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Phenacodonta

Mammalia

Taxonomy
Phenacodonta was named by McKenna (1975) [Mirorder]. It is extant. It was considered paraphyletic by Archibald (1998).

It was assigned to Ungulata by McKenna (1975); to Taxeopoda by Archibald (1998) and Gheerbrant et al. (2001); and to Panperissodactyla by Halliday et al. (2017).

Synonymy list
YearName and author
1975Phenacodonta McKenna p. 42
1998Phenacodonta Archibald p. 299
2001Phenacodonta Gheerbrant et al. p. 111
2017Phenacodonta Halliday et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
RankNameAuthor
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Theriamorpha(Rowe 1993)
—Theriiformes()
—Trechnotheria
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
—Panperissodactyla
—Phenacodonta
—Phenacodonta

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Unr. Phenacodonta McKenna 1975
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G. †Olbitherium Tong et al. 2004
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†Olbitherium millenariusum Tong et al. 2004
Fm. †Phenacodontidae Cope 1881 [condylarth]
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G. †Almogaver Crusafont-Pairo and Villalta 1954
G. †Copecion Gingerich 1989
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†Copecion davisi Gingerich 1989
G. †Eodesmatodon Zheng and Chi 1978
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†Eodesmatodon spanios Zheng and Chi 1978
G. †Lophocion Wang and Tong 1997
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†Lophocion asiaticus Wang and Tong 1997
†Lophocion grangeri Bai et al. 2019
Subfm. †Meniscotheriinae Cope 1882
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G. †Ectocion Cope 1882
+
†Ectocion cedrus Thewissen 1990
†Ectocion collinus Russell 1929
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Invalid names: Gidleyina montanensis Gidley 1935 [synonym], Gidleyina silberlingi Gidley 1935 [synonym], Gidleyina wyomingensis Gazin 1956 [synonym], Meniscotherium semicingulatum Russell 1929 [synonym], Tetraclaenodon superior Simpson 1935 [synonym]
†Ectocion ignotum Novacek et al. 1991
†Ectocion major Patterson and West 1973
†Ectocion mediotuber Thewissen 1990
†Ectocion nanabeensis Beard and Dawson 2009
†Ectocion osbornianus Cope 1882
+
Invalid names: Ectocion ralstonensis Granger 1915 [synonym]
†Ectocion parvus Granger 1915
†Ectocion superstes Granger 1915
Invalid names: Gidleyina Simpson 1935 [synonym], Prosthecion Patterson and West 1973 [synonym]
G. †Meniscotherium Cope 1874
+
+
Invalid names: Hyracops socialis Marsh 1892 [synonym], Meniscotherium robustum Thorpe 1934 [synonym], Meniscotherium terraerubrae Cope 1881 [synonym]
†Meniscotherium priscum Granger 1915
Invalid names: Hyracops Marsh 1892 [synonym]
G. †Phenacodus Cope 1873
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†Phenacodus bisonensis Gazin 1956
†Phenacodus grangeri Simpson 1935
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Invalid names: Tetraclaenodon transitus Dorr 1958 [synonym]
†Phenacodus intermedius Granger 1915
†Phenacodus magnus Thewissen 1990
†Phenacodus matthewi Simpson 1935
