Glass sponges Gang (hyalospongea) Also known as the six shot sponge Gang (hexactinellida), form large, bone composed entirely of siliceous spicules, sponge wire. Typical large spicules shoot mostly six-axis needle at right angles to each other, so called six shot sponge Gang. There are also radiance biaxial needles. Spicules are often connected to form a three-dimensional grid. Small spicules were six shooting star or two coils. Simple and complex groove type, flagella room large; Paleozoic species as well as some single-channel type. Late Proterozoic to modern. protospongia salter (original sponge) hydnoceras conrad (Horned sponge) astraeospongium roemer (Stars bone sponge) chancelloria walcott (Zhang cavity sponge)
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No. 2
玻璃海绵纲
Glass sponges Gang (Hyalospongea) Also known as the six shot sponge Gang (Hexactinellida), form large, bone composed entirely of siliceous spicules, sponge wire. Typical large spicules shoot mostly six-axis needle at right angles to each other, so called six shot sponge Gang. There are also radiance biaxial needles. Spicules are often connected to form a three-dimensional grid. Small spicules were six shooting star or two coils. Simple and complex groove type, flagella room large; Paleozoic species as well as some single-channel type. Late Proterozoic to modern. Protospongia Salter (original sponge) Hydnoceras Conrad (Horned sponge) Astraeospongium Roemer (Stars bone sponge) Chancelloria Walcott (Zhang cavity sponge)
