Chelicerata - Encyclopedia.com
2018年6月27日 · Chelicerata A phylum of invertebrate animals that includes arthropods belonging to the classes Arachnida (spiders and scorpions), Merostomata (horseshoe crabs), and …
Sea Spiders - Encyclopedia.com
2018年5月18日 · Pycnogonida (Pantopoda; sea spiders; phylum Arthropoda, subphylum Chelicerata) A class of marine chelicerates, all of which are small (total body length usually …
Merostomata (Horseshoe Crabs) - Encyclopedia.com
Class Chelicerata. Subclass Merostomata. Number of families 1. Thumbnail description Marine creatures distinguished by a large, hard exoskeleton that includes an arched, horseshoe …
Telson - Encyclopedia.com
2018年5月8日 · telson The spike-like, terminal segment of the opisthosoma that occurs in certain chelicerates (Chelicerata), e.g. limulids and eurypterids. The prominent, backward-pointing …
Arachnida (Spiders, Scorpions, Mites, and Ticks)
Arachnida(Spiders, scorpions, mites, and ticks) Phylum ArthropidaClass ChelicerataSubclass ArachnidaNumber of families 648Thumbnail description Highly recognizable and populous …
Pseudoscorpions - Encyclopedia.com
2018年5月29日 · Pseudoscorpiones (pseudoscorpions; subphylum Chelicerata, class Arachnida) Order of minute arachnids whose name refers to their large, scorpion-like, chelate pedipalps …
Arachnids - Encyclopedia.com
2018年6月8日 · Arachnids are members of the subphylum Chelicerata, which also includes the phylogenetically-related (related by evolution) ancient horseshoe crabs. Like other arthropods, …
Arthropoda - Encyclopedia.com
2018年5月23日 · Arthropods are divided into four subphyla. These are the Chelicerata, the Crustacea, the Uniramia, and the Trilobita. The last consists exclusively of extinct forms. …
Cephalothorax - Encyclopedia.com
2018年5月29日 · It is found in members of the Chelicerata (classes Merostomata, Arachnida, and Pycnogonida), and in most Crustacea. In spiders, it is the prosoma, which is covered by a …
Pycnogonida (Sea Spiders) - Encyclopedia.com
Part P, Arthropoda 2: Chelicerata, edited by R. C. Moore. Lawrence, KS: Geological Society of America and University of Kansas Press, 1960. Periodicals. Arnaud, Francoise, and Margo L. …