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Invalid names: Phenacodus gidleyi Simpson 1935 [synonym]
†Phenacodus sulcatus Cope 1874
†Phenacodus trilobatus Cope 1881
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Invalid names: Phenacodus robustus Simpson 1937 [synonym]
†Phenacodus vortmani Cope 1880
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Invalid names: Phenacodus almiensis Gazin 1942 [synonym], Phenacodus apternus Cope 1882 [synonym], Phenacodus copei Granger 1915 [synonym]
†Phenacodus zuniensis Cope 1881
Invalid names: Eohyus Marsh 1894 [synonym], Opisthotomus Cope 1875 [synonym], Phenacodus hemiconus Cope 1882 [nomen dubium], Phenacodus primaevus Cope 1873 [nomen dubium], Trispondylus Cope 1884 [replaced]
G. †Tetraclaenodon Scott 1892
+
+
Invalid names: Mioclaenus floverianus Cope 1888 [synonym], Phenacodus calceolatus Cope 1883 [synonym], Protogonia plicifera Cope 1882 [synonym], Protogonia subquadrata Cope 1881 [synonym], Protogonia zuniensis Cope 1888 [synonym], Tetraclaenodon symbolicus Gidley 1935 [synonym]
Invalid names: Euprotogonia Cope 1893 [synonym], Protogonia Cope 1881 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: scansorialsubc
Diet: insectivoresubc
Reproduction: viviparoussubc
Created: 2005-09-06 20:43:42
Modified: 2005-09-06 22:44:32
Source: subc = subclass, c = class, subp = subphylum
References: Lillegraven 1979, Ji et al. 2002, Carroll 1988, Hendy et al. 2009

Age range: base of the Ti1 to the top of the Late/Upper Eocene or 61.70000 to 33.90000 Ma

Collections (808 total)


Time interval Ma Country or state Original ID and collection number
Danian66.0 - 61.6USA (North Dakota) Ectocion wyomingensis, Phenacodus primaevus (14962)
Tertiary66.0 - 2.58Spain (Barcelona) Phenacodontidae indet. (37114)
Torrejonian63.8 - 60.9USA (New Mexico) Tetraclaenodon puercensis (14811 14812 14815 14816 14818 14824 14825 14826 14832 14833 14835 14862 14865 14867 14868 14869 14870 14873 14891 14892 14893) Tetraclaenodon sp. (14813 14819 14823)
Torrejonian63.8 - 60.9USA (Texas) Phenacodus grangeri, Phenacodus matthewi (14884) Phenacodus grangeri, Phenacodus matthewi, Ectocion montanensis (14956) Phenacodus sp., Phenacodus grangeri, Ectocion montanensis (14975) Tetraclaenodon puercensis (14948)
Torrejonian63.8 - 60.9Canada (Alberta) Tetraclaenodon puercensis (14822 143200)
Torrejonian63.8 - 60.9USA (Wyoming) Tetraclaenodon puercensis (14879 14886 14897 14898 14912)
Torrejonian63.8 - 60.9USA (Montana) Tetraclaenodon puercensis (14874 14906 14915) Tetraclaenodon symbolicus (14907 14913 14914 14918 14920 14924)
Torrejonian - Tiffanian63.8 - 56.8USA (Wyoming) Ectocion sp. (14849) Ectocion sp., Tetraclaenodon sp. (14820) Tetraclaenodon puercensis (14858) Tetraclaenodon sp. (14839 14846 14847)
Ti161.7 - 56.8USA (Montana) Phenacodus bisonensis (15026)
Ti161.7 - 56.8Canada (Alberta) Ectocion collinus (14938 14939 195856)
Ti361.7 - 56.8Canada (Alberta) Ectocion cedrus (14928)
Ti461.7 - 56.8Canada (Saskatchewan) Ectocion osbornianus, Phenacodus primaevus (14978)
Ti561.7 - 56.8USA (Wyoming) Ectocion osbornianus, Phenacodus magnus (46654) Ectocion sp., Phenacodus grangeri, Phenacodus vortmani (46655)
