Szabó János szerk.: Fragmenta Mineralogica Et Palaentologica 20. 2002. (Budapest, 2002)

Family Gliridae THOMAS, 1897 Subfamily Glirinae THOMAS, 1897 (The measurements and the morphological nomenclature is after DAAMS 1981. Genus Muscardinus KAUP, 1829 Muscardinus sansaniensis (LARTET, 1851) (Figure 4: 3-4) Material and measurements L w L w 1 1 mi — (Figure 4: 3) 1.08 mm 0.98 mm 1 M

3 - (Figure 4: 4) 0.95 mm 1.26 mm | mt — The crown of the molar is very low and flat bearing 6 main transversal ridges. There is a remnant ridge cut up into two pieces between the 3

rd and 4

th main ridges. A strongly reduced lingual remnant ridge is found between the 4

th and 5

th main ridges. This morphological pattern is very close to M. sansaniensis from Neudorf (SCHAUB & ZAPFE 1953) but simpler than M. cf. sansaniensis from Puttenhausen (WU 1990) and more complex than M. aff. sansaniensis from Anwil (ENGESSER 1972). M

3 — The flat and low crown has 5 main transversal ridges with 2 lingual and 6 buccal remnant ridges. Subfamily Dryomyinae DE BRUIJN, 1967 Genus Microdyromys DE BRUIJN, 1966 Microdyromys complicatus DE BRUIJN, 1966 (Figure 4: 2) 1 M": L: 1.15 mm, W: 1.02 mm Material and measurements — The outline of the concave occlusal surface is rectangular. The molar has three roots: one larger lingual and two smaller buccal. On the lingual margin of the occlusal surface a longitudinal ridge is found: the endoloph. Among the transversal ridges the anteroloph, the protoloph, the metaloph and the posteroloph are lingually connected to the endoloph. The short extra ridge between the anteroloph and the protoloph, the longer anterior centroloph, the sorter posterior centroloph and the short anterior extra ridge are not connected to the endoloph.Buccal connections of the ridges are not found. The only molar is unsuitable for any detailed systematic conclusion. The Microdyromys genus is frequent in the Western and the Central European Early and Middle Miocene faunas (DAAMS 1981, 1999). In Hungary the occurences are only Hasznos (KORDOS 1981), Sámsonháza and Felsőtárkány (HÍR et al. 2001). In the preliminary report (FIiR et al. 1998) the find was wrongly identified as M. koenigswaldi. 8 9 10 11 Figure 4—1: occlusal surface of Spermophilinus bredai ra.i; 2: occlusal surface of Microdyromys complicatus M

1

"

2

; 3: occlusal surface of Muscardinus sansaniensis mi; 4: occlusal surface of Muscardinus sansaniensis M

3

; 5-7: occlusal surfaces of Miodyromys sp. P

4 molars; 8-9: (reversed) occlusal surfaces of Miodyromys sp.d4 molars; 10-(reversed)-ll-12 (reversed): occlusal surfaces of Miodyromys sp. P

4 molars; 13(reversed)-14-15: occlusal surfaces of Miodyromys aegercii M

1

"

2 molars. Subfamily Myomiminae DAAMS, 1981 Genus Miodyromys KRETZOI, 1943 Miodyromys complex The individual measurements (in mm) and the most important morphological characters are given in the enclosed Tables 1-9. In the material of Sámsonháza two Miodyromys taxa were found: Miodyromys aegercii (BAUDELOT 1972) and Miodyromys aff. aegercii, but the correct separation of them is possible only in the case of the M

1

"

2 molars (Figures 4-6). Other molars are possible to determine as Miodyromys sp. It is a really grotesque systematical situation, but the author couldn't shoulder a general systematical re-grouping. The real solution could be based on a wide-ranging revision. Miodyromys sp. P

4 (Figure 4: 5-7, Table 1) — The outline of the occlusal surface is oval. The main ridges are the anteroloph,