Boletín de la Sociedad Geológica Mexicana ISSN: 1405-3322 [email protected] Sociedad Geológica Mexicana, A.C. México

Bermúdez, Hermann D.; Vega-Sandoval, Francisco A.; Vega, Francisco J. Neogene decapod from the Caribbean of Colombia Boletín de la Sociedad Geológica Mexicana, vol. 69, núm. 3, 2017, pp. 655-668 Sociedad Geológica Mexicana, A.C. Distrito Federal, México

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How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative P. 655‒668 VOL. 69NO. 3 BOL. SOC.GEOL.MEX.2017 C.P. 04510,CDMX,Mexico. Autónoma deMéxico, CiudadUniversitaria, Instituto deGeología,Universidad Nacional [email protected] Francisco J. Vega Querétaro, C.P. 76230,Mexico. Autónoma deMéxico, CampusJuriquilla, Facultad deCiencias, Universidad Nacional Licenciatura enCienciasdelaTierra, Francisco A.Vega-Sandoval USA. 440 HemlockRd.St.George, VT, 05495. D.Hermann Bermúdez D.Hermann Neogene decapodcrustaceansfromtheCaribbeanofColombia Manuscript June accepted: 10, 2017. Corrected manuscript received: June 2,2017. Manuscript received: 24,2017. April Bermúdez , Francisco A. Colombia. capoda, Neogene, Caribbean, Keywords: Crustacea, De Colombia. Caribbean coast of this area of of environmentsfor theNeogene units assemblage shallow suggest marine faciesassociation anddecapod The Panama, CostaRica,andVenezuela. taceans from the Neogene, mainly of relation withother Caribbean crus these species indicate a cor All of and Collins, 2005,and maculatus 1918), (Rathbun, Microphrys and Todd in Todd and Collins, 2005, ris, 1976, laeopinixa perornata Todd inTodd andCollins, 2005, 1919, 1919), ry, 1913), scotti Neocallichirus species are identified: Callianassidae, the following sediments, specimensof Found inshallow marine and paralic lombian Caribbean) is here reported. tions inSan Jacinto Fold Belt (Co the Las Perdices andTubará forma Neogene (Miocene to Pliocene) from decapod crustaceans from the of An abundant anddiverse assemblage ABSTRACT Vega-Sandoval Hepatus lineatinus Hepatus Petrochirus bouvieri CollinsandToddTodd in sp., Persephona enigmatica Glypturus toulai Glypturus Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín Necronectes proavitus CollinsandMor Scylla (Brown andPilsb , Francisco J. sp., Collinsand Eurytium (Rathbun, Rathbun, Euphylax Collins sp. Pa Vega ------

Colombia. Neógeno,, Caribe, Palabras clave: Crustacea, área delacostacaribeColombia. meros para las unidades neógenas de esta táceos sugierenpaleoambientes marinos so asociaciones de facies y elconjuntodecrus de Panamá, Costa Rica, y Venezuela. Las del Neógeno,de crustáceos principalmente con otras asociaciones caribeñas rrelación sp. Todas estas especies indican una co in Todd and Collins, 2005, y Euphylax proavitus llins, 2005, tica and Morris, 1976, (Rathbun,1919), and Pilsbry, 1913), gado de SanJacinto (Caribe colombiano). Las Perdices y Tubará en elCinturón Ple (Mioceno al Plioceno) delas formaciones decápodos del Neógeno ción de crustáceos una diversaSe reporta y abundante asocia RESUMEN 2005, Collins and Todd in Todd and Collins, ri llianassidae, encontrados ejemplares de las especies: Ca En sedimentos marinos y parálicos, fueron Rathbun, 1919, Collins and Todd in Todd and Co Palaeopinixa (Rathbun, 1918),

maculatus Neocallichirus Microphrys Collins and Todd

Persephona Petrochirus /2017 Hepatus perornata Glypturus sp.,

scotti Necronectes

Scylla Eurytium lineatinus

Collins (Brown (Brown enigma

bouvie toulai 655 sp., ------

