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Novi Najdbi Pol'a Rodu Velates Iz Eocenskega Fli{A Gori{Kih Brd in Gra

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Novi Najdbi Pol'a Rodu Velates Iz Eocenskega Fli{A Gori{Kih Brd in Gra GEOLOGIJA 49/1, 53–60, Ljubljana 2006 doi:10.5474/geologija.2006.003 Novi najdbi pol‘a rodu Velates iz eocenskega fli{a Gori{kih brd in Gra~i{}a v Istri The new findings of Velates snail from Eocene flysch in Gori{ka brda and Gra~i{}e in Istria Vasja MIKU@ Oddelek za geologijo, Naravoslovnotehni{ka fakulteta, Univerza v Ljubljani, Privoz 11, 1000 Ljubljana, Slovenija [email protected] Klju~ne besede: pol‘i, Velates, eocen, fli{, Slovenija in Hrva{ka Key words: snails, Velates, Eocene, flysch, Slovenia and Croatia Kratka vsebina Obravnavana sta dva primerka eocenskih pol‘ev vrste Velates perversus (Gmelin, 1791). Prvi je najden v spodnjeeocenskih fli{nih plasteh v najdi{~u Vipol‘e v Gori{kih brdih, drugi v srednjeeocenskih fli{nih skladih pod zaselkom Gra~i{}e pri Pazinu v Istri. Abstract Two specimens of Eocene snails of the species Velates perversus (Gmelin, 1791) are considered. The first was found in Lower Eocene flysch beds at the Vipol‘e locality in Gori{ka brda, and the second one in Middle Eocene flysch beds below the settlement Gra~i{}e near Pazin in Istria (Croatia). Uvod Ve~ kot tri desetletja pa obiskujemo in pregledujemo tudi nekatera nahajali{~a V Sloveniji so ‘e bili najdeni primerki ve- eocenske makrofavne v Istri, ki so v sever- latesov v eocenskem fli{u Vipavske doline in nem in osrednjem fli{nem delu Istre precej Gori{kih brd. Raziskovala sta jih M iku‘ & pogostna. V letu 2005 je Vili Rakovc v Gra- Pavlovec (2002) in ugotovila, da vsi najde- ~i{}u pri Pazinu na{el kameno jedro velate- ni primerki pripadajo le eni vrsti Velates per- sa, ki ga doslej iz tega najdi{~a nismo pozna- versus, ki pa je bila v paleogenskem morju li, ~eprav so tam ‘e bila najdena zelo {tevilna zelo raz{irjena, saj so jo na{li v Evropi, Afriki kamena jedra najrazli~nej{ih pol‘ev in in Indiji. Pred kratkim, v letu 2004 je v najdi- {koljk. Kamena jedra mehku‘cev v omenje- {~u Vipol‘e-2 ljubitelj in zbiralec fosilov in nem nahajali{~u so obi~ajno v slabem sta- mineralov iz Ajdov{~ine Stanislav Ba~ar na- nju, so precej korodirana in ve~inoma raz- {el dosedaj najve~jega velatesa pri nas. lomljena. 54 Vasja Miku` Paleontolo{ki del 1959 Velates schmidelianus (Chemnitz) – Pavlo- v e c , 373 Sistematika po: Golikov & Starobogatov, 1960 Velates schmideli (Chemn.) – Vadász, 591, tábl. 36, fig. 9-10 1975 in Wenz, 1938 1960 Velates schmiedeli (Chemnitz) – H. & G. Termier, 365, fig. 2667 a Classis Gastropoda Cuvier, 1797 1960 Velates perversus (Gmelin) – H. & G. Ter- Subclassis Pectnibranchia Blainville, 1814 m i e r , 365, fig. 2667 b Superordo Neritimorpha Golikov & 1964 Velates perversus (Gmelin, 1791) – K arag- Starobogatov, 1975 juleva, 132, Tabl. 40, figs. 3a, 3b, 10 Ordo Planilabiata Stoliczka, 1868 1966 Velates schmidelianus (Chemnitz) 1785 – Superfamilia Neritoidea Rafinesque, 1815 Strausz, 17, Tábl. 4, figs. 1, 4; Tábl. 23, Familia Neritidae Rafinesque, 1815 figs. 6-9; Tábl. 24, fig. 1 1972 Velates schmidelianus (Chemnitz), 1786 – Genus Velates Montfort, 1810 Kecskemétiné-Körmendy, 220, Tábl. 5, fig. 7; Tábl. 6, figs. 1-2 Velates perversus (Gmelin, 1791) 1995 Velates perversus Gmelin, 1791 – Le R e - Tab. 1, sl. 1a-1b; tab. 2, sl. 1; tab. 3, sl. nard & Pacaud, 90 1a-1c 2002 Velates perversus (Gmelin, 1791) – M i k u ‘ & Pavlovec, 95, Tab. 1, sl. 1-4; tab. 2, sl. 1823 Nerita conoidea Brongniart – Brongniart, 1-4; tab. 3, sl. 1-3 Pl. 2, Fig. 22 2003 Velates perversus (Gmelin, 1791) – Klepa~, 1824 Neritina conoidea Deshayes – Deshayes, 272-273, Fig. 32 A-B T. 2, 149, Pl. 18, Figs. 1-8 1894 Velates Schmideliana Chemn. – De G r e g o - Material: Primerek iz Gori{kih brd {t. 6536 r i o , Pl. 6, fig. 181 iz zbirke Stanislava Ba~arja, kameno jedro iz 1895 Velates Schmidelianus Chemn. – Z ittel, olistostrome pri Gra~i{}u v Istri, primerek je 331, Fig. 805 shranjen v zbirki Vilija Rakovca. 1897 Velates Balkanicus n. sp. – Bontscheff, Nahajali{~i: Spodnjeeocenski skladi pri 380, Taf. 6, Figs. 1-6 Vipol‘ah v Gori{kih brdih in srednjeeocen- 1907-13 Velates Schmiedeli (Chemn.) – Coss- ske fli{ne plasti pod zaselkom Gra~i{}e pri mann & Pissarro, Pl. 6, fig. 40-1 Pazinu v Istri. 1911 Velates schmiedelianus Chemnitz sp. – B o - Opis primerka iz najdi{~a Vipol‘e -2: ussac, 269 Ohranjeni sta dobri dve tretjini primerka, 1938 Velates perversus (Gmelin) – Wenz, 417, Abb. 1016 zunanja ustna je odlomljena. Kameno jedro je nizko sto‘~asto, s {iroko bazo in asime- 1947 Velates Schmiedeli Chemnitz – Furon & Soyer, 230, Pl. 6, fig. 40-1 tri~no postavljenim vrhom blizu roba hi{ice. Na nekaterih mestih so ohranjeni tudi posa- 1954 Velates schmidelianus Chemn. – Malaro- d a , 37, Tav. 2, Figs. 1a-1c; Tav. 10, Figs. mezni deli stene hi{ice. 14a-14b Opis kamenega jedra iz Gra~i{}a: Kame- 1955 Velates perversus (Gmelin) – Shimer & no jedro je ohranjeno v celoti, njegova obli- Shrock, 479-480, Pl. 197, Figs. 35-37 ka je tipi~na za velatese, predvsem spodnja 1958 Velates Schmidelianus Chemnitz – Tem- bazalna stran s polmese~asto oblikovanim kova, 113, Tab. 8, sl. 2 predelom nekdanjega ustja in z zna~ilno na- Tabla 1 – Plate 1 1a Velates perversus (Gmelin, 1791), zgornja stran, primerek 6536, Vipol‘e-2, zbirka S. Ba~arja, x 0,9 Velates perversus (Gmelin, 1791), apical side, specimen 6536, Vipol‘e-2, collection of S. Ba~ar, x 0,9 1b Isti primerek s strani, x 1 The same specimen from lateral side, x 1 Novi najdbi pol‘a rodu Velates iz eocenskega fli{a Gori{kih brd in Gra~i{}a v Istri 55 56 Vasja Miku` zob~anim notranjim delom ustne odprtine skemétiné-Körmendy (1972) je vrsta oziroma notranjo ustno. zelo raz{irjena, najdena je v srednje in zgor- njeeocenskih skladih Mad‘arske in v prete‘- Dimenzije v m (Dimensions in mm): no srednjeeocenskih skladih Francije, Belgi- Primerki {irina 1 {irina 2 vi{ina je, Nem~ije, Italije, [vice, Bolgarije, Specimens Width 1 Width 2 Height nekdanje Jugoslavije in Romunije. Piccoli Vipol‘e-2 (Tab. 1, 2) 80 111 60 (1984) in Piccoli et al. (1986) pi{ejo, da je Gra~i{}e (Istra) (Tab. 3) 80 84 55 vrsta Velates perversus ugotovljena v paleo- Tabela 1. Primerjava velikosti (v mm) velatesov censkih skladih Indije in Pakistana, v spod- iz Slovenije s primerki iz