Green Sea Turtle By: Alicia Avelar


Green Sea Turtle

Description: Adults are 3 to 4 feet in carapace length. The green turtle is the largest of the Cheloniidae family. Adults way between 240 and 420 pounds.


  1. Kingdom: Reptiles
  2. Phylum: Chordata
  3. Family: Reptiles
  4. Order: Turtle
Green sea turtles are found around the world in warm subtropical and tropical ocean waters, and nesting occurs in over 80 different countries.

Green Sea Turtles first evolved 245 million years ago. Its belived that they might me apart of the late Triassis period based on fosil records. Its also belived that they were once land animals but over time evolved to spend most of their time in water.

Morphological and Molecular Evidence Closets

Closets Relatives:

  1. Loggerhead: Both have a little brown in them
  2. Hawksbill: 4 pairs of costal scutes

Evidence of evolution:

Fosils have been found that date back to the Triassic time period

Homologous Structures

Organisms with similar structures:

Human: We have the same arm bones as a green sea turtle but we use then for different things. We use them for picking up things, where a turtle uses them for moving its self and swimming.

Homologous Structures: When very different animals have bones that appear very similar in form or function and seem to be related.

Vestigial Structures:

  1. Green Sea Turtles have small deformed ribs, which in turn aren't needed because they have a huge shell protecting their inner body/organs.
  2. They also have a tail bone but it is not needed to swim.

Vestigial Structures: Structures that have no apparent function and appear to be residual parts from a past ancestor.

Transitional Fossils:

  1. Loggerhead: Slower than most turtles.
  2. Leatherback: Does not have a hard shell.

Transitional Fossils: Fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group.

Created By
Alicia Avelar

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