Some paleontologists suggest that animals appeared much earlier, possibly as early as 1 billion years ago.

Some paleontologists relate many or most of these forms to modern animals.

Some paleontologists have classified the pangolins in the order Cimolesta, together with several extinct groups.

Some modern paleontologists still believe that Testudines are the only surviving branch of this ancient evolutionary grade, which includes groups such as procolophonids, millerettids, and pareiasaurs, although that view is not generally accepted.

Some paleontologists believe that it developed independently in monotremes ( or australosphenidans ), rather than being inherited from an ancestor that they share with marsupials and placentals ( or boreosphenidans ); but this idea has critics and the debate is still going on.

Some paleontologists have noted a perceived continuity in skeletal remains.

Some paleontologists have in the past considered the herrerasaurians to be members of Theropoda, while other theorized the group to be basal saurischians, and may even have evolved prior to the saurischian-ornithischian split.

Some 25 species of fossil fishes are often found with stomach contents preserved, enabling paleontologists to study predator-prey relationships in this ecosystem.

Some paleontologists claim that this fossil was removed from the Gobi desert without the permission of the Chinese government and sold without proper documentation.

Some paleontologists speculate that this eruption may have accelerated the extinction of the dinosaurs.

Some paleontologists have doubted the biplane hypothesis, and have proposed other configurations.

Some paleontologists have suggested that feathered dinosaurs used their wings to parachute from trees, possibly to attack or ambush prey on the ground, as a precursor to gliding or true flight.

Some paleontologists were of the opinion that the original specimens were not diagnostic beyond themselves and, therefore, that the name C. bauri could not be applied to any additional specimens.

Some paleontologists used the fifty percent estimate to ascertain the brain size of dinosaur endocasts.

Some paleontologists ( such as Sereno, 2005 < ref name =" sereno2005 ">) have contended that Titanosaurus is too poorly known to use as a basis for classification, family names for which it is the type genus ( e. g. Titanosaurinae, Titanosauridae, Titanosauroidea ) should not have other genera referred to them.

( Some Russian paleontologists ranked it as a superorder instead ).

Some paleontologists have concluded that for part of the year ceratopsids lived in small groups near the coasts and when the dry season came they formed large herds and moved inland.

Some paleontologists have concluded that for part of the year ceratopsids lived in small groups near the coasts and when the dry season came they formed large herds and moved inland.

Some paleontologists, like Paul Sereno, consider the enigmatic alvarezsaurids to be close relatives of the ornithomimosaurs and place them together in the superfamily Ornithomimoidea ( see classification below ).

Some 25 species of fossil fishes are often found with stomach contents preserved, enabling paleontologists to study predator-prey relationships in this ecosystem.

Some paleontologists such as Michael Lee have argued that pareiasaurs include the direct ancestors of modern turtles.

Some paleontologists have speculated that Gasosaurus and Kaijiangosaurus may be one and the same species.

Some paleontologists still place these forms among the " ostracoderms " ( jawless armored " fishes ") of the class Anaspida, but this is increasingly considered an artificial arrangement based on ancestral traits.

Some paleontologists consider the Scelidosauridae paraphyletic, but Benton ( 2004 ) lists the group as monophyletic.

Some persons consider the work on a farm recreational.

Some consider this more of a short story collection ; Milne didn't like it and considered The Day's Play as his first book.

Some of the people of Curraun consider themselves Achill people, and most natives of Achill refer to this area as being " in Achill ".

Some consider that naming the concept " Kolmogorov complexity " is an example of the Matthew effect.

Some consider such use of the term " incorrect.

Some Protestants feel that such claims of apostolic succession are proven false by the differences in traditions and doctrines between these churches: Roman Catholics and Eastern Orthodox consider both the Church of the East and the Oriental Orthodox churches to be heretical, having been anathematized in the early ecumenical councils of Ephesus ( 431 ) and Chalcedon ( 451 ) respectively.

Some authors, however, consider alkaloids a special case of amines.

Some consider that this makes a case for replacing ATM with Ethernet in the network backbone.

Some mathematicians, especially in set theory, do not consider the sets and to be part of the relation, and therefore define a binary relation as being a subset of x, that is, just the graph.

Some Christian readers consider this story to contain an allegory, representing the interaction between the church as ' bride ' and God.

Some Anglican churches consider themselves both Protestant and Catholic.

Some Anglicans consider their church a branch of the " One Holy Catholic Church " alongside of the Roman Catholic and Eastern Orthodox Churches, a concept rejected by the Roman Catholic Church and some Eastern Orthodox.

Some theorists, however, have speculated on what they consider suitable pre-conditions, and basic mechanisms that might have been important driving forces.

Some within the cognitive science community, however, consider these to be vital topics, and advocate the importance of investigating them.

This may be the case for words such as church in rhotic dialects of English, although phoneticians differ in whether they consider this to be a syllabic consonant,, or a rhotic vowel,: Some distinguish an approximant that corresponds to a vowel, for rural as or ; others see these as a single phoneme,.

Some critical observers consider that Uribe's policies, while admittedly reducing crime and guerrilla activity, might be too slanted in favor of a military solution to Colombia's internal war, neglecting grave social and human rights concerns to a certain extent.

Some groups, Christadelphians in particular, consider that it is not a universal resurrection, and that at this time of resurrection that the Last Judgment will take place.

Some people, however, consider this tantamount to censorship.

Some speculate that the pope could leave instructions in writing, perhaps in his will, for the appointment to be made known after his death ; but it is difficult to imagine a case in which the pope would consider that his own death would remove the obstacle in the way of publishing the name.

Some authors have used " basal " differently to mean a clade that is " more primitive " or less species-rich than its sister clade ; others consider this usage to be incorrect, and many now discourage the use of that term altogether to avoid such implications.

Some European communities, claims Lemon, consider the Roma people to be of low caste.

Some professional exegetes consider the Bible, to a greater or lesser degree, to be a document of its time, taking on attitudes which may not be God's.

Some consider literary theory merely an aesthetic concern, as articulated, for example, in Joseph Addison's notion of a critic as one who helps understand and interpret literary works: " A true critic ought to dwell rather upon excellences than imperfections, to discover the concealed beauties of a writer, and communicate to the world such things as are worth their observation.

Some Anglicans and Old Catholics accept that the Bishop of Rome is primus inter pares among all primates, but they embrace Conciliarism as a necessary check on what they consider to be the " excesses " of Ultramontanism.

Some researchers consider that contemporary Russia is not a true democracy and instead resembles a form of dictatorship.