Tiffanian61.7 - 56.8USA (Colorado) Ectocion medituber, Phenacodus grangeri, Phenacodus magnus (174227) Phenacodus grangeri, Phenacodus vortmani (14935 14943)
Tiffanian61.7 - 56.8USA (Wyoming) Ectocion cedrus (190426 190436 190440 190494) Ectocion cedrus, Ectocion collinus (15031) Ectocion cedrus, Phenacodus grangeri (15061) Ectocion cedrus, Phenacodus grangeri, Phenacodus magnus (15071) Ectocion cedrus, Phenacodus magnus (15066) Ectocion collinus (15063) Ectocion collinus, Phenacodus grangeri (14936 15060) Ectocion mediotuber (26569 190406 190421 190427 190442) Ectocion mediotuber, Phenacodus grangeri (15057 190444 190466 190490) Ectocion mediotuber, Phenacodus grangeri, Phenacodus magnus, Phenacodus vortmani (15007 53059) Ectocion mediotuber, Phenacodus grangeri, Phenacodus vortmani (190403 190443) Ectocion mediotuber, Phenacodus vortmani (85096 190470) Ectocion osbornianus (190412 190413 190420 190459 190461 190476 190482 190484) Ectocion osbornianus, Phenacodus grangeri, Phenacodus vortmani (190419 190462 190463) Ectocion osbornianus, Phenacodus vortmani (190481) Ectocion sp. (15054) Ectocion sp., Phenacodus matthewi (15067) Ectocion sp., Phenacodus sp. (14940) Ectocion wyomingensis (14952 14979 14982 14983) Gidleyina wyomingensis, Phenacodus grangeri (15001) Phenacodus bisonensis, Gidleyina wyomingensis (14989) Phenacodus bisonensis, Phenacodus bisonensis (14988) Phenacodus bisonensis, Phenacodus grangeri, Gidleyina wyomingensis (14964) Phenacodus brachypternus, Gidleyina sp., Phenacodus sp. (15034) Phenacodus grangeri (15059 46653 190414 190417 190423 190437 190445 190446 190464 190465 190473 190474 190483 190487 190492 190495) Phenacodus grangeri, Ectocion wyomingensis (15017) Phenacodus grangeri, Gidleyina wyomingensis (14997) Phenacodus grangeri, Phenacodus vortmani (15058 190418 190438 190441 190457 190468) Phenacodus magnus (190404 190471) Phenacodus magnus, Ectocion osbornianus, Phenacodus primaevus (15036) Phenacodus primaevus (14981) Phenacodus primaevus, Ectocion wyomingensis (14980) Phenacodus sp., Ectocion collinus (198262) Phenacodus sp., Gidleyina wyomingensis (14999) Phenacodus sp., Phenacodus grangeri, Ectocion wyomingensis (14926) Phenacodus vortmani (190435) Phenacodus vortmani, Ectocion osbornianus, Phenacodus sp. (15049)
Tiffanian61.7 - 56.8USA (California) Phenacodus bisonensis (143202 224203 224204 224210 224211 224212 224213 224214 224215) Phenacodus bisonensis, Phenacodus matthewi (154724) Phenacodus grangeri (14872) Tetraclaenodon puercensis (14817)
Tiffanian61.7 - 56.8USA (Montana) Ectocion cedrus (15033) Ectocion cedrus, Phenacodus magnus (15002) Ectocion collinus (15047) Ectocion collinus, Phenacodus bisonensis (15025) Ectocion sp. (15010 133180) Gidleyina montanensis (15053) Gidleyina silberlingi (15040) Phenacodus magnus (14993) Tetraclaenodon pliciferus, Ectocion wyomingensis (14937) Tetraclaenodon puercensis (15044) Tetraclaenodon septentrionalis (15045) Tetraclaenodon sp., Gidleyina superior (15037)
Tiffanian61.7 - 56.8Canada (Alberta) Ectocion osbornianus, Phenacodus primaevus (14995) Ectocion sp. (14949 14951 14973) Ectocion wyomingensis (14941 14954 14959)