Neogene decapod crustaceans from the Caribbean of Colombia ABSTRACT Neogene decapod crustaceans from the Caribbean of Colombia INTRODUCTION 656 656 1.2. STRATIGRAPHY 1.1. LOCATION ANDGEOLOGICAL SETTING 1. Introduction Colombia), where fossiliferous horizons include tween (N Cartagena and Barranquilla de Indias atmainly the Luruaco anticlinorium, placed be are found at the San Jacinto Fold Belt (SJFB), Neogene shallow units marine lithostratigraphic with a few horizons withcalcareous concretions, mudstone, marl shale, andgray mainly of sists tion (Upper Oligocene – middleMiocene)con Perdices(Figure Las 2).The formations Forma Perdices, the Las PiojóandTubarásediments of Luruacoanticlinorium includesNeogene The sandstoneandconglomerate. tercalations of in with marls in the syncline, Tubará of flank W leads to the municipio de Tubará, Atlántico, at the Tubará Formation were found alongroadcuts that shales andmarls. specimens from the bymainly the unit, composed cline, at the top of the Tubará syn correspond to the SE plunge of town, Atlántico (Figure sampled horizons 1). The Hibacharo lected in outcrops located NE of 1 km mens from the Las Perdices Formation were col Bogotá, D.C. crustacean speci The km north of (Figure Barranquilla 1), approximately 700 SW of 50 km Atlántico department), region (Warea of Colombia,inthe Luruaco the Caribbean coast of studyThe area islocated on the central portion of ceans are callianassoidsandportunoids. the cuticle. mostabundant The crusta details of fine with some carapaces, articulated and articles have agoodpreservation, includingbothisolated the crustacean specimens an Caribbean. Most of Neogene crustaceans from the Colombi cord of (Pineda-Salgado paleoenvironments defined and age precise more andpaleontological reports indicate a graphic Weisbord, 1929).Recently, more detailed strati andBrown,(Pilsbry 1927,1929; 1917;Anderson, abundant mollusks, reported by several authors / Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín et al ., 2013). This is the first re first the is This 2013). ., ------/2017 (1929), Barrios (1960), Bermúdez (1960), Bermúdez (1929), Barrios by several (1929), Weisbord Anderson authors: remains. fossilshave These been partially studied fish foraminiferaand tubes,wellas annelid as and invertebrate fossils, mainlymollusks, echinoderms macro abundant include sequences fine-grained The coquina. sandstone, withabundant layersof the base, followed by mudstone and fossiliferous conglomerate and sandstoneat of cene) consists TubaráThe Formation (upper Miocene –Plio shale, intercalated with sandstonebedsat the top. mudstone and base, followed by thicklayers of verysandstone bedsatthick the of cene) consists top. PiojóFormation The (middle – upper Mio and siderite and thinsandstones lenses near the thin to thick fossiliferousthin tothick dark-gray shale layers, unit(Molinaresstratigraphic Pliocene age Formation, found near the top of the Tubará verse withinthe fossiliferous bedsof Crustacean remains are more abundant and di most coastallagoons. 2007),asseenin (Coatesisms andMacEachern, filter-feeding organ preventsThis the presence of and Nelson,1996;Laenen and DeCraen, 2004). Middleton 1981; (Berner, methane of presence oxic bacteria, causing siderite precipitation and an of influence the byremoved is oxygen where cies withabundant vegetal remains(Berner, 1971), fa estuarine to fluvial in environment reducing a inforce the paleoenvironmental of interpretation siderite re 2009).Presence of and MacEachern, (Maceachern organisms infaunal to cause stress andprevent a presence of marine water. conditions have These been shown of influence occasional