RS rIsxrnto. 12. Transverse sections through Lcxtogl/tyxisrueta/xrrxrtr Section 4 8 is eliluxgcd m order to shorn I he Shlape Ot' the juvenge hinge plateS euclOSod Within the Cardinal prOCRss Rnd the'boundary betlveen punctate tissue (stlppledi and impunctati, lamtuated tissue sectxon 6 2 is enlarged in order to show thc pxrluary hinge plates (Stippled'>. The CXural bRSCS, unuaually large for Lox/n/irhsv/X, Rre Well SbOWn.iu SeCtiORS 6,4-7,6, Section 9,6 show8 thc xnaxtrnum, dcveloplncnt of thc crural pxocxases. S.336/1, Gcntd Cog Hauterivlan, T'1st Oualioum. A-scale for sections 4.g arid 5.2 8 — sade for the remaining sections.

Mtt~frLgMiggl CtxgTAx=hXXUS Tgngtttt4TULtDAg

lt ls dtsl)xtguishcd fxoxn OOMr species ol Lorip/it&prix cspxlallp by thc ttnusually lax'gc size ctl the crural bases attach@1 to thc tnrtcx edges of thc hkttgc plates (text-ftg. 12}, but also by tts extcxnai RPPMIraACC. L)/rex/buxirrrt. Hautcxivian Rttd Barxcmiuxl of south-vvcst Morocco. LOX/O//1/1 uris nrnros'Crt sfs SP. GOV

Plate 66. tigs. 1, 2; text-fig, 13 Types. Holctype, c~nt2 collection specimen uo. 8.547/2 Rge given as Upper Hauteriviau (locality unknown), Dimcnsionsl l. 49 75, W 32, T 26.25. Paratypc. Gctltil Cogcction specimen uo. S.547, 1, Murrrkr/. Sixteen specimens in thc- Gentg 1 ogcctioul four from thc Bantering ian (iucludiug Oucd Tidz(), two from the Barremian, Chaiue d'Azour, t'eu from the 8urremian Of Oued Aghbalou Oislgrlosix. 8ongatc Lor/olir/lyric, attaining large size; P/A rndo Slightly more than 1. Valves equRHly convex. Untbo erect. Foramen mcsothyxid, labiatc. Beak ridges rounded. Syrnphytium bidden m adult stage. ILRtcral cornlnissurC vcr V strnrl gly arched. Antcxiorcouunxssuxe snlctplleate Withshldlow Median Sln'us, rare'ly cpisulcale. Sheg loMed ordy at extreme anterior, marked by strong concentric growth ridges Small pcdide collar present, xsxr+so. 13, Trarlsvexsc sections through.l.llrio/ir/xyr/8 rrurrorsaxriz Sections 5,6 and 6.0 arc enlarged in order to

ow tbe detailed structure of thc cal'dinal process. with juvenTC primary hmge plates (hne stipple) surrounded by Jarrunatcd 'thickening and the body of thc cardinal proem@ infgled with punctate skellctal tissue (coarse stipple 1. Seclic n 64 is enlarged to show the primary hinge plates (stippled). Maximutn development of thc crural processes is scen lrl ScclIIOR 11.2. biotc thc height of tbe transverse band Shove the ik1of Of llxc vsl'vc lln Scetton ll4.4. S.$47/1, (icnttl Coll., Hauterlvian, tocRNty unknown, A--scale lor sections 5.6. 6.0'. Rnd 6.4. 8--scale fior

thc fclnRlrllflg secnous. Hinge plates trdtially coucavei. becorn1ng rounded L shape<i, piped, cardinal process extends R]ong thc hinge phtes, leaving small dorsa1 umbonat CRVity, Tran~verse hand high-archcdl Vdlh somewhat pninted crest, high above 13oor of vsive.