The phrase "are reported to exist" is correct and usable in written English.
It can be used when discussing claims or observations about the existence of something, often in a formal or academic context.
Example: "Several species of animals are reported to exist in the remote rainforest, although they have yet to be documented by scientists."
Alternatives: "are said to exist" or "are claimed to exist".
Giant oil plumes mixed with seawater are reported to exist beneath the surface, but nobody in government seems to know how deep and broad they are and what fish species they may be damaging.
Extrapolate this to a peloton where high levels of cortisone use and abuse are reported to exist and you could have a ticking bomb – how soon before we see a further raft of riders not just with dodgy knees but major depression?
Similar mylonite structures in ultramafic rocks are reported to exist at various localities, such as Balmuccia Peridotite, Italy (Ueda et al. 2008), Hilti Massif, Josephine Peridotite, USA (Skemer et al. 2010, 2013), Oman (Linckens et al. 2011; Michibayashi and Oohara 2013), and Étang de Lers, France (Drury et al. 2011).
The ranges of these two southern subspecies overlap and intermediate forms are reported to exist, although this has not been confirmed.
Distinct biological variations are reported to exist among different members of the An.
A total of 10,311 species are reported to exist exclusively in only one South American subregion, that is, 75.5% of the total species reported for the region.
A wide variety of stem cells has been reported to exist and renew several adult tissues, raising the question of the existence of a stemness signature that is, a common molecular program of differentiation.
The latest report by the Ethics Resource Center they indicated that workplace misconduct is at an historic low (only 41percentt of those surveyed reporting it), having steadily declined since 2007 where it was reported to exist from 55percentt of those surveyed.
Moreover, a combination of FLH and MDL of the median nerve is reported to exist [9], as in our case.
However, xylose tolerant β-xylosidases have been reported to exist with Ki values up to 200 mM (Yan et al. [2008]; Zanoelo et al. [2004]).
