10 Facts about Chordates

Monday, April 17th 2017. | Animals


Facts about Chordates tell the readers about the animals included in phylum Chordata. The physical characteristics of Chordates are noticed on the presence of a post-anal tail, pharyngeal slits a notochord, an endostyle and a hollow dorsal nerve cord. The anus of chordates will be formed before the mouth. Therefore, it is included as deuterostomes. Check other impressive facts about chordates by reading the following post below:

Facts about Chordates 1: notochord

During the development, a vertebral column will be replaced by a notochord in vertebrate chordates.

Facts about Chordates 2: phylum Chordata

The members of phylum Chordata include amphibians, mammals, birds, reptiles, and fish. All of them are included in subphyla Vertebrata. Lancelets are included in cephalochordata, while sea squirts are included in Tunicata.

Chordates Facts

Chordates Facts

Facts about Chordates 3: the living species

The number of living species of chordates includes more than 65,000. Osteichthyes accounts almost half of the living species. They are the bony fish.

Facts about Chordates 4: the fastest and largest animals in the world

Do you know that peregrine falcon is the fastest animal in the world, while blue whale is the largest animal in the world? Both of them are included as chordates.

Chordates Pictures

Chordates Pictures

Facts about Chordates 5: the fossil of chordates

The fossil of chordates was traced back during the Cambrian explosion.

Facts about Chordates 6: Hemichordata

The fourth chordate subphylum is represented by the Hemichordata. The member includes the acorn worms. In the modern day, it is excluded in the subphylum.

Facts about Chordates

Facts about Chordates

Facts about Chordates 7: Ambulacraria

Ambulacraria is considered as the sister taxon of Chordates. Hemichordata is included as a part of Ambulacraria along with Echinodermata.  The latter one includes crinoids, sea cucumbers, sea urchins and starfish. Get facts about eastern box turtles here.

Facts about Chordates 8: the name

William Bateson coined the name chordata in 1885. However, the term was already used in 1880. There will be stages of life found in chordate.  The spinal cord of chordata features a dorsal neural tube. The trunk of nervous system communicates due to the presence of this tube.

Chordates

Chordates

Facts about Chordates 9: the post-anal tail

The post-anal tail is located behind the anus. It extends backward. Get facts about echidnas here.

Facts about Chordates 10: notochord

Notochord is developed in the spine in most sub-groups of chordates. It can be found inside the body. Other important features of chordates include an endostyle and pharyngeal slits. The former one is employed to collect food particles in filter-feeding species.

Chordates Pic

Chordates Pic

Are you interested reading facts about chordates?

 

 


tags: ,