安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- Sea urchin - Wikipedia
Sea urchins or urchins ( ˈɜːrtʃɪnz ) are the class Echinoidea within the echinoderms
- Echinoidea | INFORMATION | Animal Diversity Web - ADW
There are approximately 940 species of echinoids distributed worldwide in marine habitats from the intertidal to 5000 meters deep Their fossil record is extensive due to their test (an internal skeleton), and dates back to the middle Ordovician period
- Echinoidea - Digital Atlas of Ancient Life
Echinoidea comes from the Greek word ‘echinos’ meaning “spiny” and includes the sea urchins, sand dollars, and heart urchins Echinoids are the sister taxa to holothuroidians within the Echinozoa clade
- World Echinoidea Database - World Register of Marine Species
Echinoids, or sea urchins (oursins [French], Seeigel [German], erizos de mar [Spanish]) constitute a group of exclusively marine invertebrates inhabiting the intertidal down to the deep-sea trenches They are characterized by a globose or flattened skeleton known as a test
- The Echinoidea - University of California Museum of Paleontology
Regular echinoids include the Cidaroida (pencil urchins) and Echinoida (sea urchins, including the long-spined sea urchin shown above left)
- What Are Echinoidea? Features, Life, Marine Role
What Are Echinoidea? Echinoidea is a class within the phylum Echinodermata, encompassing familiar marine invertebrates such as sea urchins, sand dollars, and sea biscuits These animals are characterized by their radial symmetry, often exhibiting a five-part body plan, and a hard, spiny body
- Echinoidea - an overview | ScienceDirect Topics
Echinoidea is defined as a class within the phylum Echinodermata that includes marine animals such as sea urchins and sand dollars, characterized by their distinctive pentaradial symmetry and an endoskeleton made of calcium carbonate
- What is a unique feature of Echinoidea? - The Institute for . . .
The most distinctive and unique feature of Echinoidea, also known as sea urchins and sand dollars, is their specialized feeding apparatus: the Aristotle’s Lantern, a complex, five-toothed chewing structure
|
|
|