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Homalodora ficus Schrammen, 1910Homalodora ficus is a relatively small, fig-shaped megamorine sponge. It has several 1.5 to 2 mm wide pores on its rounded top. The pores are surrounded by radiating grooves.
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Homalodora plana Schrammen 1910Homalodora plana occurs as planar bodies, commonly with a roughly triangular outline. This and the following specimen are typical examples of the kind, which is relatively common in the Lower Campanian.
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The untypical specimen of Homalodora plana shown here is sitting on a fragment of another sponge. It has several strong roots.
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Another example of Homalodora plana, showing the typical numerous postica on the narrow top surface. Here, the top surface is inclined towards the front side, perhaps an adaptation to local currents.
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Homalodora ramosa Mantell 1822Homalodora ramosa is a branching sponge, very similar to Brochodora, but smaller in its dimensions, i.e. the twigs do not exceed 15 mm in diameter. Homalodora ramosa is also distinguished by the occurrence of small, irregularly arranged pores on the twig surfaces, which are absent from Brochodora species. The ends of the twigs are truncated to rounded and display many millimeter-sized oscules.
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Homalodora tuberosa Schrammen 1910Homalodora tuberosa is a claviform sponge with several knob-shaped, oscule-bearing processes at its top end .
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A specimen of Homalodora tuberosa with more pronounced humps. Further development of the humps into branches leads to forms separeted as Brochodora roemeri.
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This specimen of Homalodora tuberosa shows more truncated tops, which give it a mushroom or table shape.
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A fig-shaped specimen of Homalodora tuberosa which could easily be confused with Homalodora ficus. However it has several (9) slight to distinct protrusions on which are groups of postica (see top left and right parts of specimen), with some faint radial furrows. Thus the canalization differs from that of Homalodora ficus.
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