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Megacricetodon
Taxonomy
Democricetodon (Megacricetodon) was named by Fahlbusch (1964).
It was reranked as Megacricetodon by Mein and Freudenthal (1971), Qiu et al. (1981), Lalaï (1986), McKenna and Bell (1997), Pickford et al. (2000), Vasileiadou and Koufos (2005), Maridet et al. (2011), Oliver and Peláez-Campomanes (2016).
It was assigned to Democricetodon by Fahlbusch (1964); to Megacricetodontini by Mein and Freudenthal (1971); to Cricetidae by Qiu et al. (1981), Lalaï (1986), McKenna and Bell (1997); to Megacricetodontidae by Pickford et al. (2000); to Cricetini by Vasileiadou and Koufos (2005); to Cricetinae by Maridet et al. (2011); and to Cricetodontinae by Oliver and Peláez-Campomanes (2016).
It was reranked as Megacricetodon by Mein and Freudenthal (1971), Qiu et al. (1981), Lalaï (1986), McKenna and Bell (1997), Pickford et al. (2000), Vasileiadou and Koufos (2005), Maridet et al. (2011), Oliver and Peláez-Campomanes (2016).
It was assigned to Democricetodon by Fahlbusch (1964); to Megacricetodontini by Mein and Freudenthal (1971); to Cricetidae by Qiu et al. (1981), Lalaï (1986), McKenna and Bell (1997); to Megacricetodontidae by Pickford et al. (2000); to Cricetini by Vasileiadou and Koufos (2005); to Cricetinae by Maridet et al. (2011); and to Cricetodontinae by Oliver and Peláez-Campomanes (2016).
Subtaxa
M. (Collongomys), M. (Megacricetodon) (syn. M. (Mesocricetodon)), M. andrewsi, M. bavaricus, M. beijiangensis, M. bourgeoisi, M. collongensis, M. crusafonti, M. debruijni (syn. M. freudenthali), M. dzhungaricus, M. gregarius, M. hellenicus, M. ibericus, M. lopezae, M. minor, M. minutus, M. primitivus, M. pusillus, M. rafaeli, M. similis, M. sinensis, M. yei
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1964 | Democricetodon (Megacricetodon) Fahlbusch p. 49 |
| 1971 | Megacricetodon Mein and Freudenthal p. 23 |
| 1981 | Megacricetodon Qiu et al. |
| 1986 | Megacricetodon Lalaï |
| 1997 | Megacricetodon McKenna and Bell |
| 2000 | Megacricetodon Pickford et al. p. 259 |
| 2005 | Megacricetodon Vasileiadou and Koufos p. 215 |
| 2011 | Megacricetodon Maridet et al. p. 453 |
| 2016 | Megacricetodon Oliver and Peláez-Campomanes p. 211 |
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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.
G. †Megacricetodon Fahlbusch 1964
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Subg. †Megacricetodon (Collongomys) Mein and Freudenthal 1971
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†Megacricetodon (Collongomys) lappi Mein 1958
Subg. †Megacricetodon (Megacricetodon) Fahlbusch 1964
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Invalid names: Megacricetodon (Mesocricetodon) Daxner 1967 [synonym]
†Megacricetodon andrewsi Pelaez-Campomanes and Daams 2002
†Megacricetodon bavaricus Fahlbusch 1964
†Megacricetodon beijiangensis Maridet et al. 2011
†Megacricetodon bourgeoisi Schaub 1925
†Megacricetodon collongensis Mein 1958
†Megacricetodon crusafonti Freudenthal 1963
†Megacricetodon debruijni Freudenthal 1968
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Invalid names: Megacricetodon freudenthali Garcia Moreno 1986 [synonym]
†Megacricetodon dzhungaricus Kordikova and de Bruijn 2001
†Megacricetodon gregarius Schaub 1925
†Megacricetodon hellenicus Oliver and Peláez-Campomanes 2016
†Megacricetodon ibericus Schaub 1944
†Megacricetodon lopezae Garcia Moreno 1986
†Megacricetodon minor Lartet 1851
†Megacricetodon minutus Daxner 1967
†Megacricetodon primitivus Mein and Freudenthal 1971
