Boletín de la Sociedad Geológica Mexicana ISSN: 1405-3322 Sociedad Geológica Mexicana, A.C.

Ifrim, Christina Schlueterella stinnesbecki n. sp. (Ammonoidea, Diplomoceratidae) from the Turonian-Coniacian of northeastern Mexico Boletín de la Sociedad Geológica Mexicana, vol. 71, no. 3, 2019, September-December, pp. 841-849 Sociedad Geológica Mexicana, A.C.

DOI: https://doi.org/10.18268/BSGM2019v71n3a13

Available in: https://www.redalyc.org/articulo.oa?id=94366148013

How to cite Complete issue Scientific Information System Redalyc More information about this article Network of Scientific Journals from Latin America and the Caribbean, Spain and Journal's webpage in redalyc.org Portugal Project academic non-profit, developed under the open access initiative http://dx.doi.org/10.18268/BSGM2019v71n3a13 P. 841‒849 VOL. 71NO. 3 BOL. SOC.GEOL.MEX.2019 Heidelberg, Germany. Heidelberg, ImNeuenheimer Feld 234, 69120 Institut für Geowissenschaften, Universität [email protected] Christina Ifrim Christina from theTuronian–ConiacianofnortheasternMexico Schlueterella stinnesbecki Short note Manuscript July accepted: 10, 2018. Corrected manuscript received: July 1,2018. Manuscript received: 6,2018. April Ifrim endemic. Turonian, Coniacian, Mexico, Keywords: Ammonoid, Cretaceous, tion away from initsevolugenus andabasalform the is the oldest definite record of late Turonian–early Coniacian.This have inthe been anendemicform Schlueterella stinnesbecki Coahuila, Mexico.in northern were ammonoid collected morph thishetero Twenty specimensof Wiedmann,here 1962is described. the genus A newspecies of ABSTRACT n.sp.(Ammonoidea,Diplomoceratidae) Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín Neocrioceras. n.sp. seemsto Schlueterella - -

México. Parece que fueron colectados el nortedeCoahuila, en ejemplares deesteammonoideo heteromorfo Schlueterella especie del géneroSe describe una nueva RESUMEN México, endémico. Cretácico clave:Palabras Ammonoideo, desde en suevolución básica antiguo de este género y una forma Con total certeza setrata más del registro Turoniano tardío–Coniaciano temprano. becki n.sp. fueunaespecie endémica enel , Wiedmann, 1962. Los veinte Wiedmann,1962. Los veinte Turoniano, Coniaciano, Schlueterella stinnes Neocrioceras. /2019 841 -

Schlueterella stinnesbecki n. sp. from Mexico ABSTRACT INTRODUCTION / SYSTEMATIC Schlueterella stinnesbecki n. sp. from Mexico PALEONTOLOGY 842 2. SystematicPaleontology 1. Introduction 2 and 2018.They originated from two in quarries Mexico inthe yearsin northeastern 2002–2006 described here specimens wereThe discovered debatable. are still which of affinities the genus, Schlueterella . 0) Te eu i caatrzd y n open an by characterized is genus The 205). p. 1872 byoriginal designa Type species. vious whorl, U:umbilicus. height, WI: Distancebetween whorl at Dandpre Further abbreviations are D: diameter, WH: whorl tion see Nyborg correla its and section Carranza the For (2014). al. Saltillo, Coahuila. For Desierto), lithostratigraphy see Stinnesbeck del (Museo Museum Desert the in housed CPC), Paleontología, de (Colección Repository isthe Paleontological Collection and spinesfollows Ifrim below.discussed Terminologyfor tubercles, nodes, except forand genus the subfamily for reasons Higher systematics followsWright erella stinnesbecki Zone (Ifrim lower Coniacian the shorter and comprisesonlythe middle part of much is 1) (CA, Figure section 102°27.193ʹW, 29°10.775ʹN, Carranza the whereas 2014), al., inconstans loides scupini the Turonian–Coniacianfrom boundary the comprises 1) 102°24.222ʹW,Figure 28°52.586ʹN, northwest Rosario Coahuila. The section(R, Múzquiz, the municipality of area of the quarry / Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín (2005). For the Rosario section see Ifrim see section Rosario the For (2005). Suborder Ancyloceratina Wiedmann, 1966 Subfamily Diplomoceratinae Spath, 1926 Family Diplomoceratidae Spath, 1926 Superfamily Turrilitoidea Gill,1871 Genus Zone(Stinnesbeck Wiedmann, 1962isalittle known Zoneto the upper et al. Schlueterella n. sp. isacommonspecies. Ancyloceras pseudoarmatum et al. , 2011). In both quarries, both In 2011). , Cremnoceramus crassus inconstans (2014) and Ifrim et al. ino Wiedmann (1962, tion of Wiedmann, 1962 (2018). et al. Cremnoceramus crassus , 2005;Ifrimet et al. et al. Schlüter, (1996) (2011). Schluet Myti et al. et - - - - /2019