Tiffanian61.7 - 56.8USA (North Dakota) Ectocion collinus (15006) Ectocion sp. (14976) Ectocion sp., Phenacodus sp. (15000) Ectocion wyomingensis (14931) Ectocion wyomingensis, Phenacodus primaevus (14977) Tetraclaenodon sp. (14966)
Tiffanian - Clarkforkian61.7 - 54.9USA (Wyoming) Phenacodus primaevus (15211) Phenacodus vortmani, Phenacodus primaevus (15035)
Late/Upper Paleocene58.7 - 55.8USA (Wyoming) Ectocion cedrus, Phenacodus grangeri, Phenacodus magnus (15018) Ectocion cedrus, Phenacodus magnus (15024) Ectocion mediotuber, Phenacodus grangeri, Phenacodus vortmani (188220) Phenacodus magnus (188231)
Late/Upper Paleocene58.7 - 55.8USA (Maryland) Phenacodus sp. (14947)
Late/Upper Paleocene - Early/Lower Eocene58.7 - 48.6USA (California) Phenacodus vortmani (224216)
Late/Upper Paleocene - Early/Lower Eocene58.7 - 48.6USA (Wyoming) Ectocion osbornianus (80579)
Cf156.2 - 54.9USA (Wyoming) Ectocion osbornianus, Phenacodus grangeri, Phenacodus vortmani (46649)
Cf256.2 - 54.9USA (Wyoming) Ectocion osbornianus (46679) Phenacodus sp., Ectocion osbornianus, Phenacodus intermedius (46651)
Cf356.2 - 54.9USA (Wyoming) Ectocion osbornianus (46678) Phenacodus sp., Ectocion osbornianus (46676)
Clarkforkian56.2 - 54.9USA (Wyoming) Ectocion major, Ectocion osbornianus, Phenacodus vortmani (164515) Ectocion osbornianus (15073 15082 15093 15100 15113 15117 15122 15125 15128 15129 15130 15134 15136 15145 15153 15157 15166 15167 15168 15170 15175 15179 15194 15202 15208 15209 190416 190422 190430 190433 190485 190486) Ectocion osbornianus, Ectocion parvus, Phenacodus vortmani, Phenacodus primaevus (15092) Ectocion osbornianus, Phenacodus intermedius (15072 15177 154182 164513 190451) Ectocion osbornianus, Phenacodus intermedius, Phenacodus vortmani (190431 190434 190455) Ectocion osbornianus, Phenacodus intermedius, Phenacodus vortmani, Phenacodus sp. (15213) Ectocion osbornianus, Phenacodus primaevus (15085 15087 15091 15094 15095 15096 15099 15101 15103 15104 15105 15106 15107 15108 15109 15110 15111 15112 15114 15119 15120 15121 15123 15126 15127 15131 15133 15135 15137 15138 15139 15144 15146 15148 15149 15150 15151 15154 15155 15159 15160 15162 15163 15164 15171 15173 15174 15176 15178 15180 15182 15184 15185 15186 15187 15189 15192 15193 15196 15198 15200 15201 15203 15205 15206 15207 15212) Ectocion osbornianus, Phenacodus primaevus, Phenacodus sp. (15199) Ectocion osbornianus, Phenacodus sp. (15080 15083 15089 15169) Ectocion osbornianus, Phenacodus sp., Phenacodus primaevus (15183 15204) Ectocion osbornianus, Phenacodus vortmani (15116 15124 15165) Ectocion osbornianus, Phenacodus vortmani, Phenacodus primaevus (15084 15097 15098 15102 15115 15132 15141 15142 15147 15152 15156 15161 15172 15181 15190 15191) Ectocion sp., Phenacodus primaevus, Phenacodus almiensis (15075) Ectocion sp., Phenacodus sp. (15217) Lophocion grangeri (203361) Phenacodontidae indet. (15076) Phenacodus intermedius (15214 164518 190415 190453) Phenacodus primaevus (15078 15140 15188 15197) Phenacodus primaevus, Ectocion ralstonensis (15218) Phenacodus sp., Ectocion osbornianus (15216) Phenacodus vortmani (15077 15143 15210)
