Search results for "Acrochordiceras"

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Globacrochordiceras gen. nov. (Acrochordiceratidae, late Early Triassic) and its significance for stress-induced evolutionary jumps in ammonoid linea…

2013

<i>Globacrochordiceras transpacificum</i> gen. et sp. nov. is an ammonoid (Ammonoidea, Cephalopoda) with a shell characterized by plicate ribbing (rounded and undulating ribs strengthening on the venter without interruption), increasing involution through ontogeny, overhanging and deep umbilical wall, absence of tuberculation, subtriangular whorl section, globose adult shape with a closed umbilicus followed by an abrupt egressive coiling, and a subammonitic adult suture line. This new taxon occurs in Nevada (USA) and in Guangxi (South China). It has its typical occurrence within the <i>Neopopanoceras haugi</i> Zone of late Spathian age (Early Triassic). The plicate r…

0106 biological sciences010506 paleontologySouth chinaEvolutionOntogenyEarly Triassic10125 Paleontological Institute and Museum010603 evolutionary biology01 natural sciencesPaleontology14. Life underwaterSouth ChinaNeotenylcsh:QE701-7600105 earth and related environmental sciences[ SDU.STU.PG ] Sciences of the Universe [physics]/Earth Sciences/PaleontologySpathianbiologyStress inducedAmmonoidsAmmonoideaAcrochordicerasbiology.organism_classificationAnisian1911 PaleontologyAdult size560 Fossils & prehistoric life13. Climate actionlcsh:Paleontology[SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/PaleontologyGeologyNevada
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