Carranza quarries(above). and zoom onnorthern Coahuila withlocationof theRosarioand Figure 1 50 km

nodes, on venter. the latter opposite or alternating lateral tubercles andventrolateral tubercles or dense straight to prorsiradiate ribs, somewith less crioconicwithcircular to depressed section, nile whorls are moderately helicoid, later more or In species (1925). Diener by this given was of description emended An 1976). Jimbo, 1894(= ajuvenile whorl of of basis Neocrioceras 1) figure 8, (pl. 1894, species of of Originally, notallribsbeartubercles. on theprimaries, if coil, tubercles from simpleordouble ribs always nta fsimpleribbing. instead of havingand in ribs alternating more complex of from According to Wiedmann (1962),

N SCNP MapofMexicowiththestate Coahuilaingray(below), Neocrioceras 102°W Neocrioceras CARRANZA ROSARIO Cienegas Cuatro a eetd y pt (91 o the on (1921) Spath by erected was Neocrioceras Schlueterella Monclova y idan 16) Te type The (1962). Wiedmann by Schlueterella compressa sensu in havingin instead corresponding 101°W is wasintroduced as subgenus sensu Crioceras spinigerum Rosario Diener, 1925, (p. 192). (p.Diener, 1925, Vallecillo Negras Piedras 100°W Crioceras spinigerum Crioceras spinigerum Schlueterella Neocrioceras Linares Laredo Klinger, Jimbo, differs , juve 27°N 28°N 29°N - Diplomoceratinae. Neocrioceras here to is furtherhave interpreted evolved from mesberger a view followed by Klinger raised (1984) Miyauchi shafts asinthe straighter coiling, butstraight lacking portions of addition, they have a crioconic shell, but with small of definition described here specimens The match the original Pseudoxybeloceras specimens withstraight shafts inthe genus eras here tohaveinterpreted is evolved from that matches complete thatspecimens show acoilingpattern more here based on the overall of morphology under the genus Wright > 90 mmmore stout and regular with a WH/D 0.13to 0.25, at D are delicate with a WH/D of whorls Juvenile 3.5). Figure (e.g., crioconic adult 2), (Figure irregular slightly and helicoid erately Description. Mexico. pioneer projects innortheastern ing aseriesof logical work inLatin America since1990,includ Wolfgang Stinnesbeckfor extensive his paleonto Etymology. size dimorphism. around 100mm,indicative of either is ataround D nile toadult ornament 50 or four inthe adult stage. transition from The juve the juvenilerib in parallel secondary stage and to out looping, intercalated regularly byone simple, tubercles andventrolateral with nodes orspines ribs per whorlsimple primary bearing lateral erately helicoid shellwithupto 38 rursiradiate, Diagnosis. 2007 ? 2005 ? . It may be justified to place some fragmented some place to justified be may It . Figure 2.1–2.12,Figure 3.1–3.5,Figure 4 Neocrioceras Neocrioceras et al. and thus included into the subfamily et al Schlueterella stinnesbecki (1996) placed the subgenus Crioconic,inthe juvenile stage mod Ti pce snmdi oo fnamed inhonorof species is This Schlueterella Neocrioceras Juvenile shell is crioconicto mod . (2017), among others. This genus This others. among (2017), . . Polyptochoceratinae Pseudoxybeloceras sp.; Ifrim sp.; Stinnesbeck of Wiedmann (1962). In (1962). Wiedmann of Schlueterella , andbecause et al. et al ., fig. 6d . Matsumoto and , aviewrejected (2007) and Sum and (2007) n. sp. togenuslevel, et al., Schlueterella Schlueterella fig. 8f Neocrioc Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín ------

