Pycnosteus palaeformis Preobrazhensky, 1911

1837     Trionyx spinosus — Kutorga, pp. 12, fig. IV 11

1895     Psammosteus arenatus — Woodward, pp. 39

1902     Psammosteiden — Jaekel, pp. 105

1908     Psammosteus arenatus : Woodward, 1895 — Goodrich, pp. 774, fig. 43:4

1911     Pycnosteus imperfectus n. sp. — Preobrazhensky, pp. 27-28, fig. 1:6

1911     Pycnosteus palaeformis n. sp. — Preobrazhensky, pp. 21-27, fig. 1:1-5

1930     Pycnosteus palaeformis Preobr. (pars) — Gross, pp. 5,11, 13

1930     Pycnosteus ? — Gross, pp. 13

1931     Pycnosteus palaeformis Preobr. — Obruchev, pp. 94

1933     Pycnosteus palaeformis Preobr. (pars) — Gross, pp. 13, fig. II fig 22,23

1933     Psammolepis (Pycnosteus) imperfecta Preobr. — Gross, pp. 12-13

1935     Pycnosteus palaeformis (pars) — Gross, pp. 12-16, fig. II 1

1940     Pycnosteus palaeformis Preobrazhensky, 1911 — Obruchev, pp. 768, fig. text fig. 1d and3

1940     Schizosteus (?) imperfectus Preobrazhensky, 1911 — Obruchev, pp. 767

1940     Schizosteus? imperfectus — Obruchev, pp. 767

1947     Pycnosteus palaeformis Preobrajenski — Obruchev, pp. 196, fig. L 4

1956     Pycnosteus imperfectus (Obruchev) — Mark, pp. 74-76, fig. 1a, 2a

1956     Pycnosteus palaeformis Preobr. — Mark, pp. 76-77, fig. I 1; II 1, text fig. 1b, 2b, 3a

1956     Pycnosteus imperfectus (Preobr) — Mark, pp. 33, fig. 3a

1961     Pycnosteus palaeformis Preobr. — Mark, pp. 33, fig. text fig. 3a

1964     Pycnosteus palaeformis Preobrazhensky, 1911 — Obruchev, fig. text fig. 48,49

1964     Pycnosteus palaeformis Preobrazhensky, 1911 — Halstead Tarlo, fig. III 1,3, text fig. 7

1965     Pycnosteus palaeformis Preobrazhensky, 1911 — Obruchev & Mark-Kurik, pp. 135, fig. XXV 1-3;

1965     Pycnosteus palaeformis Preobrazhensky, 1911 — Halstead Tarlo, pp. 69, fig. XVIII 2, text fig. 16

1965     Pycnosteus palaeformis Preobrazhensky, 1911 — Novitskaya, pp. 260, fig. text fig. 202

1968     Pycnosteus palaeformis Preobrazhensky, 1911 — Obruchev & Mark-Kurik, fig. text fig. 1, 2b

2000     Pycnosteus palaeformis Preobr. — Mark-Kurik, pp. 314

2001     Pycnosteus palaeformis Preobrazhensky, 1911 — Moloshnikov, pp. 73, fig. text fig. 1-6

2004     Pycnosteus palaeformis Preobrazhensky, 1911 — Novitskaya, pp. 178, fig. 104

2011     Pycnosteus palaeformis Preobrazhensky, 1911 — Ivanov & Lebedev, fig. text fig 10B,10C