H. Schroder (or Schroeder) was a German geologist and palaeontologist. During the eighteen-eighties he published papers (in German journals) on the Silurian fossil cephalopods of northern Europe (1882) and of Prussia (now part of northern Germany; 18822-1883), the Upper Cretaceous reptiles of the Baltic states (1885), and several more on the fossils of eastern Prussia (1886-1889). From 1896 to 1900 or later he appears to have been associated with the Geological Survey of Prussia, as he made some contributions to geological maps of the region and reported on geological boreholes. In 1904 he described a new species of fossil reptile from the sub-class Synapsida, Datheosaurus macrourus (now Haptodus macrourus) in the Jahrbuch der Koeniglich Preussischen Geologischen Landesanstalt zu Berlin. Four years later he described the marine fossils found by Paul T. Range* in the so-called Eurydesma beds of the Dwyka Formation in German South West Africa (now Namibia), in his paper "Marine Fossilien in Verbindung mit permischem Glazialkonglomerat in Deutsch-Suedwestafrika" (Ibid, 1908). This paper was the first in which fossils from Namibia were scientifically described (Hugo et al, 1983, p. 10). Schroeder visited South Africa sometime after 1923 for scientific purposes (Boonstra, 1939, p. 75).