Cavelier, C. &Pomerol, C. (1986): Stratigraphy of the Paleogene. - Bull. Soc. géol. France, (8),II (2): 255–265; Paris.
Cray, P. (1973): Marsupialia, Insectivora, Primates, Creodonta and Carnivora from the Headon Beds (Upper Eocene) of Southern England. - Bull. Brit. Mus. (N.H.) Geology,23 (1): 1–102; London.
Crusafont-Pairo, M. &Russell, D.E. (1967): Un nouveau Paroxyclaenide de l’Eocène d’Espagne. - Bull. Mus. nat. Hist. Nat., 2 sér.,38 (5): 757–773; Paris.
Deperet, C. (1910): Etudes sur la famille des lophiodontidés. - Bull. Soc. géol. France,4 (10): 558–577; Paris.
Franzen, J. L. &Haubold, H. (1986): The Middle Eocene of European Mammalian Stratigraphy. Definition of the Geiseltalian. - Modern Geology,10: 159–170; U.K.
Gabunia, L. K. &Biryukov, N. D. (1978): On the presence of a peculiar representative of Arctocyonoids in the Paleogene of Asia. - Bull. Acad. Sci. Georgian S.S.R.,92 (2): 489–492; Tbilisi, [in Russian]
Gingerich, P. D. &Russell, D. E. (1981):Pakicetus inachus, a new archaeocete (Mammalia, Cetacea) from the early-middle Eocene Kuldana Formation of Kohat (Pakistan). - Contrib. Mus. Paleont. Univ. Michigan,25 (11): 235–246; Ann Arbor.
Godinot, M. (1984): Un nouveau genre de Paromomyidae (Primates) de l’Eocène inférieur d’Europe.- Folia primat.,43: 84–96; Basel.
Godinot, M.;Crochet J.-Y.;Hartenberger, J.-L;Lange-Badre, B.;Russell, D. E. &Sige, B. (1987): Nouvelles données sur les mammifères de Palette (Eocène inférieur, Provence). - Münch. Geowiss. Abh. (A)10: 273–288; München.
Heissig, K. (1977): Neues Material vonCryptopithecus (Mammalia, Pantolestidae) aus dem Mitteloligozän von “Möhren 13” in Mittelfranken. - Mitt. Bayer. Staatslg. Paläont. hist. Geol.,17: 213–225; München.
Hooker, J. J. (1984): A primitive ceratomorph (Perissodactyla, Mammalia) from the early Tertiary of Europe. - Zool. J. Linnean Soc,82: 229–244: London.
— (1986): Mammals from the Bartonian (middle/late Eocene) of the Hampshire Basin, southern England. -Bull. Brit. Mus. (N.H.), Geology,39 (4): 191–478; London.
Jaeger, J. J. (1966): Révision de la faune de Mammifères du Lutétien de Bouxwiller (Bas-Rhin). - Unpubl. Thesis, Fac. Sci. Univ. Strasbourg, Inst. Géol.
Koenigswald, W. v. (1983): Skelettfunde vonKopidodon (Condylarthra, Mammalia) aus dem mitteleozänen Ölschiefer von Messel bei Darmstadt. - N. Jb. Geol. Paläont. Abh.,167 (1): 1–39; Stuttgart.
Kretzoi, M. (1943):Kochictis centennii n. g. n. sp., ein altertümlicher Creodonte aus dem Oberoligozän Siebenbürgens. - Föld. Közl,73 (1–3): 190–195; Budapest.
McKenna, M. C (1975): Toward a Phylogenetic Classification of the Mammalia. - [In:] Luckett, W. P. & Szalay, F. S. (eds.): Phylogeny of the Primates: 21–46; Plenum Press, New York.
Matthes, H. W. (1952): Die Creodontier aus der mitteleozänen Braunkohle des Geiseltales. - Hallesches Jb. Mitt. Erdgesch.,1: 201–240; Halle.
Osborn, H. F. (1908): New fossil mammals from the Fayûm Oligocène, Egypt. - Bull. Amer. Mus. Nat. Hist.,24 (16): 265–272; New York.
Radinsky, L. B. (1964):Paleomoropus, a new Early Eocene Chalicothere (Mammalia, Perissodactyla), and a Revision of Eocene chalicotheres. - Amer. Mus. Novitates,2179: 1–28; New York.
Rich, T. H. (1971): Deltatheridia, Carnivora, and Condylarthra (Mammalia) of the early Eocene, Paris Basin, France. - Univ. Calif. Publ. Geol. Sci.,88: 1–72; Berkeley.
Savage, D. E.;Russell, D. E. &Louis, P. (1965): European Eocene Equidae (Perissodactyla). - Univ. Calif. Publ. Geol. Sci.,56: 1–94; Berkeley.
Teilhard de Chardin, P. (1922): Mammifères de l’Eocène inférieur français. - Ann. Paléont.,11:9–116; Paris.
Tobien, H. (1969):Kopidodon (Condylarthra, Mammalia) aus dem Mitteleozän (Lutetium) von Messel bei Darmstadt (Hessen). - Notizbl. hess. L. - Amt Bodenforsch.,97: 7–37; Wiesbaden.
Simons, E. L. &Gingerich, P. D. (1974): New carnivorous mammals from the Oligocène of Egypt. -Ann. Geol. Surv. Egypt,4: 157–166; Cairo.
Van Valen, L. (1965): Paroxyclaenidae, an extinct family of Eurasian Mammals. - J. Mammal.,46 (3): 388–397; Lawrence.
— (1966): Deltatheridia, a New Order of Mammals. - Bull. Amer. Mus. Nat. Hist.,132 (1): 1–126; New York.
— (1967): New Paleocene insectivores and insectivore classification. - Bull. Amer. Mus. Nat. Hist.,135 (5): 217–284; New York.