Page:A Revision of the Families and Genera of the Stylonuracea (Eurypterida).djvu/31

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Stratigraphic range.—Lower Carboniferous; Upper Devonian (?).

The following species are recognized:

Hibbertopterus ? hibernicus (Baily), 1872 Devonian Ireland
Hibbertopterus ? minutisculptus (Peach), 1907 Lower Carboniferous Scotland
Hibbertopterus ? potens (Hall), 1884 Pennsylvanian Pennsylvania
Hibbertopterus ? salmi (Stur), 1877 Lower Carboniferous Czechoslovakia
Hibbertopterus scouleri (Hibbert), 1836 Lower Carboniferous Scotland
Hibbertopterus ? sewardi (Strand), 1926 Carboniferous South Africa
Hibbertopterus ? stevensoni (Etheridge, Jr.), 1876 Lower Carboniferous Scotland

Genus Campylocephalus Eichwald, 1860

Diagnosis.—Hibbertopteridae with subelliptical prosoma, narrow at base and broadest at midsection; compound eyes reniform, without annular cuticular thickening, located in posterior half of prosoma.

Type species.—Limulus oculatus Kutorga, 1838.

Distribution.—Urals, U.S.S.R.

Stratigraphic range.—Upper Carboniferous-Permian.

Recognized species for this genus:

Campylocephalus oculatus (Kutorga) Permian (?) U.S.S.R.


Baily, W. H.
1866–72 in Woodward, H. Monograph of the British Fossil Crustacea, etc., Paleontographical Soc., part 4, pp. 148–151; pl. 28, figs. 16, 17, 17a; text figs. 45–48.
Caster, K. E., and E. N. Kjellesvig-Waering
1923. Melbournopterus, A New Silurian Eurypterid from Australia. Jour. Pal., 27, no. 1, pp. 153–156, pl. 20, text-figs. 1–2.
Clarke, J. M.
1907. The Eurypterus shales of Shawangunk Mountains in eastern New York. N. Y. State Mus., Bull. 107, pp. 295–326, 10 pls.
Clarke, J. M., and R. Ruedemann
1912. The Eurypterida of New York. New York State Mus., Memoir 14, pp. 1–439, 88 pls., 121 figs.
Etheridge, R., Jr.
1877. On the Remains of a Large Crustacean, probably indicative of a New Species of Eurypterus, or allied Genus (Eurypterus? stevensonii), from the