environmentswith anoxic middle Miocene asmuds in low-energy, deposited phy, these layers were during early deposited to noplankton, foraminifera and pollen biostratigra tubes, andechinoids. Based upon calcareous nan fragments, andbivalves, gastropods, polychaete dark-grayin athick, massive claystone, withcoal Perdices theLas Formation, concretions within of Crustacean specimens were collected near the top (2015). neda-Salgado et al . (2013), Vega and Bermúdez et al ., 2005;Bhattacharya et al ., 2007),within et al . (2009),Pi ------2. Material localities: (1)Hibacharoarea,Las Perdices Formation,(2)Tubará area, Tubará Formation. Figure 1 catalog numbers UN-DG-CR. to deGeociencias, Bogotá D.C., Colombia, under de Colombia, Facultad de Ciencias, Departamen the Universidad Nacional tological Collection of studyThe specimensare in the Paleon deposited andmolts. articulated corpses presence of ing low andfastburial, energy as indicated by the sandstone,remainsarefine found in suggest dominated bysandstone, whereas more complete the Tubará Formation,at the top of in a lithology bioclastsincludecrustaceanremains mulationsof tubes, accu shark teeth and turtle remains). Storm ing gastropods, bivalves, cirripedians, polychaete low, lithic sandstone andcoquinoidbeds(includ interbedded with thick,cross-bedded, grayish-yel Location mapoftheLuruaco anticlinorium, province,Caribbeanof north Colombia,withpositionof regionofSJFB fossil Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín ------3. Systematicpaleontology Systematic orderbased ondeGravemainly is to offeramore specificidentification. specimens are The incomplete as high as carpus. smooth outer surface; propodus semirectangular, narrow, carpus, carpus one-third the length of lar, longitudinal keel on outer surface; withsharp Description. (2009). Infraorder AxiideadeSaintLaurent, 1979 Superfamily CallianassoideaDana,1852 Family CallianassidaeDana,1852 Order DecapodaLatreille, 1802 Merus elongated, semirectangu Figure 3.1 /2017 et al 657 657 - .

INTRODUCTION / MATERIAL / Neogene decapod crustaceans from the Caribbean of Colombia SYSTEMATIC PALEONTOLOGY Neogene decapod crustaceans from the Caribbean of Colombia SYSTEMATIC PALEONTOLOGY 658 658 horizons containing crustaceanspecimens. anticlinorium province),showing area(North SJFB positionof Figure 2 (Rathbun, 1918). Panama ed from the middle to Late Miocene of Comments. length =35.4mm,height 16.8mm. 33.2 mm, height = 14.2 mm;UN-DG-CR-034, Measurements. mation, UpperMiocene-Pliocene. DG-CR-033 and UN-DG-CR-034. Tubará For Material. / Stratigraphic section of Stratigraphic ofLuruaco Neogene section units Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín Two incomplete left chelipeds, UN- Callianassidae remains are report UN-DG-CR-033, length = - - /2017 sal andventral marginsslightly divergent distally Comments. dus length=18.2mm,height15.5mm. Measurements. Tubará Formation, UpperMiocene-Pliocene. Material. of propodus. thelength finger elongated, half granulated, fixed smooth; surface inner finely face ly, andventral dorsal margins smooth,outer sur upper and lower margins slightlydivergent distal Description. height = 12.5 mm;UN-DG-CR-040, left propo DG-CR-039, left propoduslength =19.2mm, UN- mm; 11.5 = height mm, 19.8 = length dus height = 14.6 mm; UN-DG-CR-038, right propo DG-CR-037, right propodus length = 17.7 mm, UN- mm; 15.5 = height mm, 18.2 = length dus Measurements. Formation, UpperMiocene–Pliocene. UN-DG-CR-036 to UN-DG-CR-041. Tubará merus), two right propodi andoneleft dactylus, Material. occlusal