@article{10.11648/j.ajbio.20221004.11,
  author = {Raúl Sabino Carrasco-Ramírez},
  title = {Ammonites of the Oxfordian and Kimmeridgian Age from North of Mexico},
  journal = {American Journal of BioScience},
  volume = {10},
  number = {4},
  pages = {131-136},
  doi = {10.11648/j.ajbio.20221004.11},
  url = {https://doi.org/10.11648/j.ajbio.20221004.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajbio.20221004.11},
  abstract = {Few kilometres west of Aramberri, N. L This research work deals with the study of the ammonites of the Upper Jurassic outcrops, México were studied ammonites from the Ibarillas South of Nuevo Leon, Mexico, driving on federal highway No. 61 we get to Aramberri locality section which consists of 40 m of limestones at its lower part of the Zuloaga Formation. which bears the ammonite fauna described herein. Most of the north-north-west trending ranges of the area are made up of schist rocks of Paleozoic age, resting unconformably are limestones of Upper Jurassic age and finally are covered unconformably by conglomerates of Tertiary age. All collected ammonites were taxonomically studied and at the same time are included pictures with descriptions of four species one is the Upper Oxfordian Vinalesphinctes ex gr. roegi, the other three came from the Lower Kimmeridgian of North of Mexico. One of the three taxa described here is the Upper Oxfordian genus Vinalesphinctes. Belong to the Superfamilies: Perisphinctacea and Haplocerataceae are included in two families, three genus and four species Its upper part are 70 m of argillaceous limestones, shales and sandstone of La Caja Formation. The main objective of this article is the description of ammonites fauna. Is the first time in Mexico to be presented a sequence of rocks like Ibarillas section containing indicative ammonites of Oxfordian and Kimmeridgian age. In the Zuloaga Fm. is first time describe the presence of Vinalisphinctes gr. roigi indicanting the upper Oxfordian Bifurcating Zone. In the La Caja Fm. were recorded Idoceras sanlazarense, and Haploceras cf. costatum. of Kimmeridgian age. Close taxonomic and tectonic framework inside and outside Mexico of the Ibarillas fauna are not discussed in detail here, the ammonite species of the lower part of its section are common within faunas of Central México: Hidalgo and San Luis Potosí states which are therefore Thetyan in origenFauna correlations are stablished with North– Central and North of México. The paleogeographic interpretation based on the ammonites described here indicate a position of marine communication between the eastern Tethys and the western Pacific by the so called Hispanic Corridor.},
 year = {2022}
}

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TY  - JOUR
T1  - Ammonites of the Oxfordian and Kimmeridgian Age from North of Mexico
AU  - Raúl Sabino Carrasco-Ramírez
Y1  - 2022/08/17
PY  - 2022
N1  - https://doi.org/10.11648/j.ajbio.20221004.11
DO  - 10.11648/j.ajbio.20221004.11
T2  - American Journal of BioScience
JF  - American Journal of BioScience
JO  - American Journal of BioScience
SP  - 131
EP  - 136
PB  - Science Publishing Group
SN  - 2330-0167
UR  - https://doi.org/10.11648/j.ajbio.20221004.11
AB  - Few kilometres west of Aramberri, N. L This research work deals with the study of the ammonites of the Upper Jurassic outcrops, México were studied ammonites from the Ibarillas South of Nuevo Leon, Mexico, driving on federal highway No. 61 we get to Aramberri locality section which consists of 40 m of limestones at its lower part of the Zuloaga Formation. which bears the ammonite fauna described herein. Most of the north-north-west trending ranges of the area are made up of schist rocks of Paleozoic age, resting unconformably are limestones of Upper Jurassic age and finally are covered unconformably by conglomerates of Tertiary age. All collected ammonites were taxonomically studied and at the same time are included pictures with descriptions of four species one is the Upper Oxfordian Vinalesphinctes ex gr. roegi, the other three came from the Lower Kimmeridgian of North of Mexico. One of the three taxa described here is the Upper Oxfordian genus Vinalesphinctes. Belong to the Superfamilies: Perisphinctacea and Haplocerataceae are included in two families, three genus and four species Its upper part are 70 m of argillaceous limestones, shales and sandstone of La Caja Formation. The main objective of this article is the description of ammonites fauna. Is the first time in Mexico to be presented a sequence of rocks like Ibarillas section containing indicative ammonites of Oxfordian and Kimmeridgian age. In the Zuloaga Fm. is first time describe the presence of Vinalisphinctes gr. roigi indicanting the upper Oxfordian Bifurcating Zone. In the La Caja Fm. were recorded Idoceras sanlazarense, and Haploceras cf. costatum. of Kimmeridgian age. Close taxonomic and tectonic framework inside and outside Mexico of the Ibarillas fauna are not discussed in detail here, the ammonite species of the lower part of its section are common within faunas of Central México: Hidalgo and San Luis Potosí states which are therefore Thetyan in origenFauna correlations are stablished with North– Central and North of México. The paleogeographic interpretation based on the ammonites described here indicate a position of marine communication between the eastern Tethys and the western Pacific by the so called Hispanic Corridor.
VL  - 10
IS  - 4
ER  - 

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