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Elasmosauridae

 

 
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Elasmosauridae
 
 
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Elasmosauridae was the family
Family (biology)

In biological classification, family is a taxonomic rank. Exact details of formal nomenclature depend on the Nomenclature Codes which applies....
 of plesiosaurs. They had the longest necks of the plesiosaurs and survived from the Early Jurassic
Early Jurassic

The Early Jurassic epoch is the earliest of three epochs of the Jurassic period. The Early Jurassic starts immediately after the Triassic-Jurassic extinction event and ends at the start of the Middle Jurassic ....
 to the end of the Cretaceous
Cretaceous

The Cretaceous , usually abbreviated K for its German translation Kreide, is a geologic period from circa to million years ago . In the geologic timescale, the Cretaceous follows on the Jurassic period and is followed by the Paleogene period....
. They had a diet of fish
Fish

A fish is any marine biology vertebrate animal that is typically ectothermic , covered with scale , and equipped with two sets of paired fins and several unpaired fins....
 and shelless cephalopods.








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Elasmosauridae was the family
Family (biology)

In biological classification, family is a taxonomic rank. Exact details of formal nomenclature depend on the Nomenclature Codes which applies....
 of plesiosaurs. They had the longest necks of the plesiosaurs and survived from the Early Jurassic
Early Jurassic

The Early Jurassic epoch is the earliest of three epochs of the Jurassic period. The Early Jurassic starts immediately after the Triassic-Jurassic extinction event and ends at the start of the Middle Jurassic ....
 to the end of the Cretaceous
Cretaceous

The Cretaceous , usually abbreviated K for its German translation Kreide, is a geologic period from circa to million years ago . In the geologic timescale, the Cretaceous follows on the Jurassic period and is followed by the Paleogene period....
. They had a diet of fish
Fish

A fish is any marine biology vertebrate animal that is typically ectothermic , covered with scale , and equipped with two sets of paired fins and several unpaired fins....
 and shelless cephalopods.

Size

The earliest elasmosaurids were small, about 3 m. At the end of the Cretaceous, elasmosaurids grew as large as 14 m., such as Elasmosaurus
Elasmosaurus

Elasmosaurus Greek language e?as???/elasmos = thin plate + sa????/sauros = lizard) is a genus of plesiosaur with an extremely long neck that lived in the Late Cretaceous....
. Their necks were the longest of all the plesiosaurs, with anywhere between 32 to 71 cervical vertebrae
Cervical vertebrae

In vertebrates, cervical vertebrae are those vertebrae immediately behind the skull....
  They weighed up to several tons.

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