surface. tion, serrated on distal portion of left dactylus withfew tubercles onproximal por finger short, with sharp ridge on posterior portion; fixed tubercles; small few bears margin anterior inner andouter surfaces smooth,outer portion of margin,on dorsal spines ventral margin, traces of margin; propodus nearly aslonghigh,serrated Description. mations) (Rathbun, 1919). Panama (Culebra and Gatun for the Miocene of specimens to of the Colombian are features that suggest affinity Subfamily Callichirinae ManningandFelder, Neocallichirus scotti Neocallichirus Genus Glypturus toulai Glypturus One right propodus, UN-DG-CR-035. Three left propodi (one includes Neocallichirus scotti Neocallichirus Rightpropodussubquadrate, dor Right propodus subquadrate, Merussubovate, withserrate lower Glypturus Neocallichirus Figure 3.4–3.13 Figure 3.2,3.3 UN-DG-CR-035, left propo UN-DG-CR-036, left propo (Brown andPilsbry, 1913) 1991 (Rathbun, 1919) Stimpson,1866 Sakai,1988 , reported also from ------UN-DG-CR-043; 19, left andUN-DG-CR-043; 19,left rightchelaeUN-DG-CR-044. 20-24, propodus and1919, 14,left anddactylus dactylusUN-DG-CR-042;15-18,left close-ups of cuticleornament andsurface occlusal merus andto UN-DG-CR-039;12,left propodusUN-DG-CR-040;dactylus UN-DG-CR-041.14-19, 13,left propodus UN-DG-CR-035. 4-13, Figure 3 carapace withright cheliped UN-DG-CR-047. Allspecimens from theTubará Formation,Upper Miocene-Pliocene.Scalebars= 10mm. dorsal and ventralcarapace withsternum and abdomenUN-DG-CR-045;22, 23,dorsaland ventralcarapaceUN-DG-CR-046; 24,dorsal 1, Callianassidae, left merus, carpusand 1,Callianassidae,left propodusUN-DG-CR-033.2,3, Glypturus toulai (Rathbun, 1919), 4, 5, left propodus UN-DG-CR-036; (Rathbun,1919),4,5,left 6-11,rightpropodus UN-DG-CR-037 Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín Hepatus lineatinus Collinsand Toddinand Collins,2005;20, 21, Neocallichirus scotti (Brown and Pilsbry, 1913),right Petrochirus bouvieri /2017 Rathbun, 659 659

Neogene decapod crustaceans from the Caribbean of Colombia SYSTEMATIC PALEONTOLOGY Neogene decapod crustaceans from the Caribbean of Colombia SYSTEMATIC PALEONTOLOGY 660 660 lai with specimens new the of affinities margin,on dorsal suggest spines and traces of Comments. height =5.1mm. DG-CR-041, left length = 12.5mm, dactylus UN- height =10.3mm; length dus =20.1mm, 11.2 mm. dactylus length height 12.6 mm, = 25.7mm, = 9.7 = left mm, propoduslength height = = 45.2mm, height mm, 18.9 = length dactylus right propodusheight =24.3mm, length= 42.1mm, chelae, right of pair UN-DG-CR-044, mm; 7.8 = width mm, 13.8 = length dactylus right CR-043, dus length = 24.6 mm, height = 9.8 mm; UN-DG- Measurements. – Pliocene. DG-CR-044. Tubará Formation, Upper Miocene chelae, UN-DG-CR-042 to UN- and apair of Material. tituberculated granules. as fixed finger, both denselyornamented with mul long as finger, dactylus fixed than shorter slightly propodus inflated, slightly propodus left nament; dactylus, covered bystrong multituberculated or of length the two-thirds finger fixed size, diverse occlusal surface covered by strong of granules covered by strong multituberculated ornament, lus triangular, surface,on dorsal withshortspines but twiceitsheight;rightpropoduscurved, dacty strong tubercles; right chela as long as left chela Description. Klompmaker Todd1919; Hyžný Collins,2005; and and Gatun formations, respectively) (Rathbun, Panama (Culebra Lower to Upper Miocene of / (Rathbun,1919), which reportedis fromthe Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín Superfamily Paguroidea