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The decapod (crustaceans such as a crab, lobster, shrimp or prawn) is made up of 20 body segments grouped into two main body parts: the cephalothorax and the pleon (abdomen). [1][2] Each segment may possess one pair of appendages, although in various groups these may be reduced or missing. They are, from head to tail:
Trilobites are extinct marine animals belonging to class Trilobita, a subdivision of the phylum Arthropoda, which includes the familiar insects, crabs, centipedes, millipedes, spiders, scorpions, and horseshoe crabs, among others.
1 Ιουλ 2024 · Crab anatomy - parts of a crab. The anatomy of a crab is split into main body parts which are the cephalothorax (head and chest) and abdomen. These house internal organs and external appendages.
In total, horseshoe crabs have 6 pairs of appendages on their cephalothorax. The first of these are the chelicerae , which give chelicerates their name. In horseshoe crabs, these look like tiny pincers in front of the mouth.
Appendages are segmented, providing each with a limited range of mobility. Crabs that have been colonized by epibionts have the potential to manipulate their limbs to groom ...
25 Φεβ 2017 · Sediment characteristics, especially grain size, are usually considered the most important variables affecting Uca distribution, mainly due to its close relationship with mouth appendage morphology. The aim of this study was to verify, from an assemblage perspective, if sediment is the most important variable affecting Uca species distribution ...
22 Δεκ 2023 · Crustaceans use their biramous appendages for a variety of purposes, including locomotion, feeding, and sensing the environment. The appendages are also used in communication, both within the species and with other animals.