†Megacricetodon pusillus Qiu 1996
†Megacricetodon rafaeli Daams and Freudenthal 1988
†Megacricetodon similis Fahlbusch 1964
†Megacricetodon sinensis Qiu et al. 1981
†Megacricetodon yei Bi et al. 2008
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| V. Fahlbusch 1964 | Längstgrat an unteren und oberen Molaren kurz, gebogen oder gestreckt; Außenbucht der unteren Molaren meist ein wenig nach rückwärts gebogen; Innenbucht der oberen Molaren manchmal etwas nach vorne gebogen; Vorderknospe des m1 lang, ein- oder zweigipfelig; Voderknospe des M1 stets gefurcht; Jochkanten der oberen Molaren meist einfach, transversal oder nach hinten gerichtet; am M1 und M2 meist ein rückwärtiger Paraconussporn vorhanden. | |
| P. Mein and M. Freudenthal 1971 | Taille- très petite à moyenne
Crâne- voir les charactères de la sous-famille Mandibule- Généralement le corps de la mandibule est incliné lingualement par rapport à la rangée dentaire; cepedant cette inclinaison est moindre que chez Democricetodon; en vue verticale le foramen mentale est visible ou caché; ce foramen est placé assez haut sur le diastème. Le diastème est creux. Les crêtes massétériennes sont fortement développées, la crête inférieur est courbe. En vue laterale la m3 est partiellement (rarement complètement cachée par la branche montante. La point de l'incisive inférieur est presque toujours plus basse que la surface masticatrice (rarement au même niveau). Le foramen mandibulare est plus haut ou plus bas que la surface masticatrice. Molaires- brachyodont, graciles (la largeur est faible par rapport à la longeur). Molaires supérieures - Toujours avec trois racines longues (une quatrième racine vestigale peut être présente dans la centre de la M1). L'antérocône de M1 est bifide et n'a jamais d'éperon postérieur. Le paracône de M1 et M2 peut en avoir, mais celui-ci ne se développe jamais en ectolophe continu. Les mésolophes de M1 sont variables. Le postérosinus peut être petit, mais reste présent. La connection entre paracône et protocône est simple, ou double et asymétrique. Molaires inférieures - Toujours avec deux racines (une troisième racine vestigal peut être présent sous le centre de la m1. La m1 a l'antéroconide simple ou bifide. Les mésolophides de m1 et m2 sont très variables, le mésolophide de m3 n'est que rarement présent. La m3 est très réduite, c'est toujours la dent la plus courte de la rangée dentaire inférieure. La m1 est la dent la plus longue dans la mandibule, et elle a un contour allongé et gracile. Incisive supérieur-(d'après une crâne écrasé de M. crusafonti provenant d'Oeningen, et conservé dans le Musée Teyler, Haarlem, Pays-Bas, et plusiers crânes de M. gregarius de La Grive-St. Alban) ophistodontes, sans stries. Incisive inférieur- sans stries sur la face antérieur. Humérus - sans foramen entépicondylien. | |
| A. Oliver and P. Peláez-Campomanes 2016 | Small-sized species of Megacricetodon. It shows slender crests and well-developed mesolophs and mesolophids (generally of medium length). Lower first molars with rounded and simple anteroconid, being lower than the other four main cusps. Upper molars with long and angular entoloph and transverse sinus |
Measurements
No measurements are available
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| Source: o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Nowak 1999, Hendy et al. 2009, Lillegraven 1979, Ji et al. 2002, Carroll 1988 | |||||
Collections (161 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Aquitanian - Burdigalian | Spain (Navarre) | M. primitivus (207107) | |