Latreille, 1802 Infraorder Anomura MacLeay, 1838 Family DiogenidaeOrtmann, 1892 Genus Petrochirus bouvieri Oneleft propodus, onerightdactylus Propodus serrated ventral margin et al Left and right chelae covered by Petrochirus Figure 3.14–3.19 ., 2016). UN-DG-CR-042, left propo Stimpson,1858 Rathbun, 1919 Glypturus tou Glypturus et al ., 2013; - - - - - /2017 Description. lins, 2005). (Rathbun, formations) gres 1919; Todd andCol Panama (Gatun and Cha from the Miocene of specimens with study the of affinity indicates ornamentation cles Comments. de Veraguas (Todd formations) andCollins, 2005). Panama (Gatun andEscudo cene andPliocene of lineatinus anterolateral margins indicate affinity with on spines short and multiple granules fine with ed Comments. 19.4 mm,width=25.4mm. CR-047, carapace withright cheliped, length = UN-DG- mm; 32.4 = width mm, 18.8 = length width = 22.5mm;UN-DG-CR-046, carapace, and abdomen,length = 32.1mm, with sternum Measurements. Formation, UpperMiocene-Pliocene. UN-DG-CR-045 to UN-DG-CR-047. Tubará domen andoneother preserving rightcheliped, and ab (UN-DG-CR-045) preserving sternum Material. 5. Rightcheliped robust. rower; pleon triangular, narrow,3 to fusedsomites narrow, sternum becomemuch laststernites nar granules; fine by covered surface defined, weakly the maximum carapace regions length, dorsal half lateral margin covered by smallgranules, about two-thirds the maximum carapace length, postero tiple onanterolateralshort spines margin, about versely subovate, one-third wider than long, mul Hepatus lineatinus Hepatus Superfamily Hexapodoidea, Miers, 1886 Genus Infraorder Brachyura Latreille, 1802 Family Hexapodidae Miers, 1886 . This species is reported is species from . This the Mio Family Aethroidea Dana,1851 Genus Three nearly complete carapaces, one Saeo chelae and strong tuber Shape of Sz fcarapace, cuticle ornament Size of Palaeopinnixa Crpc fmediumsize, trans Carapace of Figure 3.20–3.24 Petrochirus bouvieri Hepatus CollinsandTodd inTodd and UN-DG-CR-045, carapace Collins, 2005 Latreille, 1802 Vía-Boada,1966 , reported also Hepatus Hepatus ------lated pereiopods, length = 7.2 mm,width= 9.5 UN-DG-CR-65, 11.2 mm; carapace with articu articulated pereiopods, lengthwidth = =7.5mm, Measurements. Lower Miocene. and UN-DG-CR-65. PerdicesLas Formation, found incalcareous concretions UN-DG-CR-64 Material. to 4slender. palms,inflated 2 pereiopods strongwith chelipeds cardiac region; two smallswellings on each sideof distinct; cardiac region with two smalltubercles; protogastric onespecimen; region of steinkern onthe observed are cuticle granulated finely of width; cervical groove impressed; deeply remains terior margin straight, three-fourths the carapace also concave, one-third the carapace length; pos carapace length; posterolateral margin thirdsof imum width;anterolateral margin concave, two- max long; anterior wide as margin two-thirdsof Description. al spines; surface finely granular, ornamented by granular, ornamented finely surface spines; al rior portion narrow, with three short posterolater Description. ilera Venezuela (Feldmannand Schweitzer, 2004;Agu bados andTrinidad (Collins and Morris, 1976), Bar species isreported from the early Miocene of to lombian specimens the Co of affinity indicate cuticle granular finely Comments. mm. Persephona enigmatica Palaeopinixa perornata Superfamily LeucosioideaSamouelle, 1819 et al Family LeucosiidaeSamouelle, 1819 Subfamily PhilyrinaeLeach, 1817 ., 2010)andMexico (Vega Genus Two carapaces andpereiopods dorsal Tesalcrpc n rcso smallcarapace