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 paleontologists consider " living fossils " with large distributions ( such as Triops cancriformis ) not to be real living fossils.

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 ( 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 look deliberately to devices used by creators in the other arts and apply corresponding methods to their own work.

Some school systems provide written instructions to principals and teachers designating when certain information is to be recorded on cumulative record forms and explaining how the information is to be summarized and used.

Some are used in paints along with drying oils.

Some alphabets today, such as the Hanuno ' o script, are learned one letter at a time, in no particular order, and are not used for collation where a definite order is required.

Some ancient cultures used lime-based cement for the plaster to protect against rain damage.

Some more recent studies have used the word anthophyte to describe a group which includes the angiosperms and a variety of fossils ( glossopterids, Pentoxylon, Bennettitales, and Caytonia ), but not the Gnetales.

Some drug treatments that have been used to control ataxia include: 5-hydroxytryptophan ( 5-HTP ), idebenone, amantadine, physostigmine, L-carnitine or derivatives, trimethoprim – sulfamethoxazole, vigabatrin, phosphatidylcholine, acetazolamide, 4-aminopyridine, buspirone, and a combination of coenzyme Q10 and vitamin E.

Some tall cylinders are considered ceremonial vessels, while narrow-necked jars may have been used for liquids.

Some anagrammatists indicate the method they used.

Some jurisdictions allow force to be used in defense of property, to prevent damage either in its own right, or under one or both of the preceding classes of defense in that a threat or attempt to damage property might be considered a crime ( in English law, under s5 Criminal Damage Act 1971 it may be argued that the defendant has a lawful excuse to damaging property during the defense and a defense under s3 Criminal Law Act 1967 ) subject to the need to deter vigilantes and excessive self-help.

Some approximants resemble vowels in acoustic and articulatory properties and the terms semivowel and glide are often used for these non-syllabic vowel-like segments.

Some feel that the text of Acts shows evidence of having used the Jewish historian Josephus as a source ( in which case it would have to have been written sometime after 94 AD ).

Some early AGP boards used graphics processors built around PCI and were simply bridged to AGP.

Some of the side-effects will appear after the drug has been used only for a long time.

Some argue that, overall, the evidence suggests that antipsychotics only help if they are used selectively and are gradually withdrawn as soon as possible and have referred to the " Myth of the antipsychotic ".

( Some of the terms used below are defined in Uniform polychoron # Geometric derivations.

Some early Americans used trees or bamboo poles to cross small caverns or wells to get from one place to another.

Some systems used a CD-ROM drive to make the files available.

Some BBSes, called elite, WaReZ or pirate boards, were exclusively used for distributing pirated software, phreaking, and other questionable or unlawful content.

Some networks used QWK doors, and others such as RelayNet ( RIME ) and WWIVnet used non-Fido software and standards.

Some smaller designs have been used as the basis for specialist fighters, such as night fighters, and a number of fighters, such as the Hawker Hurricane were used as ground attack aircraft bombers, replacing earlier conventional light bombers that proved unable to defend themselves and carry a reasonable bombload.

Some heavy metro infrastructures were built in Brussels, Antwerp and the Charleroi area, but these are currently used by light rail vehicles, and their conversion to full metro is not envisaged at present due to lack of funds.

Some Burundian rebel groups have used neighboring countries as bases for insurgent activities.