Great White Sharks Evidence Of Evolution

this is the great white shark

Introdution

The great white shark or scientificly known as carchadon carcharias is one of the seas most feice predators.

Discription

The great white shark is the largest predatory shark and is probably the most well-known and feared shark. The great white shark is gray or bluish above and white below. The largest great whites can reach lengths of 22 feet and weigh up to 5,000 pounds.

Classification

Classification: carchadon carcharias

Kingdom -animal

Phylum-chordate

Class-chondrichthyes

Order- lamniformes

Family-lamnidae

Genus- carchadon

Species- great white

habitat

The great white is found in temperate oceans, preferring a temperature ranging between 54 and 75 degrees F (12 and 24 degrees C). The shark lives off the coasts of North America, southern Africa, Australia (especially New South Wales and South Australia), New Zealand, Japan, Chile and parts of the Mediterranean.

Geologic Time (When did it first evolve?)

The first fish appeared around 510 million years ago. These were armored jawless fishes known as ostracoderms. And then came the sharks either 455 or 425 million years ago—there is some disagreement among paleontologists as to when.

Morphological and Molecular Evidence

tiger shark simularities: size,shark family, pattern, and habit is the same

this is a tiger shark

nurse shark simularities:size, is a shark, patern, as well as habitats

this is a nurse shark

ragged tooth shark simularities:size,and it’s a shark,simalar habit,pattern

this is a ragged tooth shark

Homologous Structures

humans vs great whites:cartilage for us it makes our ears and bridge of nose and joints

for sharks makes up their skeletons

mammals vs great whites:spine in mammals used for support of the back and spinal cord

in sharks used for movement but also for spinal cord

Vestigial Structures

ears:fins balance it and you can't hear under water so has very little use if any at all.

Transitional Fossils

maco shark:similar body type style but smaller still alive

this is a mako shark

megaladon:same only much bigger thought to be still alive

this a compairson in size
this is a megaldon vs a t-rex in size

Comparative Embryology

this is comparative embryology

Cites

All research and photos are thanks to google search

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