Concepedia

An unusually well preserved heteractinid sponge from the Pennsylvanian of Illinois and a possible classification and evolutionary scheme for the Heteractinida

Jane R. Rigby, Matthew H. Nitecki

Journal of Paleontology · 1975 · 34 citations · 9 references

Concepts

References

9

Treatise on Invertebrate Paleontology

Raymond C. Moore · The Micropaleontologist · 1950 · 3.6K citations

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The paleoecological history of two Pennsylvanian black shales

Rainer Zangerl, Eugene Stanley Richardson · 1963 · 149 citations

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Ontogeny and the explanation of form: an allometric analysis

Stephen Jay Gould · Journal of Paleontology · 1968 · 71 citations

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ON SOME NEW GENERA AND SPECIES OF PENNSYLVANIAN FOSSILS FROM THE WEWOKA FORMATION OF OKLAHOMA

George Herbert Girty · Annals of the New York Academy of Sciences · 1912 · 68 citations

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The Biology of the Porifera

E. Naylor, William G. Fry · Journal of Animal Ecology · 1971 · 53 citations

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