| Early/Lower Miocene | Switzerland (Aargau) | M. bavaricus (201974) | |
| Early/Lower Miocene - Middle Miocene | Spain (Castile-La Mancha) | M. minor (136269) | |
| Miocene | Germany (Bayern) | M. germanicus (48493 48511) | |
| Miocene | Spain (Valencia) | M. minor (35751) | |
| Miocene | France (Vaucluse) | M. germanicus (201494) M. germanicus, M. schaubi (201495) M. similis (201492) | |
| Miocene | Germany (Baden-Württemberg) | Democricetodon gregarius (48513) | |
| Miocene | Spain (Zaragoza) | M. rafaeli (35875) | |
| Burdigalian | Germany (Bavaria) | M. bavaricus (205184) | |
| Burdigalian | France (Provence-Alpes-Côte d'Azur) | M. bavaricus (37238) | |
| Burdigalian | Greece | M. primitivus, M. hellenicus (68032) | |
| Burdigalian | Germany (Baden-Württemberg) | M. collongensis, M. sp. (69098) | |
| Burdigalian | Spain (Valencia) | M. collongensis (40031) | |
| Burdigalian | France (Languedoc-Roussillon Region) | M. collongensis (36884 36886 37050) M. collongensis, Collongomys lappi (36885) | |
| Burdigalian | Spain (Zaragoza) | M. collongensis (40716) | |
| Burdigalian | Serbia (Serbia) | M. sp. (199782) | |
| Burdigalian | China (Jiangsu) | M. collongensis (41813 43400) | |
| Burdigalian - Langhian | France (Languedoc-Roussillon Region) | M. collongensis (36877) | |
| Burdigalian - Langhian | Germany (Bayern) | Democricetodon gregarius (48319 48320) | |
| Burdigalian - Langhian | France (Alpes-de-Haute-Provence) | M. bavaricus (37239) | |
| Burdigalian - Serravallian | Pakistan (Baluchistan) | M. sp. (180613 180619 180629) | |
| MN 3 | China (Xinjiang) | M. beijiangensis (125716) | |
| MN 3 | Switzerland (Sankt Gallen) | M. sp. (46280) | |
| MN 3 | Pakistan (Balochistan) | M. daamsi (77780) | |
| Orleanian | Spain (Madrid) | M. minor (40747) | |
| MN 4 | Switzerland (Zürich) | M. collongensis (46268 46269) | |
| MN 4 | Switzerland (Sankt Gallen) | M. collongensis (46284) | |
| MN 4 | France (Midi-Pyrénées) | M. bezianensis (71873) | |
| MN 4 | France (Gers) | M. primitivus (69099) | |
| MN 4 - MN 5 | Greece (Macedonia) | M. primitivus (73861) | |
| MN 4 - MN 5 | Spain | M. crusafonti, M. collongensis (70805) | |
| Shanwangian | China (Jiangsu) | M. sinensis (235551 235559 235566) | |
| Langhian | Spain (Catalonia) | M. primitivus (180192) | |
| Langhian | Germany (Bayern) | M. minor (44977 45598 45604 45612) M. minor, M. germanicus (45613) M. minor, M. lappi (45597) | |
| Langhian | France | M. bavaricus, M. collongensis, M. germanicus (90354) | |
| Langhian | France (Languedoc-Roussillon Region) | M. gersii (36888) | |
| MN 5 | Switzerland (Schaffhausen) | M. bavaricus (46267) | |
| MN 5 | Switzerland (Sankt Gallen) | M. germanicus (46285) | |
| MN 5 | Germany | M. collongensis (46955) | |
| MN 5 | Germany (Baden-Wurttemberg) | M. minor, M. lappi (175727) | |
| MN 5 | Germany (Bavaria) | M. minor, M. lappi (205187) M. minor, M. sp., M. germanicus (49418) | |
| MN 5 | France (Midi-Pyrenees Region) | M. collongensis (32071 32072) | |
| MN 5 | Germany (Baden-Württemberg) | M. bavaricus, M. minor (48325) | |
| MN 5 | Portugal (Região Centro) | M. collongensis (136322 136334) | |
| MN 5 | Türkiye (Bursa) | M. sp. (68547) | |
| MN 5 | Germany (Bayern) | M. bavaricus (44955 44971) M. bavaricus, Democricetodon gregarius (48318) M. germanicus (44972 44973 49519) M. minor, M. germanicus (44974) M. minor, M. lappi (44975) M. minor, M. lappi, M. sp. (44976) | |
| MN 5 | Switzerland (Zürich) | M. germanicus (46225 46271) M. minor, M. germanicus (46229 46234 46236) M. minor, M. minor (46286) | |