and traces of The Carapace small, subglobose, poste Carapace small, suboval, twiceas and Collins, 2005 Figure 4.2–4.6 Persephona UN-DG-CR-64, carapace with Figure 4.1 CollinsandTodd inTodd CollinsandMorris, 1976 Palaeopinixa perornata Leach, 1817 et al ., 2009). . This . This Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín ------lins, 2005). Panama (ToddCayo Agua Formation andCol of with thisspecies, alsoreported from the Pliocene affinity suggest spines posterolateral two and tral the cen position, carapace shapeandpositionof Comments. mm. CR-049, carapace, length = 8.9 mm, width UN-DG- = 12.5 mm; 18.5 = width mm, 22.1 = length Measurements. Tubará Formation, UpperMiocene-Pliocene. UN-DG-CR-049. and UN-DG-CR-048 paces, Material. suboval. relatively granules, coarse evenly spaced. Orbits gest affinity to affinity gest scattered strong spines, sug of carapace ornament Comments. length =45.7mm,width38.8mm. Measurements. Miocene-Pliocene. DG-CR-050. Tubará Formation, Upper Material. region. branchial al spineortubercle at lateral of angle spines,broadly asmallmargin spacedsharp somewhat surface covered depressed, dorsal by Description. offer adetailedspecificidentification. more complete arespecimens needed orderin to resents the first fossil record for the genus, however Superfamily Portunoidea Rafinesque, 1815 Genus Genus Subfamily Necronectinae Glaessner, 1928 Superfamily MajoideaSamouelle, 1819 Subfamily MithracinaeMacLeay, 1838 Family Portunidae Rafinesque, 1815 Family MajidaeSamouelle, 1819 One complete and one partial cara Oneincomplete carapace, UN- Microphrys Necronectes The finely granulated cuticle and cuticle granulated finely The Carapace subpyriform and dorsal Carapace subpyriform anddorsal Carapace large, broadly pyriform, Microphrys ND-R08 carapace UN-DG-CR-048, UN-DG-CR-050, carapace Microphrys Figure 4.7 H.Milne-Edwards, 1851 A.Milne-Edwards, 1881 . The sole specimen rep . The sp. /2017 661 661 ------

Neogene decapod crustaceans from the Caribbean of Colombia SYSTEMATIC PALEONTOLOGY Neogene decapod crustaceans from the Caribbean of Colombia SYSTEMATIC PALEONTOLOGY 662 662 very weakly developed; frontal margin withfour versely,covered by granules; carapace regions fine than long, surface weakly dorsal convex trans Description. Cáceres 1975; Schweitzer Rico, Panamá, Venezuela and Ecuador(Roberts, Puerto previouslyreported from the Miocene of species, this with affinity suggest that Colombia are features observed in the new specimensfrom margin, witheight tonineacute triangular spines, lateral margin convex, longer than posterolateral Comments. width =22.7mm. UN-DG-CR-056, carapace length = 12.5mm, mm; 34.8 = width mm, 24.1 = length carapace width =32.3mm;UN-DG-CR-055, 23.3 mm, UN-DG-CR-054,62.3 mm; carapace length = CR-053, carapace length = 43.3 mm, width = length = 33.3mm,width54.2mm;UN-DG- Measurements. Upper Miocene-Pliocene. CR-052 toUN-DG-CR-056. Tubará Formation, Material. cavity; nopereiopods orchelipeds preserved. of long; third maxillipeds do notcover axial portion cal position; buccal cavity rectangular, wider than abdominal somitesreduced, in subverti carried fused somites 3–5,proximal wider at level of nal plate by distinctgroove; abdomen triangular, distally; fifth sternites separated from anterior ster faces marginal straight two somite, fifth of angle strongly concavearound andcurving anterolateral process welldefined, lateraltriangular; sternal ites narrow, three and four fused,fourth sternites stern the maximum carapace width; thoracic sternites gin weaklyconcave; posterior