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24 Cards in this Set
- Front
- Back
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Phylum Porifera (Sponges)
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Class Demospongea (C-Rec)
Class Hexactinellida (C-Rec) Class Calcispongea (C-Rec) |
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Phylum Coelenterata (Jellyfish and Polyps)
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Class Hydrozoa (C-Rec)
Class Seyphozoa (C-Rec) Class Anthozoa Order Rugosa (Ord-Per) Order Tabulata (Ord-Per) Order Seleractinia (Tri-Rec) |
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Phylum Annelida
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Segmented Worms
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Phylum Bryozoa
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Class Stenolaemata (Ord-Rec)
Class Gymnolaemata (Tri-Rec) |
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Phylum Brachiopoda (some seashells)
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Class Inarticulata (C-Rec)
Class Articulata (C-Rec) Order Strophomenida (Ord-Jur) Order Spiriferida (Ord-Jur) |
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Porifera Components
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central cavity - paragaster
lined with - choanocytes top - osculum |
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Class Demospongea (C-Rec) (Porifera)
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silica or spongin spicules. Spicules have either one ray (monaxon) or four rays (tetraxon)
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Class Hexactinellida (C-Rec) (Porifera)
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the spicules composed of silica. six rays (hexaxon)
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Class Calcispongea (C-Rec) (Porifera)
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spicules of this group are calcareous, but of any form
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Phylum Cnidaria (Colenterata) Components
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cavity of the sac - coelenteron
tentacles - nematocysts body wall - curtain-like mesenteries aid in food digestion and absorption |
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Class Scyphozoans (Phylum Cnidaria)
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jellyfish
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Class Anthozoa (Phylum Cnidaria)
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Corals. Septa secreted between corals.
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Order Rugosa (Ord-Per)
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isolated tubes to honeycomb tubes. they appear to be like horns solitarily
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Order Tabulata (Ord-Per)
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Favosites (honeycomb coral), Halysites (chain corals), Syringopora (organ pipe coral), Aulopora (trumpet corals)
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Bryozoa Components
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lack of septa, small size of living chambers. zooids make up bryozoa. live in zooecia. the opening to the zooecias are apertures. they feed by use of lophophores.
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Order Trepostomata (Bryozoa)
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Massive, irregular, or thick-branched colonies
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Order Cryptostomata
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delicate twig-like or fan-like colonies. some have fenestrae, some have spiraling central axis
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Order Cheilostomata
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They look like barnacles
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Brachiopoda Components
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lophophores, diductor and adductor muscles open and close, they use pedicle to move. the pedicle foramen is the hole that is opened and closed with the pedicle valve
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Class Inarticulata
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chitinophosphatic or sometimes calcareous. faint growth lines, but ornamentation on shell rare
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Class Articulata
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fold and sulcus, relative size and shape of hingeline is diagnostic.
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Order Strophomenida (Ord-Jur)
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No pedicle. Concavo-convex to plano-convex shell.
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Order Rhynchonellida
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very biconvex shell, short hingeline, strong fold and sulcus. may have pronounced 'beak'. highly corrugated!! zig-zag appearence at the open end of the valve.
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Order Spiriferida (Ord-Jur)
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Spirifers have a long hingeline, giving them a wing-like appearance. "Butterfly shells"
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