Arthropods & Trilobites Meeting - Congress - Symposium
Prague, Czech Republic, and Sardinia, Italy
Summer 2012

TRILO 2012 Conference
The 5th Conference on Trilobites and their relatives, 1st July – 4th July 2012, Prague, Czech Republic

Juan C. Gutiérrez-Marco

Name:Dr. Juan C. Gutiérrez-Marco


New records of telephinid trilobites (Carolinites and Oopsites) from the Ordovician of the Central Andean Basin

Section: Biostratigraphy and palaeography, Presentation: Oral
Ordovician, Central Andean Basin, Bolivia, Peru, Epipelagic trilobites, palaeobiogeography
Epipelagic telephinids rarely occur in mid to high paleolatitudinal settings during the Ordovician. Extremely widespread taxa such as Carolinites genacinaca span the entire palaeotropical realm (McCormick and Fortey, 1999), while others, like the genus Telephina, seem restricted to the periphery of the continental paleoplates (Ahlberg, 1995). The record of telephinids in the Ordovician of South America starts with the discovery of “Keidelia” (= Carolinites) macrophtalma by Harrington and Leanza (1957) and Telephina argentina by Baldis and Blasco (1974) in the Argentinian Precordillera, plus “Tafnaspis” (= Carolinites) iglesiasi by Leanza and Baldis (1975) in the eastern Puna belt of the same country. With the exception of a single occurrence of Carolinites genacinaca Ross from the Lower Ordovician of Bolivia (Aceñolaza et al., 1999), the remaining South American telephinids were reported from Argentina, where they occur throughout the Floian-Sandbian of the Precordillera (Carolinites macrophthalma, C. killaryensis (Stubblefield), C. constrictus Benedetto and Cañas, Telephina argentina Baldis and Blasco, T. calandria Chatterton et al., T. chingolo Chatterton et al. and T. problematica Chatterton et al.), as well as in the Lower Ordovician of the Famatina Basin (C. cf. genacinaca and Oopsites sp.): see Benedetto et al. (1986), Vaccari and Waisfeld (1994), Chatterton et al. (1989) and Waisfeld and Vaccari (2003). In the Argentinian part of the Central Andean Basin, Carolinites was known from three Lower Ordovician localities in the Jujuy province: one in the eastern Puna (C. iglesiasi of Leanza and Baldis, 1975) and two others in the Cordillera Oriental (Carolinites sp. of Waisfeld and Vaccari, 2003). We here confirm the occurrence of Carolinites genacinaca in carbonate coquinas from the type section of the Sella Formation of the Cordillera Oriental of Bolivia, adding some new specimens (two cranidia and a pygidium) to the single cranidium illustrated by Aceñolaza et al. (1999) for the same locality. Also we report the first record of Oopsites in the Cordillera Oriental of southeastern Peru, occurring in Lower Ordovician siltstones of the San José Formation in a section located in the Apurímac river valley, northwest of the well-known site of Machu Picchu. Both finds represent the northernmost occurrences of the genera Carolinites and Oopsites in present day South America, reported within the late Floian-early Dapingian Famatinolithus Fauna, which is assigned to intermediate paleolatitudes along the Famatinian and Central Andean basins (Benedetto et al., 2009). The rare record of these telephinids has been related to warm water currents, probably due to equatorial surface gyres moving southwards and sporadically carrying epipelagic trilobites away from the tropics (McCormick and Fortey, 1999). This is argued by the latter authors to explain the individual records of Carolinites in the Lower Ordovician of southeastern France and Turkey. This research was funded by the Spanish Ministry of Economy and Competitiveness (Project CGL2009-09583/BTE, lead by E. Villas), and is also a contribution to the IGCP Project 591 (IUGS-UNESCO).

Ordovician trilobites and trilobite traces from the Cabañeros National Park (central Spain)

