out of the mouth and form the shape of the tongue by scaling the tip of the tongue down. 

Step 26

Select and delete the border faces as shown in the following image.

Step 27

Unhide the hidden part of the mesh and keep the border edges close to each other.  

Step 28

Jump in the vertex selection mode and edit the shape of the tongue. Press 3 key on the keyboard to check the mesh in smooth preview mode.

Step 29

Keep the tongue down as shown in the following image. 

2. Creating Teeth

Step 1

As you can see, upper and lower gums are completed and teeth will be fixed here. 

Step 2

Create a cone in the perspective view port.

Step 3

With the cone selected, set the values of Radius as 0.2, Height as 2, Subdivisions Axis as 12 and Subdivisions Height as 4.

Step 4

Select and delete the cap faces of the cone.

Step 5

With the D key pressed, drag the Y Axis arrow down to the bottom of the cone as shown in the following image.

Step 6

Place the cone shape over the lower gum as shown in the following image.

Step 7

Jump in the vertex selection mode and edit the shape of the teeth as shown in the following image.

Step 8

Make several duplicate teeth with various scaling and place them over the gum as shown in the following image.

Step 9

With all lower left gum teeth selected, press Ctrl-G key on the keyboard to create a group of it.

Step 10

With the teeth group selected, open Duplicate Special Options window. 

Turn on Copy radio button with the value in the Scale X axis as -1.0  and then click on Duplicate Special button.

Step 11

This creates the duplicate teeth group for the other side's gum as shown in the following image.

Step 12

Following the same way, create the teeth groups for both upper left and right gums as shown in the following image.

Step 13

For adding details to the eye socket, insert two more edge loops around the eye socket as shown in the following image.

Step 14

Edit the vertices of the eye socket as per the reference image.

Step 15

With the eye's border edges selected, apply Extrude command to extrude the edges inside the socket as shown in the following image.

Step 16

Jump in the side view port and create a poly sphere primitive to create the eye ball.

Step 17

Place the eye ball inside the eye socket.

Step 18

Edit the vertices of the eye socket to cover the eye ball completely.

Step 19

You can see the final basic shape of the dinosaur both in the wired and smooth preview mode. 

Conclusion

In the next part of this tutorial series, I'll show you how to add details to the base mesh of the dinosaur character to increase mesh topology for smooth modelling.