Hrva{ke (Drni{, Bribir, otok Krk), Bosne in Hercegovine njeeocenskih Italije (Veneto), Somalije, In- (Mostar, Soba~; Posu{je), Mad‘arske (Dudar), dije in Pakistana, srednjeeocenskih Pari{ke Bolgarije, Francije in Italije. kotline, Italije, Somalije, Indije, Pakistana, Table 1. Comparison of dimensions (in mm) of Burme in Jave, zgornjeeocenskih Pari{ke ko- Velates from Slovenia with specimens from tline, Italije, Somalije, Burme in Jave ter v Croatia (Drni{, Bribir, island Krk), Bosnia and Herzegovina (Mostar, Soba~, Posu{je), Hungary spodnjeoligocenskih Italije. Pinna (1989, (Dudar), Bulgaria, France and Italy. 262) jo omenja iz eocenskih plasti najdi{~a Roncá, v pokrajini Veneto v Italiji. Sokli} Primerki {irina 1 {irina 2 vi{ina (2001, 199) navaja velatese iz srednjeeocen- Specimens Width 1 Width 2 Height skih skladov Bosne in Hercegovine v najdi- Slovenija (Slovenia) 33-80 38-111 20-60 {~ih na Majevici, Konjovac, Tribistovo, Za- Hrva{ka (Croatia) 18-59 24-77 13-47 BiH (Bosnia and Herzeg.) 34-60 44-57 25-35 humlje in Lukavac ter iz priabonijskih plasti Mad‘arska (Hungary) 39-115 45-170 22-70 najdi{~ Nugla, Vinjani in Zagorje. Po podat- Bolgarija (Bulgaria) 22-44 26-54 15-28 kih Klepa~eve (2003, 272), so velatese na- Francija (France) 30-72 38-92 - {li tudi v lutecijskih plasteh najdi{~a Ju- Italija (Italy) 28-123 33-125 17-79 randvor na otoku Krku. Stratigrafska in geografska raz{irjenost: Po podatkih Oppenheima (1896-97) je bi- Zaklju~ki la opisana vrsta najdena v eocenskih skladih Italije, Francije, Nem~ije, Hrva{ke (Kosa- Prvi primerek (tab. 1 in 2) vrste Velates vin), Mad‘arske, Indije in Egipta. Boussac perversus (Gmelin, 1791) je najden v spod- (1911) pi{e, da je vrsta najdena v srednje- njeeocenskem fli{u najdi{~a Vipol‘e-2 v Go- eocenskih (lutecijskih) plasteh Pari{ke ko- ri{kih brdih, drugi pa v srednjeeocenskem tline v Franciji, Egiptu, Indiji in Italiji. Iz fli{u pod zaselkom Gra~i{}e v Istri. {tevilnih italijanskih najdi{~ in Bribirja, Opisana fosilna ostanka predstavljamo Ostrovice ter Zazvi~a na Hrva{kem jo nava- zato, ker je primerek iz Gori{kih brd zaen- ja Dainelli (1904; 1905; 1915). Wenz krat najve~ji pri nas najden velates. Prime- (1938) vrsto Velates perversus (Gmelin) ome- rek iz Gra~i{}a pri Pazinu v Istri pa je zani- nja iz spodnjega eocena Francije, iz najdi{~ miv predvsem zato, ker doslej tam {e ni bil Ypres, Sables de Cuise in Saint Gobain. M a - najden in ker je njegovo kameno jedro zelo laroda (1954) pi{e, da so velatese na{li v dobro ohranjeno, kar ni zna~ilno za kamena eocenskih (lutecijskih), priabonijskih in ru- jedra ostalih mehku‘cev v omenjenem naj- pelijskih skladih Italije. Iz priabonijskih pla- di{~u. sti najdi{~a Drago‘el in Ov~jega polja v Ma- kedoniji jo opisuje Temkova (1958). The new findings of Velates Pavlovec (1959, 374) navaja, da so pri- snail from Eocene flysch in merke na{li tudi v lutecijskih in prominskih skladih na Velem To~ku, v Istri in Hercego- Gori{ka brda and Gra~i{}e in vini. Strausz (1966, 145) v svoji tabeli na- Istria vaja, da so primerki opisane vrste zelo raz- {irjeni v eocenskih skladih Mad‘arske Conclusions (Dudar, Gánt).
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