number increasing withgrowth. They parallel the secondaries at Dbetween 50 and100mm,their intercalated.number increases This to2–4simple nile stage, and one to two simple secondaries are nodes or spines. ribsare Primary closer inthe juve They wear tubercles on midflank and ventrolateral arch to become rursiradiate towards the venter. wide a in umbilicolaterally back flex and dorsum whorl whichare straight to prorsiradiate near the ribsper up to 38 primary consists of Ornament small Dto0.53–0.63at D>90mm. 90 mm.U/Ddecreases slightly from 0.58–0.73at nile whorl anddecreases to0.060.16at> D variation inWI/Dbetween 0.09 and0.21injuve causes coiling Irregular 4). (Figure 0.30 to 0.25 of apna fSpain differsCampanian from of upper the from(Schlüter, species type This 1872). belong to the group around tubercles.described here specimens The clearly tuberclesbears on simple primaries, or all ribs bear group around tubercles double onprimary ribs, whereas the of Sch. pseudoarmatum two groups within Discussion. Ifrim (compare Ifrim quarry Carranza the the Rosario andbedsCA1to CA6 of quarry of members Yellow and Gray the of R24–R42 ( Coniacian lower to Zone) Turonianfrom the uppermost ( known from northwest Coahuila. It was recorded Occurrence. Dimensions. Yellow quarry. MemberintheCarranza the Yellow the RosarioMember of quarry, and the inconstans dorfensis Turonianthe uppermost ( CPC–914 to –927 andCPC–989 from the from the Rosario quarry.of Paratypes are CPC–853, YellowMember the in bed unknown an from 8f) Stinnesbeck in figured also Types. primaries. Suture notpreserved. et al

The holotypeCPC–990is (Figure The 3.5, W. Zone), i.e., the upper Gray Member and ., 2014for correlation). oe t lwr oica ( Coniacian lower to Zone) idan 16) differentiated (1962) Wiedmann

Schlueterella stinnesbecki See Sch. kossmati (Schlüter,rowsfour bears 1872)

Schlueterella Table 1. inconstans Cremnoceramus walters Smoec, 1899) (Simionescu, . The group around. The et al., Sch Sch et al. /2019 . 2005,Figure sp. nov. isonly . pseudoarmatum waltersdorfensis oe, beds Zone), stinnesbecki , 2011,with C. crassus 843 3 n. - - -

Schlueterella stinnesbecki n. sp. from Mexico SYSTEMATIC PALEONTOLOGY Schlueterella stinnesbecki n. sp. from Mexico SYSTEMATIC PALEONTOLOGY 844 CPC–920, CA,Yellow Member; 9:CPC–921;10:CPC–922, 11:CPC–923,12:CPC–924, 9–12:R,Yellow Member. Scale: 50 mm. 8: R40-42; CPC–919, 7: Member; Yellow CA, CPC–918, 6: CA4-5; CPC–917, 5: R40-42; CPC–916, 4: R39-41; CPC–915, 3: R40-42; CPC–914, 2: Figure 2 4 olgo,16 rmtelwrCmaino Collignon, 1969 from the lower Campanian of mm. 18 around WH at ribs finer Madagascar Campanian differs inof having much Sch. tenuiannulatum 245mm. shaft at aWHof sp. byand byall ribs bearing on nodes a straight rial presented here. 13 mm and also has much finer ribs than the mate a straight has shaft at is Madagascar WHaround /

Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín Schlueterella

stinnesbecki Collignon, 1969 from the lower sp.nov. from Rosario(R)and Carranza (CA)innorthern Coahuila.1:CPC–853,R,YellowMember; Sch. denseornatum - /2019

western Europe,western Wyoming, andJapan California, South Africa, Madagascar, central and panian of 1976 from the middle Coniacian to basal Cam described here are closestto from Mexico. inthe forms dorsum specimens The the cross they whereas flank, the on efface which becki from differs Germany of Coniacian Sch. paderbornense n. sp. in irregular ribbing and in secondaries Shüe, 82 fo te lower the from 1872) (Schlüter, Sch. compressus Sch. stinnes Klinger, - - R; 2:CPC–927,CA; 3:CPC–989,R;4:CPC–926,CA; 5:holotype, CPC–990, R.Scale:50mm. Figure 3

Schlueterella

stinnesbecki ssp. nov. from the Yellow Member of Rosario (R) and Carranza (CA) in northern Coahuila. 1: CPC–925, northern1: in Coahuila. (CA) andCarranza (R) Rosario of Member Yellow the fromnov. ssp. Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín /2019 845 5

Schlueterella stinnesbecki n. sp. from Mexico SYSTEMATIC PALEONTOLOGY Schlueterella stinnesbecki n. sp. from Mexico SYSTEMATIC PALEONTOLOGY 846 Figure 4 6 nedy and Cobban, 1991) instead on mid-flank. In mid-flank. on instead 1991) Cobban, and nedy (Kenflank the of third dorsal the on situated are non-tuberculate ribs are equallysized. Tubercles by tubercles, insomespecimenstuberculate and looped ribs,primary uptothree ribs are joined cies hasmaximum 2–3secondariesbetween the spe this but Kennedy, 2003), and Klinger (e.g., ide uoino Japanmiddle? Turonian has a comparable of Neocrioceras undulosum may have evolved from (compare spines Ifrim of ventrolateral nodes indicate formation presence of Sch. at nodes, andupto six intercalated secondaries. In broad swelling with up to three looped ribs joining has 1991) Cobban, and (Kennedy Wyoming of Schlueterella Sch. stinnesbecki addition, straight sectionsare absent in the shell of / Morphometric relationshipsof Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín sp. and

sp. from the middle to upper Coniacian N. (Sch.) compressus 0.0 0.2 0.4 0.6 0.8 n. sp., but ithassubstraightparts. Matsumoto, 1977 fromthe WB/D WI/D 0 U/D Sch. stinnesbecki et al ., 2018). Both species Schlueterella stinnesbecki Klinger, 1976,the n.sp. 50 - - /2019 D [mm] n.sp.during ontogenesis. delicately ornamented adult growth stage is either delicately ornamented juvenile growth stage to the regularly coiled,more the irregularly coiled, more ornamented coarsely In the described here,specimens the change from a higherWH/Dandlower WI/D. Japan is more robust and more densely coiled with spinigerum mann, 1982,all ribs loopbetween tubercles. In 1977; Wiese, 2000). generic assignation remains unclear (Matsumoto, ities with andinter secondaries.similar It alsobears ribs instead of spaces the on riblets weak fine has but 40mm irregular coiling, ribsandnodesat a D of in theornamentation. visible only and 4) (Figuredata morphometric the not noted mayin Itis indicate size dimorphism. at aDaroundor Daround 50mm This 100mm. 100 Schlueterella Hyphantoceras Jmo 19) rm h Snoin f of Santonian the from 1894) (Jimbo, cf. maderi 150 and Immel,Klinger & Wied Madagascarites , andits Sch. - - - 3. Conclusions Table 1.Morphometry of (complete) (complete) Collection CPC–921 (holotype) CPC–923 CPC–927 CPC–922 CPC–917 CPC–915 CPC–924 CPC–926 CPC–990 CPC–925 CPC–989 Number vlto fthisgenus. evolution of nesbecki have straight parts in their shell. a transition to later species of some shellsshow addition, the substraight parts of secondaries. In sec ondaries orincreasing number of effacing ribbing, finer and towards i.e. tuberculation ribbing, in differentiation increased which simple compared tolater show forms an in Ornamentation imens elsewhere. and findings isolated and/or incomplete spec descriptions of to due mostly before, recognized heresuggested not been has size dimorphism The other r Japanmiddle? Turoniantransitional. seemsAll of Neocrioceras undulosum of (Wiese,taxonomicposition cian the and 2000), Turonian, whereas R24 inthe Rosario fallsintothe uppermost quarry the the heregenusoldest recordsis . one Bed of of recordThe of n.sp. inthe isthusconsidered a basalform ecords are younger. Schlueterella stinnesbecki