| MN 5 - MN 6 | Türkiye (Ankara) | M. sp. (199742) | |
| Astaracian | Serbia (Toplica) | M. similis (236048) | |
| Astaracian | Greece (Mygdonia) | M. minor (205366) | |
| Langhian - Serravallian | France (Languedoc-Roussillon Region) | M. minor, M. gersii (36887) | |
| Langhian - Serravallian | France (Midi-Pyrenees) | M. minor (32191) | |
| Langhian - Serravallian | Poland (Silesia) | M. bavaricus (42594) | |
| Middle Miocene | China (Qinghai) | M. sinensis (34670 34672) | |
| Middle Miocene | Switzerland (Aargau) | M. bavaricus (201975 201976) | |
| Middle Miocene | Spain (Madrid) | M. collongensis (197674) M. sp. (197672) | |
| Middle Miocene | Spain | M. minor, M. ibericus (197676) | |
| Middle Miocene | Greece (Katerini) | M. sp. (205388) | |
| Middle Miocene | Greece (Aegean) | M. primitivus (205389 205390) | |
| MN 5 - MN 7 + 8 | Switzerland (Aargau) | M. sp. (46279) | |
| Middle Miocene - Late/Upper Miocene | China (Nei Mongol) | M. sp. (13483) | |
| MN 6 | Slovakia (Bratislava) | M. gregarius, M. schaubi (69711) | |
| MN 6 | Spain | M. lopezae (78752) | |
| MN 6 | Romania (Bihor) | M. sp. (200044) | |
| MN 6 | Germany (Bayern) | M. bavaricus, M. minor (45610) M. minor (45603 49517 49521 49522) M. minor, M. germanicus (45611) M. similis (45614) | |
| MN 6 | Hungary | M. minor (68118) | |
| MN 6 | Switzerland (Zürich) | M. minor (49578) M. minor, M. minor (46272) M. similis (46273 46287) M. sp. (46243) | |
| MN 6 | Russian Federation (Stavropol) | M. similis (56738) | |
| MN 6 | Portugal (Santarém) | M. crusafonti (38137 38139 38157) | |
| Serravallian | Slovakia (Bratislava) | M. sp. (58983) | |
| Serravallian | France (Languedoc-Roussillon Region) | M. roussillonensis (36889) M. roussillonensis, M. minor - similis (36976) | |
| Serravallian | Spain (Soria) | M. crusafonti, M. minor (40755) | |
| MN 6 - MN 7 + 8 | Switzerland (Thurgau) | M. germanicus (46278) M. minor (46274) | |
| MN 6 - MN 7 + 8 | Switzerland (Zürich) | M. minor, Megacricetodon indet. (46275) M. sp. (46259 46261) | |
| MN 6 - MN 7 + 8 | Hungary (Nograd) | M. sp. (167497) | |
| Tunggurian | China (Gansu) | M. sinensis (235577) | |
| MN 7 + 8 | Germany (Baden-Württemberg) | M. gregarius (34534) M. gregarius, M. minor (49520) | |
| MN 7 + 8 | Spain (Cataluña) | M. minor (92640) | |
| MN 7 + 8 | Portugal (Setúbal) | M. minor, M. ibericus (65952) | |
| MN 7 + 8 | Romania (Bihor) | M. germanicus (200051) | |
| MN 7 + 8 | Germany (Bayern) | M. minor (49516) M. minor, M. similis (49514) | |
| MN 7 + 8 | Switzerland (Thurgau) | M. gregarius, M. minor (53571) M. gregarius, M. minor, M. germanicus (46277) M. minor, M. germanicus, M. similis (46276) | |
| MN 7 + 8 | Switzerland (Sankt Gallen) | M. similis (46288) M. sp. (46263) | |
| MN 7 + 8 | Spain | M. crusafonti, M. minor (70806) M. minor, M. ibericus (78058) | |
| MN 7 + 8 | Switzerland (Baselland) | M. minor, M. similis, M. schaubi, M. gregarius (49421) | |
| MN 7 + 8 | Switzerland (Neuchâtel) | M. gregarius, M. minor, M. similis (49576) | |
| Vallesian | Spain (Zaragoza) | M. debruijni (35877 35880 35882) M. debruijni, M. gregarius, M. similis (35876) | |
| Vallesian | Spain (Segovia) | M. sp. (40766) | |
| Tortonian | Germany (Bavaria) | M. debruijni (34256) M. minutus (206345) | |
| Tortonian | Germany (Bayern) | Democricetodon gregarius (48321 48322 48323) M. germanicus (48476) | |
| Vallesian - Turolian | Italy (Foggia) | M. sp. (32942) | |
| MN 9 | Spain | M. freudenthali (78751) | |
| MN 9 | Türkiye | M. yenicekentensis (176197 176198) |