Section: Other, Presentation: Poster
Ordovician, central Spain, trilobites, trilobite traces, national park, geological heritage
The Cabañeros National Park is located within the Palaeozoic basement areas belonging to the southern part of the Central Iberian Zone of the Iberian Massif. It is mainly composed of Lower Cambrian to Middle Ordovician marine rocks, affected by Variscan folding and faulting and by differential erosion processes of the Palaeozoic formations leading to an Appalachian-like relief. Starting from 2006, the present authors have been carrying out studies to increase the geodiversity knowledge within the extension of the National Park, especially aimed at identifying geosites of national and international interest, as well as implementing the geotouristic potential of some of the existing trails and 4WD routes through the park. This systematic research led to the discovery of important Ordovician fossil localities rich in trilobites or trilobite traces that are briefly examined in this note. Occurrences of Ordovician trilobites are restricted to several outcrops of the lower part of the Navas de Estena Shales, close to the northern and southern boundaries of the Cabañeros National Park. The northernmost two sites lie at the periclinal end of two small synclines north of the Calanchera Fault (the points Calanchera 1 and 2), while the third is situated in the soutwestern flank of the Navas de Estena syncline, northwest of the homonymous town (“Las Cuevas” locality). In the southern area, several fossiliferous sites occur in both flanks of the La Chorrera syncline: these are the Los Medianiles, Vallelobo, El Robledo and Solana del Cuervo 1 and 2 fossil localities. All of them come from the lower part of the Navas de Estena shales, ranging between 60 and about 200 m above the base of the formation, which represent a substantial part of the Placoparia cambriensis trilobite Biozone, here dated by graptolites as early Oretanian of the Mediterranean regional scale (approx. equivalent to the early-middle Darriwilian -lowermost Da2 substage- in the global scale). The whole assemblage comprises at least 13 different species belonging to three trilobite orders. The Asaphida include asaphines like Nobiliasaphus delessei (Dufet), isotelines such as Asaphellus toledanus (Gil), ogygiocaridines (Ogyginus forteyi Rábano) and some dikelokephalids as Hungioides bohemicus (Novák in Perner). The order Phacopida is the most diverse and is represented by the calymenids Neseuretus avus Hammann, Colpocoryphe thorali conjugens Hammann and Salterocoryphe ‘lusitanica’ (Thadeu), bathycheilids (Bathycheilus castilianus Hammann), dalmanitids (Retamaspis melendezi Hammann, Kloucekia drevermanni Hammann), cheirurids (Pateraspis mediterranea Hammann) and pliomerids (Placoparia cambriensis Hicks). The single representative of the trilobite order Corynexochida is the illaenid Ectillaenus giganteus (Burmeister). Trace fossils, currently attributed to a wide range of trilobite activities, are abundantly in the Armorican Quartzite, in the upper part of the ‘Intermediate Beds’ below it, and also in the upper Marjaliza Beds. The Cruziana ichnofacies represented in diverse localities along the Sierra Fría, Garbanzuelo and Cabañeros anticlines, yielded abundant specimens of Cruziana rugosa d’Orbigny, C. furcifera d’Orbigny, and C. goldfussi (Rouault), sometimes grouped in extense beds indicative of the gregarious behavior of their tracemakers during collective moulting or mating. More sparse is the record of other ichnospecies such as Cruziana problematica (Schindewolf), C. rouaulti Lebesconte, C. imbricata Seilacher, C. ‘vilanovae’ (Saporta and Marion) sensu Delgado (=? C. barriosi Baldwin), C. cf. cordieri Rouault or C. yini Yang, as well as some scarce representatives of Rusophycus ispp. and Monomorphichnus ispp. Finally, a resting trace of giant size (70 cm long and 45 cm wide) has been identified as Tumblagoodichnus? isp., maybe related to an ichnogenus made by unknown amphibian non-trilobite arthropods. Part of these ichnological localities are important and display a special interest for their geotouristic potential, having been already incorporated to the list of the Spanish geological heritage sites and being accessible to Park’ visitors throughout the Boquerón del Estena walking trail and through the Rocigalgo route for 4WD-vehicles. This research was funded by the Spanish Ministry of Agriculture, Food and Environment (Project 052/2009 of the National Parks’ Network). .


NEW PHOTOS: Participant's photos
Participant's photos

NEW PHOTOS: Sessions and dinner
Photos from sessions and the conference dinner

NEW PHOTOS: Mid-conference trip
Photos from Mid-conference field trip

NEW PHOTOS: Pre-conference trip and Icebreaker party
Photos from Pre-conference field trip and the Icebreaker party


26th – 29th June: Field trip
Lower Palaeozoic of the Barrandian area, Czech Rep.

1st – 4th July: Conference
Geoscience Building of the Faculty of Science of Charles University, Albertov 6, Praha 2, Prague, Czech Republic (maps)

5th – 9th July: Field trips
Sardinian Lower Palaeozoic, Italy and Late Palaeozoic in Moravia, Czech Republic


Oldřich Fatka
Charles University
Prague, Czech Republic

Petr Budil
Czech geological Survey
Prague, Czech Republic

Contact e-mail:
conf (at) trilo2012 (dot) org

Sponsors and organisers of the 5th International Trilobite Conference

5th International conference on Trilobites and their relatives TRILO2012, July 2012, Prag, Czech Republic | Webdesign Pavel Bokr | Logotype Radko Šarič | Ilustrations Iva Vyhnánková | savana