n. sp. 125.1 120.8 158.5 141.7 103.4 95.5 89.5 76.5 67.8 67.5 63.4 D N. paderbornense Schlueterella stinnesbecki Matsumoto, 1977fromthe 33.5 32.2 21.3 19.4 15.9 15.7 36.5 38.4 24.5 22 22 Schlueterella WH islower Conia Schlueterella n.sp. described (0.27) (0.27) (0.23) (0.24) (0.29) (0.29) (0.24) (0.25) (0.23) (0.27) (0.24) n.sp. is which

stin 16.6 13.2 13.1 10.6 13.2 24.8 12.9 7.6 8.5 9.9 Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín - - - - WI - (0.06) (0.14) (0.14) (0.15) (0.11) (0.16) (0.20) (0.16) (0.07) (0.12) References Acknowledgements Collignon, M., 1969, Atlas des fossiles acknowledged.IF61/11-1) isgratefully Science Foundationthe German (DFG project editor Francisco Vega Vera. Financial support of Márquez and Tom Musselman for editing, and for their constructive reviews, Griselda Guerrero (Vienna) and Josep Moreno Bedmar (Mexico City) for help in field, reviewers Herbert Summesberger (Heidelberg) Kling Melanie collection, CPC the Saltillo,to Mexico)Desierto), foraccess Coahuila, Manuel Padilla both Desert (Museo del Museum thanked forGonzález is logisticsupport,José during the last 20 years. Arturo H.González discussions fruitful for and campaigns, field many Mexico, for of and paleontology to the geology WolfgangI thank Stinnesbeckfor introducingme 109.1 69.9 73.5 60.3 60.3 52.1 40.7 47.2 40.5 74.9 65.9 accl 1 (apne inférieur). (Campanien Tananarive, 15 ServiceGéologique, 216p. Fascicule caractéristiques de Madagascar (Ammonites), U (0.56) (0.61) (0.63) (0.67) (0.68) (0.64) (0.69) (0.53) (0.64) (0.6) (0.7) macroconch (M) micro- (m) or M M M M m m m m m m m

