However the placement and circumscription of Boraginaceae is still uncertain: it is unplaced at order level, and there is some prospect of it being split up again in future.

The exact number and placement of Endosymbiotic theory | endosymbiotic events is currently unknown, so this diagram can be taken only as a general guide It represents the most parsimonious way of explaining the three types of endosymbiotic origins of plastids.

In the Pollard script, an abugida, vowels are indicated by diacritics, but the placement of the diacritic relative to the consonant is modified to indicate the tone.

This placement is consistent with the modern practice of ordering the elements by proton number, Z, but this number was not known or suspected at the time.

However, the exact placement of the linkage can vary and the orientation of the linking functional groups is also important, resulting in α-and β-glycosidic bonds with numbering definitive of the linking carbons ' location in the ring.

The importance of this theme is indicated by its placement at the beginning and end of Second Isaiah ( 40: 3 – 5, 55: 12 – 13 ).

Dennis the Menace's famous ' red and black ' jersey had formed the colours of a few of the Beano characters ' clothes ( Minnie the Minx has the same, although the placement of the stripes is a bit different ; Ball Boy's was a vertical red and black ; Roger the Dodger has a chessboard design top, and Danny ( from the Bash Street Kids ) has a similar cap ), but they have changed for Minnie and Ball Boy ( Minnie at one point had a red and yellow top and Ball Boy's strip is now black and blue ).

First, its mix consistency is fluid and homogeneous, allowing it to be poured into forms rather than requiring hand-layering together with the placement of aggregate, which, in Roman practice, often consisted of rubble.

The sound hole is normally a single round hole in the top of the guitar ( under the strings ), though some have different placement, shapes, or numbers of holes.

Biological taxonomy is not fixed, and placement of taxa is reviewed as a result of new research.

To create the desired curve, the shape of a hanging chain of the desired dimensions is transferred to a form which is then used as a guide for the placement of bricks or other building material.

A distinguishing feature of most Compactrons is the placement of the evacuation tip on the bottom end, rather than the top end as was customary with " miniature " tubes, and a characteristic 3 / 4 " diameter circle pin pattern.

( At least in the Nǁng language and Juǀʼhoan, this is associated with a difference in the placement of the rear articulation: " grave " clicks are uvular, whereas " acute " clicks are pharyngeal.

Slacklining and the placement of new fixed anchors on new climbs is also prohibited.

This table is a crucial regulatory tool for controlling the placement and power levels of stations.

The grave accent is used to distinguish between words that are different only in placement of the stress, for example appel ( apple ) and appèl ( appeal ) and in a few cases where it makes no difference to the pronunciation but distinguishes between homophones.

Balancing these two considerations is what eventually leads to rules regarding the correct placement of the caesura and breaks between words ; in general, word breaks occur in the middle of metrical feet, while accent and ictus coincide only near the end of the line.

Shading is the technique of varying the tonal values on the paper to represent the shade of the material as well as the placement of the shadows.

A trained artist is familiar with the skeleton structure, joint location, muscle placement, tendon movement, and how the different parts work together during movement.

The placement of the light sources can make a considerable difference in the type of message that is being presented.

Unlike The Settlers of Catan and Cities & Knights of Catan, in which the only random element of setup is the placement of land tiles, number tokens, and harbors in an identically-shaped playing area, Seafarers of Catan has a number of different scenarios or maps from which to choose.

Their jurisdiction can be illustrated with an example: Parents unsatisfied with the school placement of their child would appeal against the board of education in an administrative court as the school placement is subject to an administrative decision.

The exact taxonomic placement of New World Vultures remains unclear.

The exact taxonomic placement of New World vultures remains unclear.

The subfamilial organization has not been fully resolved, but the subfamilies Aurantioideae (= Citroideae ) and Rutoideae are well supported ; the placement of several genera remains unclear.

The exact taxonomic placement of the Turkey Vulture and the remaining six species of New World Vultures remains unclear.

The placement of the New World vultures has been unclear since the early 1990s.

Charles Sibley's DNA-DNA hybridization studies placed them close to the lyrebirds ; however, anatomical evidence appears to contradict this placement, and the true relationship remains unclear.

The exact taxonomic placement of the Andean Condor and the remaining six species of New World Vultures remains unclear.

The exact systematic placement of the King Vulture and the remaining six species of New World vultures remains unclear.

In addition, Sininkere ( Burkina Faso ) is of unclear placement within Manding.

While its placement within the order is still unclear, it is closely related to Martyniaceae, Lentibulariaceae as well as Gesneriaceae.

The Coliadinae can be arranged in the 3 traditional tribes and a basal lineage, with one genus of unclear placement.

Since 2002, molecular phylogenetic studies have recognized a close relationship between Hydrochoerus and Kerodon supporting placement of both genera in a subfamily of Caviidae.

The term yeast is often taken as a synonym for Saccharomyces cerevisiae, but the phylogenetic diversity of yeasts is shown by their placement in two separate phyla: the Ascomycota and the Basidiomycota.

The phylogenetic placement of this phylum in the past has proved troublesome.

In 2007 the American Ornithologists ' Union's North American checklist moved Cathartidae back into the lead position in Falconiformes, but with an asterisk that indicates it is a taxon " that is probably misplaced in the current phylogenetic listing but for which data indicating proper placement are not yet available ".

In 2007 the American Ornithologists ' Union's North American checklist moved Cathartidae back into the lead position in Falconiformes, but with an asterisk that indicates it is a taxon " that is probably misplaced in the current phylogenetic listing but for which data indicating proper placement are not yet available ".

( 2004 ) and Fain and Houde ( 2004, 2006 ) that the correct placement of buttonquails within the shorebirds ( order Charadriiformes ) was documented on the basis of phylogenetic analysis of multiple genetic loci.

According to the famous DNA hybridization study into avian phylogenetic relationships by Sibley and Ahlquist, the split of the Procellariiformes into the four families occurred around 30 million years ago ; a fossil bone often attributed to the order, described as the genus Tytthostonyx, has been found in rocks dating around the Cretaceous – Paleogene boundary ( 70-60 mya ), but the remains are too incomplete for placement within the Procellariiformes to be certain.

The placement of Pantherophis guttatus and several related species in Pantherophis rather than Elaphe has been confirmed by further phylogenetic studies.

Most recent phylogenetic analyses favour placement of glossopterids as sister to a large group including Corystospermales, Caytoniales, Bennettitales, Pentoxylales, Gnetales ( in some analyses ), and angiosperms.

If a formal phylogenetic analysis is conducted that does not include a certain taxon, the authors might choose to label the taxon incertae sedis instead of guessing its placement.

The scope of Crurotarsi has recently been changed by the phylogenetic placement of phytosaurs.

Below is a cladogram from their study showing the phylogenetic placement of Masiakasaurus: