The consistently derived position of the Moroccan populations within a mostly Canarian clade suggests a further back-colonization of the continent.
Using IGS orbits and precise clocks for the GPS satellites the positions are generated by the combination of code derived positions and phase derived position differences.
Phylogenetic analysis recovers it in a derived position, close to Arthropoda; thus, it seems to belong to a grade of organization close to the point of becoming a true arthropod".
The mobile device can independently locate the derived position in a map, so a local service (without revealing its position to a third party) can be easily provided on top of this locating information, or some value-added services can be obtained by sharing this locating information with others.
Recent analyses place Dendrerpetontidae outside Edopoidea in a more derived position.
Therefore, based on the context of this dataset, the derived position of Tapuiasaurus can be considered as robust as that of other derived lithostrotians.
Such a derived position of Tapuiasaurus, despite being well supported by character data, creates three extensive ghost lineages that are critical to understand the pace of diversification of advanced titanosaurians (see below).
This result also holds for other advanced titanosaurians, suggesting that the derived position of Tapuiasaurus can be considered as robust as that of other taxa belonging to that clade [Figures S5 and S6].
The derived position of Tapuiasaurus and its Aptian age reveal the existence of multiple and extensive ghost lineages [5], which lengthen to 30 million years the diversification of advanced titanosaurians (Figure 7).
Furthermore, placing Leonerasaurus in a slightly more derived position than in the MPTs (i.e., within the basal nodes of the Melanorosaurus+Sauropoda clade) implies between three and six additional steps (depending on the position of other taxa such as Blikanasaurus and Camelotia; Templeton p-values ranging between 0.0339 and 0.1025).
Dracochelys bicuspis occupies the most derived position among these taxa.