/2019 origination R39-41 CA4-5 CA CA R R R R R R R 847 7

SYSTEMATIC PALEONTOLOGY / CONCLUSIONS / Schlueterella stinnesbecki n. sp. from Mexico AKNOWLEDGEMENTS /REFERENCES Schlueterella stinnesbecki n. sp. from Mexico REFERENCES 848 8 Ifrim, C., P. Bengtson, and G. Schweigert, 2018, Schweigert, G. and P.Bengtson, C., Ifrim, the FamiliesGill, T., of of 1871,Arrangement Diener, C., 1925, Ammonoidea neocretacea: Klinger,C., 1976,Cretaceous H. heteromorph Kennedy, W. J., andW. A.Cobban, 1991, der Kenntnis zur Beiträge 1894, K., Jimbo, Immel, H., H.C.Klinger, and J. Wiedmann, 1982, Ifrim, C.,F. Wiese, andW. Stinnesbeck,2014, Ifrim, C.,F. J. Vega, andW. Stinnesbeck,2011, Ifrim, C.,W. Stinnesbeck,andE.Frey, 2007, / Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín Collections, 227,xvi+49p. Miscellaneous Smithsonian the Mollusks: (1: catalogus Fossilum Animalia), 29,244p. Junk, W. Berlin, Africa, 69,142 p. South the Republic of Geological Survey of the ammonites from of Zululand: Memoirs Palaeontology, 45,96p. States Western Interior: Special Papersin fromConiacian ammonitefaunas the United Folge, 2,140–198. Paläontologische Abhandlungen, Neue Fauna von der Kreideformation Hokkaido: Zitteliana, 8,3–32. Österreich: Brandenberg/Tirol, von Gosau desUnterenDie Cephalopoden Santon der org/10.1127/0078-0421/2014/0043 https://doi. 211–246. Coahuila, 47(2), Stratigraphy, Rosario, El Mexico: on Newsletters northeastern at Cretaceous) Turonian-Coniacian(Upper boundary Inoceramids andbiozonation acrossthe 526–538. https://doi.org/10.1666/10-052.1 85(3), Paleontology, of Journal limestones: from Mexican late Cretaceous platy Epizoic onammonites stramentid cirripedes org/10.1127/0077-7749/2007/0245-0071 https://doi. 71–81. 245(1), Abhandlungen, Jahrbuch für Geologie und Paläontologie, marine open plattenkalk Turonian–Coniacian) and Upper Cretaceous (Cenomanian–Turonian org/10.1016/j.cretres.2017.05.003 Research, 88,62–78.https://doi. and CretaceousCretaceousammonites: spinesinJurassic Growth andfunctionof deposits inNEMexico: deposits Neues /2019 Matsumoto, T., 1977,Some heteromorph Klinger, H.C., W. J. Kennedy, andW. E.Grulke, Klinger, H.C.,andW. J. Kennedy, 2003, Spath, L. F., 1921, On Upper Cretaceous J.,Simionescu, 1899,Fauna cretacica superióra de Schlüter, der oberen C.,1872,Cephalopoden Moreno-Bedmar, A. J. Ifrim, C. T., Nyborg, Matsumoto, T., T. Miyauchi, 1984, Some eor f h aut fScience, Kyushu the Faculty of of Memoirs Hokkaido: ammonites from the Cretaceous of Natural History, African 3,89–115. Madagascar: from Ammonoidea) and Diplomoceratidae (Cephalopoda: 2007, New and little-known Nostoceratidae the South African Museum, 110(6), 219–334. Diplomoceratidae Spath,of 1926:Annals families Nostoceratidae Hyatt, 1894 and Natal, ammonite South Africa,The Cretaceous faunas from Zululand and the DurbanMuseum, 3(2),39–57. Ammonoidea from Pondoland:of Annals 4(1), 239–275. Publicatiunile Fondului Vasilie Adamachi, la (Transilvania):Ürmös Academia Romana, 1–120. deutschen Kreide I: Palaeontographica, 21, org/10.1127/0077-7749/2014/0417 https://doi. 75–88. 273(1), Abhandlungen, Jahrbuch für Geologie und Paläontologie, State, Mexico: Neues northeastern Coahuila from the middle Santonian of preservedammonite body in chambers Fish cans: fish Cretaeous Late 2014, Vega, H. PorrasS. Muzquiz, Giersch, andF. J. Japan, 27,33–76. the Paleontological Society of Papers of Japan, Special Paper: Special Society of Hokkaido. Palaeontological Northern of Cretaceous) (Upper Campanian the from in Campanian ammonitesfrom the Soya area, University, Series D, Geology, 23(3), 303–366. . asmt (d) Sm Ammonites Some (ed.), Matsumoto T. Summesberger, H.,W. J. Kennedy, andP. Stinnesbeck, W.,Schmidt, C.Ifrim,H. A. Spath, L.F., 1926,Onnewammonitesfrom idlic, .C Bcy E Fe, A.H. González González,F. J. Vega-Vera, E. Frey, H. Buchy, M.-C. Rindfleisch, https://doi.org/10.1017/ s0016756800083710 77–83. 63(2), Chalk:Geological Magazine,the English Cretaceous, Austria) 2. Heteromorph Heteromorph Geologischen Bundesanstalt,71,101–149. 2. Ammonoidea: Abhandlungen der Austria) Cretaceous, fromCephalopods the Gosau Group (Upper Skoumal, 2017,Earlyand middleSantonian 22(3), 401–418. Revista Mexicana deCienciasGeológicas, Mexico: Muzquiz, Coahuila, northeastern Austin Group at El Rosario, countyof the UpperCretaceous in limestone deposit K. T. Smith, 2005,Anewlithographic Porras-Muzquiz, L.Cavin, G. Keller, and

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