2 results match your criteria Anatomical Record-advances In Integrative Anatomy And Evolutionary Biology[Journal]

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Ontogeny reveals function and evolution of the hadrosaurid dinosaur dental battery.

BMC Evol Biol 2016 07 28;16:152. Epub 2016 Jul 28.

Department of Pathology and Anatomical Sciences, Integrative Anatomy, University of Missouri, Columbia, MO, 65201, USA.

Background: Hadrosaurid dinosaurs, dominant Late Cretaceous herbivores, possessed complex dental batteries with up to 300 teeth in each jaw ramus. Despite extensive interest in the adaptive significance of the dental battery, surprisingly little is known about how the battery evolved from the ancestral dinosaurian dentition, or how it functioned in the living organism. We undertook the first comprehensive, tissue-level study of dental ontogeny in hadrosaurids using several intact maxillary and dentary batteries and compared them to sections of other archosaurs and mammals. Read More

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http://dx.doi.org/10.1186/s12862-016-0721-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4964017PMC
July 2016
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Muscular anatomy of an entoproct creeping-type larva reveals extraordinary high complexity and potential shared characters with mollusks.

BMC Evol Biol 2015 Jul 3;15:130. Epub 2015 Jul 3.

Department of Integrative Zoology, University of Vienna, 1090, Vienna, Austria.

Background: Entoprocta (Kamptozoa) is an enigmatic, acoelomate, tentacle-bearing phylum with indirect development, either via a swimming- or a creeping-type larva and still debated phylogenetic position within Lophotrochozoa. Recent morphological and neuro-anatomical studies on the creeping-type larva support a close relationship of Entoprocta and Mollusca, with a number of shared apomorphies including a tetraneurous nervous system and a complex serotonin-expressing apical organ. However, many morphological traits of entoproct larvae, in particular of the putative basal creeping-type larva, remain elusive. Read More

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http://dx.doi.org/10.1186/s12862-015-0394-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4490756PMC
July 2015
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