Protaspid larvae are unique to trilobites

Protaspid larvae are unique to trilobites

Trilobites represent a model for ‘evo-devo’ studies in fossil euarthropods, owing to a rare developmental trait: the biomineralization of the dorsal exoskeleton soon after hatching. Many fossilized trilobite ontogenies thus feature early stages – the protaspides – characterized by non-articulated, c...

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Veröffentlicht in:Ventricular Restraint Improves Outcomes in HF Patients with CRT. - 2011. - Amsterdam [u.a.]
1. Verfasser: Lerosey-Aubril, Rudy (VerfasserIn)
Weitere Verfasser: Laibl, Lukáš (BerichterstatterIn)
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021transfer abstract
Zugriff auf das übergeordnete Werk:Ventricular Restraint Improves Outcomes in HF Patients with CRT
Schlagworte:Euarthropoda Aglaspidida Larval ecology Protaspis Ordovician Trilobita
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520 |a Trilobites represent a model for ‘evo-devo’ studies in fossil euarthropods, owing to a rare developmental trait: the biomineralization of the dorsal exoskeleton soon after hatching. Many fossilized trilobite ontogenies thus feature early stages – the protaspides – characterized by non-articulated, calcified dorsal exoskeletons. The recent discovery of a protaspid-like fossil occurring with aglaspidid remains in Middle Ordovician strata of Siberia has been interpreted as evidence for the presence of protaspides in these distant relatives of trilobites. In this contribution, we demonstrate that this Siberian protaspis actually belongs to the asaphid trilobite Isotelus (or a related taxon), a genus likely present in the same bed. We conclude that protaspid larvae still represent a developmental trait unique to Trilobita. 
520 |a Trilobites represent a model for ‘evo-devo’ studies in fossil euarthropods, owing to a rare developmental trait: the biomineralization of the dorsal exoskeleton soon after hatching. Many fossilized trilobite ontogenies thus feature early stages – the protaspides – characterized by non-articulated, calcified dorsal exoskeletons. The recent discovery of a protaspid-like fossil occurring with aglaspidid remains in Middle Ordovician strata of Siberia has been interpreted as evidence for the presence of protaspides in these distant relatives of trilobites. In this contribution, we demonstrate that this Siberian protaspis actually belongs to the asaphid trilobite Isotelus (or a related taxon), a genus likely present in the same bed. We conclude that protaspid larvae still represent a developmental trait unique to Trilobita. 
650 7 |a Euarthropoda  |2 Elsevier 
650 7 |a Aglaspidida  |2 Elsevier 
650 7 |a Larval ecology  |2 Elsevier 
650 7 |a Protaspis  |2 Elsevier 
650 7 |a Ordovician  |2 Elsevier 
650 7 |a Trilobita  |2 Elsevier 
700 1 |a Laibl, Lukáš  |4 oth 
773 0 8 |i Enthalten in  |n Elsevier Science  |t Ventricular Restraint Improves Outcomes in HF Patients with CRT  |d 2011  |g Amsterdam [u.a.]  |w (DE-627)ELV015921530 
773 1 8 |g volume:63  |g year:2021  |g pages:0 
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