Journal profile · Paleontology
Micropaleontology
ISSN 0026-2803 · Micropaleontology Press · UNITED STATES · Bimonthly · Founded 1955
Micropaleontology: CAS Zone 4 · Earth Sciences (2025 upgraded edition); impact factor 1.41; subscription journal; review over 12 weeks (community reports); community-reported acceptance: easy; 32 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
Micropaleontology is published by Micropaleontology Press and is in Zone 4 of Earth Sciences in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Geology and Paleoclimatology Research, Paleontology and Stratigraphy of Fossils and Marine Biology and Ecology Research, together about 50.6% of its articles. Its main subfields are Paleontology. (generated from OpenAlex topic counts and CAS ranking data)
The Journal of Micropalaeontology (JM) is an established international journal covering all aspects of microfossils and their application to both applied studies and basic research. In particular we welcome submissions relating to microfossils and their application to palaeoceanography, palaeoclimatology, palaeobiology, evolution, taxonomy, environmental change and molecular phylogeny. Owned by The Micropalaeontological Society, the scope of the journal is broad, demonstrating the application of microfossils to solving broad geoscience issues.
Source: LetPub
Research area (LetPub): Paleontology
Main research topics OpenAlex counts of recent articles; shares are approximate
- Geology and Paleoclimatology ResearchEarth and Planetary Sciences23.1%
- Paleontology and Stratigraphy of FossilsEarth and Planetary Sciences18%
- Marine Biology and Ecology ResearchEarth and Planetary Sciences9.5%
- Evolution and Paleontology StudiesEarth and Planetary Sciences5.7%
- Marine and environmental studiesEarth and Planetary Sciences5.4%
- Isotope Analysis in EcologyEnvironmental Science4.4%
- Geological and Geophysical StudiesEarth and Planetary Sciences4.1%
- Geological formations and processesEarth and Planetary Sciences3.3%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Earth Sciences Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Earth Sciences | Zone 4 |
| Minor | Paleontology | Zone 4 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Earth Sciences Zone 3
| Level | Category | Zone |
|---|---|---|
| Major | Earth Sciences | Zone 3 |
| Minor | Paleontology | Zone 4 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Earth Sciences Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Earth Sciences | Zone 4 |
| Minor | Paleontology | Zone 4 |
Top journal: noReview journal: no
Database indexing
SCIEScopusLetPub
International journal early-warning lists: not listed in any editionLetPub
Editions, and major and minor categories, are shown separately and never merged into one zone; check which edition your institution uses before you submit or report.
Metrics
Impact metrics and publication volume
Impact
- Impact factor
- 1.41LetPub ·
- CiteScore 2026-06
- 2.4LetPub ·
- SJR 2026-06
- 0.41LetPub ·
- SNIP 2026-06
- 0.63LetPub ·
- h-index
- 40LetPub ·
- h-index
- 104OpenAlex ·
- i10-index
- 1,211OpenAlex ·
- 2-year mean citedness
- 0.77OpenAlex ·
- Self-citation rate
- 21.4%LetPub ·
- Share of gold OA articles
- 0%LetPub ·
Volume
- Articles per year
- 25LetPub ·
Articles by year OpenAlex count · 2,362 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 30 | 2 | 9 |
| 2025 | 32 | 2 | 21 |
| 2024 | 36 | 2 | 45 |
| 2023 | 21 | 2 | 64 |
| 2022 | 34 | 1 | 121 |
| 2021 | 35 | 1 | 210 |
Sources count differently and were observed at different times, so each source's own value is kept; "publisher" marks figures from the journal's website.
Review & acceptance
Review time and acceptance
- Average review time (community reports)
- over 12 weeksLetPub ·
- Average acceptance (community reports)
- EasyLetPub ·
Community reports come from authors' own submissions (confidence 0.5) and are not a promise from the journal; for publisher figures, the journal's own definitions apply.
Fees & open access
APC and open-access policy
Subscription journalLetPub
A subscription journal: articles are read by subscription or purchase, and authors usually pay no publication charge.
No source has fee information yet; check the journal's website.
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Profile
Publication details and official links
- Publisher
- Micropaleontology Press
- Country or region
- UNITED STATES
- Language
- English
- Frequency
- Bimonthly
- Founded
- 1955
- ISSN
- 0026-2803
- Official links
- Journal homepage ↗OpenAlex
- Submission system ↗LetPub
FAQ
Frequently asked questions about Micropaleontology
What CAS zone is Micropaleontology in?
In the 2025 upgraded edition of the CAS Journal Ranking, Micropaleontology is in Zone 4 of Earth Sciences, and in Zone 4 of the minor category Paleontology. In the 2026 Xinrui edition it is in Zone 3 of Earth Sciences. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of Micropaleontology?
The latest impact factor listed by LetPub is 1.41; CiteScore 2.4, h-index 104.
How long does peer review take at Micropaleontology?
Authors report an average review time of over 12 weeks; the community-reported acceptance is “Easy”. Article statistics cover accepted papers only, publisher figures follow the journal's own definitions, and community reports come from authors' own submissions; none is a promise from the journal.
Which databases index Micropaleontology?
According to LetPub and DOAJ records, Micropaleontology is indexed in SCIE and Scopus.
Is Micropaleontology open access, and what is the APC?
Micropaleontology is a subscription journal. Fee information is not available yet; check the journal's website.
Sources and updates
The facts on this page come from LetPub, OpenAlex; every figure is tagged with its source and the date it was observed, and conflicting values are kept per source. LetPub source page: view ↗ (archived 2026-08-26). Last updated: .