Silurian (Ludlow) acastid trilobites from Gotland and Scania, Sweden

[1]  G. Edgecombe.  Silurian acastacean trilobites of the Americas , 1993, Journal of Paleontology.

[2]  P. Ax.  STEM SPECIES AND THE STEM LINEAGE CONCEPT , 1985, Cladistics : the international journal of the Willi Hennig Society.

[3]  L. Ramsköld.  Studies on Silurian trilobites from Gotland, Sweden , 1985 .

[4]  L. Ramsköld.  Silurian phacopid and dalmanitid trilobites from Gotland , 1985 .

[5]  Z. Smeenk.  Devonian trilobites of the southern Cantabrian Mountains (northern Spain) with a systematic description of the Asteropyginae , 1983 .

[6]  N. Eldredge.  Cladism and Common Sense , 1979 .

[7]  Kent Larsson.  Silurian tentaculitids from Gotland and Scania , 1979, Fossils and Strata.

[8]  V. G. Walmsley.  A review of silurian brachiopods from Gotland: M.G. Bassett and L.R.M. Cocks, 1974. Fossils and Strata, Universitetsforlaget, Oslo, 56 pp., 11 plates, U.S. $8.00 , 1975 .

[9]  Josef Gandl.  Die Acastavinae und Asteropyginae (Trilobita) Keltiberiens - (NE-Spanien) , 1972 .

[10]  J. Shergold.  A revision of Acastella spinosa (Salter 1864) with notes on related trilobites , 1967 .

[11]  J. Shergold.  A revision of Acaste downingiae Murchison and related trilobites , 1966 .

[12]  E. Clarkson.  The life attitude of the Silurian Trilobite Phacops musheni Salter 1864 , 1966, Scottish Journal of Geology.

[13]  F. Reed.  Some New Silurian Trilobites , 1925, Geological Magazine.

[14]  F. H. Mclearn.  Palaeontology of the Silurian rocks of Arisaig, Nova Scotia , 1924 .

[15]  K. A. Grönwall,et al.  Om Fyledalens Gotlandium , 1912 .

[16]  H. Munthe.  Stratigrafiska studier öfver Gotlands silurlager , 1902 .

[17]  K. A. Grönwall.  Öfversikt af Skånes yngre öfversiluriska bildningar , 1897 .

[18]  F. Eichstädt.  Anteckningar om de yngsta öfversiluriska aflagringarna i Skåne , 1888 .

[19]  R. Murchison.  The Silurian system : founded on geological researches in the counties of Salop, Hereford, Radnor, Montgomery, Caermarthen, Brecon, Pembroke, Monmouth, Gloucester, Worcester, and Stafford : with descriptions of the coal-fields and overlying formations , 1839 .