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Subphylum Chelicerata

Subphylum Chelicerata 5 Class Merostomata z Defining characteristics-Appendages on the abdomen are flattened and modified for gas exchange as "book gills"-Terminal portion of body drawn out into an elongated spike z Only 4 living species; the horseshoe crabs

Phylum Arthropoda: Subphyla Trilobita & Chelicerata and ...

Phylum Arthropoda: Subphyla Trilobita & Chelicerata and Phylum Onychophora & Respiratory Systems 10.1 Lab #10 -- Biological Sciences 102 - Animal Biology There are over a million named species of arthropods, which makes this huge and diverse phylum the largest in the animal kingdom consisting of ...

Phylum Arthropoda

1 Phylum Arthropoda - Lec. 4 Phylum Arthropoda today's lecture • Arthropod Characteristics - Nervous System • Subphylum Mandibulata - phylogeny • Class Crustacea - Species richness - subclasses Phylum Arthropoda Subphylum Trilobitomorpha √ Class Trilobita √ Subphylum Chelicerata √ Class Merostomata √ ...

Collecting and Preserving Insects

1 Collecting and Preserving Insects Phylum Arthropoda Segmented body Segmented appendages Chitinous exoskeleton Subphylum Chelicerata Class Arachnida spiders, ticks, mites, scorpions Subphylum Crustacea Class Malacostraca pillbugsand sowbugs Subphylum Uniramia Class Diplopoda millipedes Subphylum Uniramia Class ...

Crustacean parasites

Chapter 4 Crustacean parasites Of all the metazoan groups discussed in this book, the crustaceans are the most diverse and ubiquitous. Among them, the copepods are dominant.

XI. Subphylum Uniramia A. Characteristics

XI. Subphylum Uniramia A. Characteristics 1. One pair of antennae 2. Appendages single branched B. Class Insecta 1. Adult characteristics a. Three tagmata: head, thorax, & abdomen b.

38-1 Phylum Arthropoda 38-2 Subphylum Crustacea 38-3 Subphyla ...

S UBPHYLA C HELICERA TA AND U NIRAMIA U nlike crustaceans, nearly all members of the subphyla Chelicerata and Uniramia are terrestrial. The major group in Chelicerata is the class Arachnida (uh-RAK-nuh-duh) , which contains over 70,000 species.

Biology 355: Entomology

Part C. Diversity and form of Chelicerata Activity 4: Comparison of marine and terrestrial chelicerates 4a . Examination of Merostomata-Examine the horseshoe crab specimen closely.

Animal Diversity II*

With 3 pairs of legs, one pair of antennae, often with wings; sometimes without legs and/or antennae -----> Subphylum Uniramia , Class Insecta With 4 pairs of legs, no antennae; if 5 pairs of legs then first pair with pincers -----> Subphylum Chelicerata ...


Trilobites edited by David L. Alles Western Washington University e-mail: alles@biol.wwu.edu This web paper was last updated 5/25/09. Note: In PDF format most of the images in this web paper can be enlarged for greater detail.