margin one-fourth to nineacute triangular posterolateralspines; mar vex, longer posterolateralthan margin, witheight short triangular spines; anterolateral margin con / Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín Necronectes proavitus et al Five incomplete carapaces, UN-DG- ., 2016). Saeadsz fcarapace, antero Shape and size of Carapace medium to large, wider Figure 4.8–4.11 UN-DG-CR-052, carapace et al ., 2006; Collins (Rathbun, 1918) et al ., 2009; ------/2017 Comments. length =38.5mm,width28.5mm. Measurements. Miocene-Pliocene. DG-CR-051. Tubará Formation, Upper Material. spines; female abdominal somites 3 –5fused,wide. anterolateral margins curved, withat least seven poorly defined, carapace covered granules;by fine Description. weakly concave 4 sub anteromedially; sternite 3subhexagonal, weakly tumid;thoracicsternite the metabranchial lobes are depressed, other lobes andlateral hepatic, mesogastric parts of granules; branchial ridge distally bounded by double row of margins, withfour anterolateral epi short spines; gins straight, shorter than sinuous posterolateral ulated upper orbital margins; anterolateral mar T-shaped constricted at and deeply its base; gran gin equals entire carapace width; rostrum wide, and branchial regions elevated; orbitofrontal mar it rises to rounded protogastric region; cardiac slightly arched transversely, inlongitudinal section length about two-thirds the maximum width, Description. thisaffinity.to confirm more complete specimens are to be found inorder on anterolateral spines margin, but number of Puerto Rico andHaiti,inshape Miocene of la costata Euphylax maculatus Subfamily Podophthalminae Dana,1851 Rathbun,1919, from the Oligocene – Genus Oneincomplete carapace, UN- Genus The single specimenresembles single The Carapace wider than long, regions Carapace transversely subovate, Figure 4.14–4.19 Euphylax Figure 4.12,4.13 Scylla UN-DG-CR-051, carapace CollinsandTodd inTodd and Collins, 2005 Scylla DeHaan,1833 Stimpson,1860 sp. Scyl ------and ventralcarapaceUN-DG-CR-058; 16,close-up ofanterolateral left portionof incompletecarapace, showing dorsalcuticleofleft maculatus 12, 13, UN-DG-CR-052; 9,small,incomplete dorsal carapaceUN-DG-CR-056; 10,11,nearlycompletedorsal and ventralcarapaceUN-DG-CR-053. UN-DG-CR-050. 8-11. incomplete dorsalcarapaceUN-DG-CR-049.7, Pliocene, 2-4,dorsal carapaceand close-ups ofanterior and posterior portionsofcuticleUN-DG-CR-048; 5,6,close-up of cuticleand pereiopods UN-DG-CR-64. 2-6, Figure 4 Tubará Formation,Upper Miocene-Pliocene, incompletedorsalcarapace UN-DG-CR-063.Scalebars= 10 mm. propodus UN-DG-CR-060; 17,18,incompletedorsal andchela UN-DG-CR-057. 20, ventralcarapace UN-DG-CR-061;19,left Scylla 1, Collinsand Todd inToddand Collins,2005,Tubará Formation,UpperMiocene-Pliocene,14, 15,nearly completedorsal Palaeopinnixa perornata sp.,Tubará Formation,Upper Miocene-Pliocene,incompletedorsaland ventralcarapace UN-DG-CR-051.14-19, Necronectes proavitus Persephona enigmatica Collinsand Formation,Lower Morris,1976,LasPerdices Miocene,dorsalcarapaceand (Rathbun,1918),Tubará Formation,Upper Miocene-Pliocene,8,incomplete dorsal carapace Microphrys Collinsand Todd inToddand Collins,2005,Tubará Formation, UpperMiocene- sp.,Tubará Formation,Upper Miocene-Pliocene,incompletedorsalcarapace Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín /2017 Eurytium Euphylax sp., 663 663