Clarkforkian56.2 - 54.9USA (Colorado) Ectocion osbornianus (15249) Ectocion osbornianus, Ectocion parvus, Phenacodus vortmani, Phenacodus primaevus, Prosthecion major (15252) Ectocion osbornianus, Phenacodus primaevus, Prosthecion major (15246) Ectocion osbornianus, Phenacodus vortmani, Phenacodus primaevus (15254) Ectocion parvus, Phenacodus primaevus (15250) Ectocion parvus, Phenacodus vortmani, Phenacodus primaevus (15241) Phenacodus primaevus (15232 15234 15240 15242 15243 15253 15257 15259 15347 15348) Phenacodus vortmani (15233 15237 15239 15245 15344) Phenacodus vortmani, Phenacodus primaevus (15255 15346) Phenacodus vortmani, Phenacodus primaevus, Prosthecion major (15248) Phenacodus vortmani, Prosthecion major (15258)
Clarkforkian56.2 - 54.9USA (Montana) Phenacodus primaevus (15079)
Ypresian56.0 - 47.8Belgium (Brabant) Phenacodus teilhardi (35531)
Ypresian56.0 - 47.8United Kingdom (England) Phenacodus lemoinei (38868)
Ypresian56.0 - 47.8France (Marne) Phenacodus sp. (35539) Phenacodus teilhardi, Phenacodus sp. (35533)
Ypresian56.0 - 47.8France (Aude) Phenacodus sp. (182641)
Ypresian56.0 - 47.8Belgium (Hainaut) Phenacodus teilhardi (87947)
Graybullian55.8 - 50.3USA (Wyoming) Copecion brachypternus, Phenacodus vortmani (15701) Meniscotherium tapiacitis (15878)
Lostcabinian55.8 - 50.3USA (Wyoming) Ectocion superstes, Phenacodus intermedius (16005) Phenacodus intermedius, Phenacodus vortmani (15997) Phenacodus primaevus (16078) Phenacodus vortmani (16000) Phenacodus vortmani, Phenacodus primaevus (15915 15917 15930 16073)
Lysitean55.8 - 50.3USA (Colorado) Phenacodus vortmani (15653)
Lysitean - Lostcabinian55.8 - 50.3USA (Wyoming) Meniscotherium tapiacitis (15451)
Wasatchian55.8 - 50.3USA (California) Meniscotherium sp. (15677)
Wasatchian55.8 - 50.3USA (Texas) Phenacodus primaevus (15847)
Wasatchian55.8 - 50.3Mexico (Baja California) Phenacodus vortmani, Ectocion sp., Meniscotherium priscum (15671)
Wasatchian55.8 - 50.3USA (Wyoming) Copecion brachypternus (46752 46766) Copecion brachypternus, Ectocion osbornianus (46836) Copecion brachypternus, Ectocion osbornianus, Phenacodus intermedius (46761) Copecion brachypternus, Ectocion osbornianus, Phenacodus intermedius, Phenacodus trilobatus, Phenacodus vortmani (46792) Copecion brachypternus, Ectocion osbornianus, Phenacodus intermedius, Phenacodus vortmani (15592 46809) Copecion brachypternus, Ectocion osbornianus, Phenacodus vortmani (46636) Copecion brachypternus, Phenacodus intermedius (46675) Copecion brachypternus, Phenacodus intermedius, Phenacodus trilobatus, Phenacodus vortmani (15707) Copecion brachypternus, Phenacodus intermedius, Phenacodus vortmani (15687) Copecion davisi (15761 15831 15832 16053 27349 27352 27353) Copecion davisi, Ectocion osbornianus, Ectocion parvus (15834) Copecion davisi, Ectocion osbornianus, Ectocion parvus, Phenacodus intermedius (15759) Copecion davisi, Ectocion parvus (15760 15780 15817) Copecion davisi, Ectocion parvus, Phenacodus vortmani (15458) Ectocion osbornianus (15475 15476 15477 15503 15518 15792 15943 16015 16020 46639 46658 46662 46670 46681 46726 46727 46774 46775 46786 46790 46795 46798 46801 46802 46821 46822 46823 46824 46831 46834) Ectocion osbornianus, Meniscotherium tapiacitum (15673) Ectocion osbornianus, Phenacodus intermedius (15517 15695 15704 46641 46644 46664 46672 46673 