are known from

USAGE SUMMARY

The phrase "are known from" is correct and usable in written English.
It can be used when referring to sources or references from which information is derived or recognized. Example: "These species are known from various studies conducted in the region."

✓ Grammatically correct

Science

Encyclopedias

News & Media

Academia

Wiki

Human-verified examples from authoritative sources

Exact Expressions

59 human-written examples

No crustaceans are known from the Ediacaran.

The Economist

Fossil gastropods are known from Cambrian deposits.

Encyclopedia Britannica

Definite theropod tracks are known from the Clayton Lake spillway.

University of California, Berkeley

Some prophets are known from the period of Hellenistic Judaism.

Britannica

True sawflies (Tenthredinoidea) also are known from the Jurassic Period.

Britannica

Numerous polyketides are known from bacteria, plants, and fungi.

Fungal Genetics and Biology

Vortex shedding and vortex flowmeters are known from decades.

Sensors and Actuators A: Physical

Fossils of Cornuta are known from the Middle Cambrian to the Late Ordovician; the Ankyroida are known from the Early Ordovician through the Late Carboniferous.

University of California, Berkeley

Archaeocyath buildups are known from localities throughout the world, including Russia, Australia, Antarctica and Nevada.

University of California, Berkeley

A few lichen fossils are known from Mesozoic and Cenozoic rocks.

University of California, Berkeley

Human-verified similar examples from authoritative sources

Similar Expressions

1 human-written examples

Plant diseases are known from times preceding the earliest writings.

Britannica

Expert writing Tips

Best practice

When using "are known from", ensure the source you are referencing is clearly identified to maintain clarity and credibility. For instance, "These fossils are known from Cambrian deposits."

Common error

Avoid using "are known from" without specifying the exact source, as it can lead to ambiguity. Instead of saying "These effects are known from studies", specify which studies.

Linguistic Context

The phrase "are known from" primarily functions as a declarative statement that indicates the source or origin of information. Ludwig examples show its use in contexts where the source is being explicitly identified.

Expression frequency: Very common

Frequent in

Science

29%

Encyclopedias

17%

News & Media

15%

Less common in

Academia

15%

Wiki

8%

Formal & Business

0%

Ludwig's WRAP-UP

The phrase "are known from" is a common and grammatically correct way to indicate the source or origin of information. As Ludwig AI confirms, it's widely used across various contexts, including science, encyclopedias, and news media. To ensure clarity, always specify the source when using this phrase. While alternatives like "are recognized from" and "are derived from" exist, "are known from" remains a versatile and reliable choice for attributing information to its origin.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

are recognised from

Focuses on the ability to identify something based on a specific source.

are identified from

Highlights the process of determining the nature of something based on a specific origin.

are familiar from

Emphasizes the sense of recognition due to previous exposure or experience.

are derived from

Indicates that something originates or stems from a particular source.

are sourced from

Focuses on the origin or supplier of something, often in a material context.

are ascertained from

Suggests a more formal or investigative process of discovering information.

are determined by

Indicates that the phrase is established or decided by something.

are established by

Highlights that the phrase is supported or verified by something.

stem from

Shorter and more direct, implying origin or cause.

originate from

Emphasizes the point of origin or beginning.

FAQs

How do I use "are known from" in a sentence?

Use "are known from" to indicate the source or origin of information. For example, "The side effects of this medication "are known from" clinical trials".

What's a good alternative to "are known from"?

Alternatives include "are recognized from", "are identified from", or "are derived from", depending on the context. The phrase "The symptoms "are recognized from" the patient's description".

What is the difference between "are known from" and "are based on"?

"Are known from" indicates the source of knowledge, while "are based on" indicates the foundation or reason for something. For example, "These findings "are known from" a recent study" versus "This theory "is based on" empirical evidence".

Is it formal to use "are known from"?

The phrase "are known from" is appropriate for both formal and informal contexts. It is frequently used in academic, scientific, and news-related content.