Neogene decapod crustaceans from the Caribbean of Colombia SYSTEMATIC PALEONTOLOGY SYSTEMATIC PALEONTOLOGY / Neogene decapod crustaceans from the Caribbean of Colombia CONCLUSIONS / ACKNOWLEDGMENTS 664 664 and shape, fingers flattened, tricuspidate, dactylus flattened, shape,fingers and similarsize somite 3; chelae of widest at level of somites reduced; female abdomen semicircular, 3–5,proximalabdominal somites abdominal male abdomen triangular, fused wider at level of carapace; ing narrow towards posterior portion of peltoid, becom trapezoidal, 3 reminder sternites small, rimmed, front subrectangular, projected two-thirds maximum width, orbits semicircular, size; anterior margin uniform of cle with granules agonal, wider than long, widestat midlength; cuti Description. lins, 2005). Costa Rica (Todd andCol and the Pleistocene of Panamá is reported from the Miocene-Pliocene of the of Colombian specimens to this species. species The affinity suggest chelae of ornamentation four anterolateral and shape spines ence of Comments. width =38.9mm. UN-DG-CR-061, carapace length = 32.3mm, carapace length = 20.1 mm,width= 25.1 mm; width =41.4mm;UN-DG-CR-060, 20.3 mm, = UN-DG-CR-059,66.5 mm; carapace length = width mm, 41.8 = length carapace CR-058, length = 29.3mm,width46.1mm;UN-DG- Measurements. Tubará Formation, UpperMiocene-Pliocene. carapaces UN-DG-CR-057 to UN-DG-CR-061, Material. carpus. outer surface, strong tuberclewith nearjunction margins;left palm withthree longitudinal keels on granules, in longitudinal rows arranged on lateral left palm, covered by margin; margin dorsal of basal along ridged finger fixed medially, ridged / Boletín de la Sociedad Geológica Mexicana Geológica Sociedad la de Boletín Superfamily XanthoideaMacLeay, 1838 Subfamily Panopeinae Ortmann,1893 Family Panopeidae Ortmann,1893 Genus Onecomplete and four incomplete Subhexagonal carapace shape, pres Crpc fmediumsize, subhex Carapace of Eurytium UN-DG-CR-057, carapace Eurytium Figure 4.20 Stimpson,1859 sp. - - - - - /2017 5. Acknowledgments 4. Conclusions Measurements. Miocene-Pliocene. DG-CR-063, Tubará Formation, Upper Material. cervicalgrooveraised platform; impressed. deeply region semioval, inclined; metabranchial region a row; cardiac region subtrapezoidal; mesobranchial rostrum; urogatric region depressed, nar base of tagonal, with anarrowprocess that extendsto only verted-subtriangular; region mesogastric subpen one-third carapace width; protogastric region in carapace; posterior margin straight, narrow,of the length terolateral margin slightlyconcave, half carapace; pos the length of margin concave, half beyond orbits, withmediangroove; anterolateral de Investigación Paleoexplorer (Project “Fossil Funding for this research wasprovided by Grupo Costa Rica. cean assemblages from Panama, Puerto Rico and crusta (Miocene-Pliocene) Neogene with affinity possible to documentastrong paleobiogeographic fossilports on decapods from theCaribbean, itis marine sediments.deep Due tothe numerousre formations, previously byas composed interpreted shallow faciesfor the Las Perdices andTubaráof cean assemblage reinforcesrecent interpretations shallowColombia. The marineto estuarine crusta portant addition tothefossildecapod diversity of Colombia represents an im the Caribbean of of newcrustacean assemblageThe from the Neogene thisaffinity.needed toconfirm carapace, but more complete arespecimens of Puerto Rico,size, in shapeandornament cene of Feldmann,Hull, Santos,fromMio and 2008, the granulosum Comments. length =19.2mm,width17.9mm. Schweitzer, Velez-Juarbe, Martinez, One incomplete carapace UN- The specimen resembles The UN-DG-CR-063, carapace Eurytium Eurytium ------6. 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