46724 46770 46771 46776 46780 46782 46791 46797 46805 46817 46818 46838) Ectocion osbornianus, Phenacodus intermedius, Phenacodus trilobatus (15697 15699 46772) Ectocion osbornianus, Phenacodus intermedius, Phenacodus vortmani (15505 15512 15514 15590 15683 46643 46807 46812 46814 46819) Ectocion osbornianus, Phenacodus intermedius, Phenacodus vortmani, Phenacodus brachypternus (15510 15516) Ectocion osbornianus, Phenacodus intermedius, Phenacodus vortmani, Phenacodus primaevus (15520) Ectocion osbornianus, Phenacodus intermedius, Phenacodus vortmani, Phenacodus primaevus, Phenacodus brachypternus (15507) Ectocion osbornianus, Phenacodus primaevus (15493 15504 15515 15522 15523 15531 15532 15756) Ectocion osbornianus, Phenacodus sp. (15793) Ectocion osbornianus, Phenacodus trilobatus (15682 46756 46773) Ectocion osbornianus, Phenacodus vortmani (15587 15589 15912 46647 46657 46659 46759 46768 46803 46813 46830) Ectocion osbornianus, Phenacodus vortmani, Phenacodus primaevus (15524) Ectocion osbornianus, Phenacodus vortmani, Phenacodus primaevus, Phenacodus brachypternus (15491 15729 16055) Ectocion parvus (15647 15771 15789) Ectocion sp., Phenacodus sp. (15996 16075) Ectocion superstes (186944) Meniscotherium chamense (15457 15486 15643 15644 15665 15710 15711 15849 15850 16064 16069 16072) Meniscotherium chamense, Phenacodus vortmani (15456 15839) Meniscotherium chamense, Phenacodus vortmani, Phenacodus primaevus (15852) Meniscotherium robustum (15662 15724 15846 15890 186943) Meniscotherium sp. (15597 15842 15843) Meniscotherium tapiacetum (118482) Meniscotherium tapiacitis (15721) Meniscotherium tapiacitum (15891) Meniscotherium terraerubae (15910) Phenacodus brachypternus (15540) Phenacodus brachypternus, Meniscotherium priscum (15717) Phenacodus brachypternus, Phenacodus vortmani (15551 15554 15578) Phenacodus brachypternus, Phenacodus vortmani, Phenacodus primaevus (15964) Phenacodus intermedius (46640 46650 46669 46671 46674 46680 46687 46688 46689 46719 46721 46730 46731 46732 46738 46763 46788 46789 46804 46816 46837 46839) Phenacodus intermedius, Phenacodus brachypternus (15511) Phenacodus intermedius, Phenacodus trilobatus (15698 15705 46645 46733 46736 46739 46767) Phenacodus intermedius, Phenacodus trilobatus, Phenacodus vortmani (15694 15702 46682) Phenacodus intermedius, Phenacodus vortmani (15509 15566 46683 46693 46794 46808) Phenacodus primaevus (15474 15519 15533 15549 15573 15661 16023 16057) Phenacodus primaevus, Ectocion ralstonensis (16008) Phenacodus primaevus, Meniscotherium priscum (15455) Phenacodus primaevus, Phenacodus brachypternus (15534 15536 15542) Phenacodus sp. (15594 15688 15696 15900 15914 15931 15936 15937 46638 46697 46748 46757 46829 46832) Phenacodus sp., Ectocion osbornianus (15586 46637 46652 46690 46691 46793) Phenacodus sp., Ectocion osbornianus, Phenacodus brachypternus (15932) Phenacodus sp., Meniscotherium chamense (15714) Phenacodus trilobatus (15593 46698 46718 46735 46745 46753 46760 46762 46846 46852 186939) Phenacodus trilobatus, Phenacodus vortmani (46749) Phenacodus vortmani (15467 15541 15544 15547 15548 15550 15553 15557 15563 15564 15567 15575 15576 15588 15619 15648 15692 15703 15934 15959 15963 46685 46692 46694 46696 46699 46700 46704 46705 46707 46734 46741 46742 46746 46754 46810 46811 46820 46847 46849 46851) Phenacodus vortmani, Meniscotherium sp. (15889) Phenacodus vortmani, Phenacodus brachypternus (15543 15552) Phenacodus vortmani, Phenacodus brachypternus, Phenacodus primaevus (15468) Phenacodus vortmani, Phenacodus primaevus (15555 15556 15933 15942) Phenacodus vortmani, Phenacodus primaevus, Phenacodus brachypternus (15538 15558 15559)
