Rhinolophus dehmi ZIEGLER , 1993

Rosina, Valentina V. & Rummel, Michael, 2019, The Early Miocene Bats (Chiroptera, Mammalia) From The Karstic Sites Of Erkertshofen And Petersbuch 2 (Southern Germany), Fossil Imprint 75 (3 - 4), pp. 412-437 : 418-420

Rhinolophus dehmi ZIEGLER, 1993

Text-fig. 2f, i, k–m

M a t e r i a l. Erkertshofen 1: BSP 1962 XIX 4151, left C inf.; BSP 1962 XIX 4154, right mnd with p4; BSP 1962 XIX 4157, right m1; BSP 1962 XIX 4159, left m2; BSP 1962 XIX 4150, left C inf.; BSP 1962 XIX 4151, left C inf.; BSP 1962 XIX 4161, right C sup.; BSP 1962 XIX 4162, left C sup.; BSP 1962 XIX 4163, left C sup.; BSP 1962 XIX 4164, right P4; BSP 1962 XIX 4165, right P4; BSP 1962 XIX 4168, left M1; BSP 1962 XIX 4169, left M1 (damaged); BSP 1962 XIX 4170, right M1 (damaged).

Erkertshofen 2: BSP 1974 XIV 1109, 1097, 1098, 1100– 1108, 1110–1112, 1146, 1188 (16 isolated lower teeth); BSP 1974 XIV 1113, right mnd with m3; BSP 1974 XIV 1122– 1124, 1126–1136, 1115–1121 (21 isolated upper teeth); BSP 1974 XIV 1125, right mxl with M1.

Petersbuch 2: BSP 1976 XXII 5504–5507, 5518, 5547, 5549–5552, PCMRCh37–39, 51b,

54a–i, 57e, 86f, 89 (26 mandibles with teeth); BSP 1976 XXII 11067a–f, 11068a–m, 11070, PCMRCh24–26, PCMRCh50a–g, 51a, 52a–d, 53, 55a–e, 56a–f, 57a–b, 57d, 57f–h, 86a–e (58 isolated lower teeth); BSP 1976 XXII 5519, 5541, 5542, PCMRCh32–34, 46a–c (9 maxillary fragments with teeth); BSP 1976 XXII 5544a–i, 5545a–d, PCMRCh28, 73, 35–36, 40a–r, 41a–w, 44a–l, 45a–q, 46d–l, 47a–g, 71–76 (105 isolated upper teeth).

M e a s u r e m e n t s. See Tab. 4.

D e s c r i p t i o n. The shape of the fossil jaw fragments are typical for the Rhinolophus . The preserved remains morphologically correspond to R. dehmi described in detail earlier (see Rosina and Rummel 2012: 468, Ziegler 1993: 136–140). The upper canine is semilunar in occlusal view with a flat lingual surface and a well-developed cingulum ( Text-fig. 2k ). The P4 has a marked talon which protrudes posterolingually. The M1 differs from M2 by having a shorter preparacrista and a more developed talon on the posterolingual side of the crown. The lower canine is crescentshaped in occlusal view and surrounded by a well-developed cingulum which forms a small anterolingual broadening and a distinct distolingual cuspule ( Text-fig. 2m ). According to the alveoli, the p2 was large with a single root and the p3 was displaced buccally from the midline of the toothrow ( Text-fig. 2i, l ). The m3 talonid is only slightly smaller than the trigonid ( Text-fig. 2l ). This Rhinolophus species from Petersbuch 2, Erkertshofen 1 and Erkertshofen 2 is considerably smaller than both the R. cf. delphinensis and R. aff. lemanensis from the same sites ( Tabs 3, 4).At the same time, it is significantly larger than R. grivensis ( Tab. 4), but compares well in morphology with R. dehmi from the type locality Wintershof-West ( Ziegler 1993) and was related to this species.

Figures

Text-fig. 2. a–e – Rhinolophus aff. lemanensis: a – PCMRCh65, left mxl with P4–M3, Petersbuch 2, ventral view; b – PCMRCh79 right mnd with C inf., Petersbuch 2, lingual view; c – PCMRCh66, right C sup., Petersbuch 2, lingual view; d – BSP 1976 XXII 5515, left mnd with m2–3, Petersbuch 2, occlusal view; e – BSP 1974 XIV 1139, left mnd with p4–m1; Erkertshofen 2, occlusal view; f, i, k–m – R. dehmi: f – BSP 1974 XIV 1118, right C sup., Erkertshofen 2, lingual view; i – BSP 1976 XXII 5507, left mnd with p4–m1, Petersbuch 2, occlusal view; k – PCMRCh32, right mxl with C sup., P4–M1, Petersbuch 2, ventral view; l – PCMRCh37, left mnd with m1–2, Petersbuch 2, occlusal view; m – PCMRCh89, right mnd with C inf., Petersbuch 2, lateral view; g–h – R. cf. delphinensis: g – BSP 1976 XXII 5522, right mxl with P4, Petersbuch 2, ventral view; h – BSP 1962 XIX 4153, left mnd with m1–3, Erkertshofen 1, occlusal view; j, n, o – R. grivensis: j – PCMRCh43, left C sup., Petersbuch 2, lingual view; n – BSP 1976 XXII 5543, left mxl, Petersbuch 2, ventral view; o – BSP 1976 XXII 5548, left mnd with m2–3, Petersbuch 2, occlusal view.