Stromatoporata (Stromatoporoids)

Stromatoporoidea is a class of aquatic invertebrates common in the fossil record from the Ordovician through the Cretaceous. They were especially abundant in the Silurian and Devonian. These invertebrates were important reef-formers throughout the Paleozoic and the Late Mesozoic. The group was previously thought to be related to the corals and placed in the Phylum Cnidaria. They are now classified in the sponges (Phylum Porifera), specifically the sclerosponges. There are numerous fossil forms with spherical, branching or encrusting skeletons of laminated calcite with vertical pillars between the laminae.

Stromatoporoids are useful markers whose form and occurrence can diagnose the depositional environment of sedimentary strata.

Source: Wikipedia: http://en.wikipedia.org/wiki/Stromatoporoidea

Shapes of the stromatoporoid colonies

A section through the stromatoporoid colony

Stromatopora goldfussi		VZ31
Stromatopora		JH243
Stromatopora		YA95
Stromatopora		p2299
Stromatopora		p4690
Stromatoporella cooperi		VZ27
Stromatoporella eifeliensis	Zukalová (1958), Pl. II, fig. 2 A29; výbrusy 1443-1444	VZ8
Stromatoporella frasniensis		VZ25
Stromatoporella frasniensis	Zukalová (1958), Pl. VI, fig. 1, 2	VZ22
Stromatoporella frasniensis		VZ24
Stromatoporella frasniensis		VZ23
Stromatoporella		VZ26
Stromatoporoidea Stearn, 1972		FF247
Stromatoporoidea Stearn, 1972		FF213
Stromatoporoidea Stearn, 1972		FF214
Stromatoporoidea Stearn, 1972		FF217
Stromatoporoidea Stearn, 1972		FF240
Stromatoporoidea Stearn, 1972		JK5219
Stromatoporoidea Stearn, 1972		FF249
Stromatoporoidea Stearn, 1972		FF210

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Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]