| antarctica | | actinocyclus actinochilus | species | 2 | 0 |
| antarctica | | paralia sol | species | 1 | 0 |
| antarctica | | stellarima microtrias | species | 15 | 0 |
| argentina | chubut province | uncultured stephanopyxis | species | 1 | 0 |
| belgium | | aulacoseira sp. 115 | species | 1 | 0 |
| belgium | | melosira sp. 52 | species | 1 | 0 |
| brazil | sao paulo | hemidiscus cuneiformis | species | 1 | 0 |
| canada | british columbia | paralia guyana | species | 26 | 0 |
| canada | new brunswick | actinoptychus senarius | species | 2 | 0 |
| canada | new brunswick | coscinodiscus wailesii | species | 13 | 0 |
| canada | new brunswick | melosira nummuloides | species | 1 | 0 |
| canada | new brunswick | melosira sp. 1 seh-2013 | species | 3 | 0 |
| canada | new brunswick | melosira sp. 1bof | species | 6 | 0 |
| canada | new brunswick | melosira sp. 2bof | species | 2 | 0 |
| canada | new brunswick | melosira sp. seh-2012 | species | 2 | 0 |
| canada | new brunswick | paralia guyana | species | 36 | 0 |
| canada | newfoundland and labrador | paralia guyana | species | 12 | 0 |
| canada | nova scotia | paralia guyana | species | 44 | 0 |
| canada | ontario | aulacoseira granulata | species | 2 | 0 |
| canada | ontario | melosira varians | species | 2 | 0 |
| canada | prince edward island | paralia guyana | species | 3 | 0 |
| canada | quebec | paralia guyana | species | 3 | 0 |
| canada | quebec | paralia marina | species | 1468 | 0 |
| chile | | aulacoseira ambigua | species | 2 | 0 |
| chile | | aulacoseira granulata | species | 2 | 0 |
| chile | araucania region | aulacoseira granulata | species | 16 | 0 |
| chile | araucania region | aulacoseira granulata var. angustissima | varietas | 2 | 0 |
| chile | los lagos region | aulacoseira granulata | species | 4 | 0 |
| china | | aulacoseira ambigua | species | 1 | 0 |
| china | | aulacoseira subarctica | species | 1 | 0 |
| china | | melosira varians | species | 13 | 0 |
| france | rhone-alpes region | paralia marina | species | 112 | 0 |
| germany | schleswig-holstein | paralia marina | species | 12 | 0 |
| hong kong | | coscinodiscus wailesii | species | 10 | 0 |
| hong kong | | palmerina hardmaniana | species | 2 | 0 |
| hong kong | | stellarima microtrias | species | 1 | 0 |
| hong kong | | stephanopyxis turris | species | 8 | 0 |
| hungary | | melosira varians | species | 1 | 0 |
| india | | coscinodiscus radiatus | species | 1 | 0 |
| india | | coscinodiscus sp. mbtd-cmfri-s025 | species | 1 | 0 |
| ireland | | aulacoseira islandica | species | 1 | 0 |
| italy | friuli-venezia giulia autonomous region | paralia marina | species | 6 | 0 |
| kuwait | | melosira dubia | species | 1 | 0 |
| lebanon | | melosira dubia | species | 1 | 0 |
| lebanon | | melosira sp. mel | species | 2 | 0 |
| luxembourg | | aulacoseira subarctica | species | 1 | 0 |
| mexico | baja california sur | paralia fenestrata | species | 1 | 0 |
| montenegro | | paralia marina | species | 1 | 0 |
| netherlands | | paralia marina | species | 2 | 0 |
| new zealand | | podosira stelligera | species | 1 | 0 |
| russia | irkutsk oblast | ellerbeckia sp. tn-2014 | species | 3 | 0 |
| south africa | | actinoptychus sp. hk050 | species | 4 | 0 |
| south korea | | melosira varians | species | 1 | 0 |
| united kingdom | | aulacoseira ambigua | species | 1 | 0 |
| united kingdom | | coscinodiscus radiatus | species | 1 | 0 |
| united kingdom | | melosira varians | species | 1 | 0 |
| united kingdom | | stephanopyxis nipponica | species | 1 | 0 |
| united kingdom | scotland | paralia marina | species | 6 | 0 |
| united states | | actinoptychus sinensis | species | 1 | 0 |
| united states | | melosira arctica | species | 1 | 0 |
| united states | california | actinocyclus sp. 1 mpa-2013 | species | 4 | 0 |
| united states | california | actinoptychus undulatus | species | 3 | 0 |
| united states | california | asteromphalus sp. tn-2014 | species | 2 | 0 |
| united states | california | aulacodiscus oreganus | species | 3 | 0 |
| united states | california | coscinodiscus sp. 1 mpa-2013 | species | 2 | 0 |
| united states | california | coscinodiscus sp. tn-2014 | species | 3 | 0 |
| united states | california | hyalodiscus sp. 1 mpa-2013 | species | 3 | 0 |
| united states | california | melosira nummuloides | species | 1 | 0 |
| united states | california | melosira varians | species | 3 | 0 |
| united states | california | paralia guyana | species | 9 | 0 |
| united states | florida | actinocyclus sp. 1 mpa-2013 | species | 3 | 0 |
| united states | florida | coscinodiscus sp. 1 mpa-2013 | species | 6 | 0 |
| united states | georgia | coscinodiscus jonesianus | species | 3 | 0 |
| united states | hawaii | coscinodiscus sp. tn-2014 | species | 3 | 0 |
| united states | louisiana | stephanopyxis palmeriana | species | 2 | 0 |
| united states | maine | paralia guyana | species | 15 | 0 |
| united states | massachusetts | paralia guyana | species | 11 | 0 |
| united states | new jersey | melosira sp. tn-2014 | species | 3 | 0 |
| united states | new jersey | podosira stelligera | species | 3 | 0 |
| united states | new york | actinoptychus sp. tn-2014 | species | 3 | 0 |
| united states | ohio | melosira varians | species | 3 | 0 |
| united states | oregon | actinoptychus sp. tn-2014 | species | 2 | 0 |
| united states | oregon | paralia guyana | species | 3 | 0 |
| united states | south carolina | actinoptychus splendens | species | 3 | 0 |
| united states | washington | coscinodiscus granii | species | 2 | 0 |
| united states | washington | coscinodiscus radiatus | species | 4 | 0 |
| united states | washington | paralia guyana | species | 3 | 0 |
| uruguay | montevideo department | paralia marina | species | 12 | 0 |
| vietnam | | paralia longispina | species | 1 | 0 |