Wasatchian55.8 - 50.3USA (Utah) Phenacodus sp. (15716)
Wasatchian55.8 - 50.3USA (Colorado) Ectocion osbornianus, Phenacodus intermedius, Phenacodus brachypternus, Phenacodus matthewi (15887) Ectocion osbornianus, Phenacodus intermedius, Phenacodus primaevus (15845) Ectocion osbornianus, Phenacodus primaevus, Phenacodus brachypternus (15352) Meniscotherium chamense (15272 15274 15290 15294 15402 15404) Meniscotherium tapiacitum (15314 15365 15368 15373 15376) Meniscotherium tapiacitum, Phenacodus primaevus (15371 15372 15374 15379) Phenacodus brachypternus (15325 15351 15353 15367 15375 15394 15395 15485 15871) Phenacodus intermedius (15646) Phenacodus intermedius, Phenacodus primaevus, Phenacodus brachypternus (15450) Phenacodus primaevus (15220 15261 15342 15349 15358 15361 15364 15370 15377 15380 15381 15383 15384) Phenacodus primaevus, Phenacodus brachypternus (15363) Phenacodus primaevus, Phenacodus matthewi (15480) Phenacodus sp. (15858 15860 15864 15870) Phenacodus vortmani (15225 15279 15385 15650) Phenacodus vortmani, Phenacodus primaevus, Phenacodus brachypternus (15350)
Wasatchian55.8 - 50.3USA (New Mexico) Meniscotherium chamense (15430 15433 15441 15443) Meniscotherium chamense, Meniscotherium tapiacitum, Phenacodus brachypternus (15663) Meniscotherium chamense, Phenacodus vortmani (15439) Meniscotherium sp. (15447) Phenacodus omnivorus (15452) Phenacodus primaevus (15602 15605 15611 15612) Phenacodus sp. (15442 15448)
Wasatchian55.8 - 50.3USA (Mississippi) Ectocion sp. (15719)
Early/Lower Eocene55.8 - 48.6Germany (Sachsen-Anhalt) Propachynolophus gaudryi (45749)
Early/Lower Eocene55.8 - 48.6USA (Wyoming) Copecion davisi (154261 154268 154274 154278 154281 154283 154286) Copecion davisi, Ectocion parvus (154254 154259 154269 154271 154272) Copecion davisi, Ectocion parvus, Phenacodus intermedius (154251 154257 154262 154264) Copecion davisi, Ectocion parvus, Phenacodus intermedius, Phenacodus vortmani (154255) Ectocion osbornianus, Phenacodus vortmani, Phenacodus sp. (15679) Ectocion parvus (15591 154253 154258 154265 154270 154287) Ectocion parvus, Phenacodus intermedius (154277) Meniscotherium priscum (80580) Phenacodus sp. (15690) Phenacodus trilobatus (15708) Phenacodus vortmani (15680 15684 15685 15700)
Early/Lower Eocene55.8 - 48.6China (Shandong) Olbitherium millenariusum, Lophocion asiaticus (77929)
Wasatchian - Bridgerian55.8 - 46.2USA (Wyoming) Meniscotherium chamense (15669) Phenacodus sp. (16134)
Bridgerian50.3 - 46.2USA (Wyoming) Ectocion superstes, Phenacodus vortmani, Phenacodus primaevus (16207) Phenacodus primaevus (16084 16137 16244 16415) Phenacodus sp. (16135 16505)
Late/Upper Eocene37.2 - 33.9China (Guangxi) Eodesmatodon spanios (182554)