diff --git a/honeycomb-core/src/cells/collections.rs b/honeycomb-core/src/cells/collections.rs
index 34d5208d..0510cf16 100644
--- a/honeycomb-core/src/cells/collections.rs
+++ b/honeycomb-core/src/cells/collections.rs
@@ -6,7 +6,7 @@
 
 // ------ IMPORTS
 
-use crate::{CMap2, CoordsFloat, EdgeIdentifier, FaceIdentifier, VertexIdentifier};
+use crate::{CMap2, CoordsFloat};
 
 // ------ CONTENT
 
@@ -25,6 +25,13 @@ macro_rules! collection_constructor {
 
 // --- vertices
 
+/// Type definition for vertex identifiers
+///
+/// This is used for better control over memory usage and ID encoding.
+pub type VertexIdentifier = u32;
+
+pub const NULL_VERTEX_ID: VertexIdentifier = 0;
+
 pub struct VertexCollection<'a, T: CoordsFloat> {
     lifetime_indicator: std::marker::PhantomData<&'a CMap2<T>>,
     pub identifiers: Vec<VertexIdentifier>,
@@ -34,6 +41,13 @@ collection_constructor!(VertexCollection, VertexIdentifier);
 
 // --- edges
 
+/// Type definition for edge identifiers
+///
+/// This is used for better control over memory usage and ID encoding.
+pub type EdgeIdentifier = u32;
+
+pub const NULL_EDGE_ID: EdgeIdentifier = 0;
+
 pub struct EdgeCollection<'a, T: CoordsFloat> {
     lifetime_indicator: std::marker::PhantomData<&'a CMap2<T>>,
     pub identifiers: Vec<EdgeIdentifier>,
@@ -43,9 +57,25 @@ collection_constructor!(EdgeCollection, EdgeIdentifier);
 
 // --- faces
 
+/// Type definition for face identifiers
+///
+/// This is used for better control over memory usage and ID encoding.
+pub type FaceIdentifier = u32;
+
+pub const NULL_FACE_ID: FaceIdentifier = 0;
+
 pub struct FaceCollection<'a, T: CoordsFloat> {
     lifetime_indicator: std::marker::PhantomData<&'a CMap2<T>>,
     pub identifiers: Vec<FaceIdentifier>,
 }
 
 collection_constructor!(FaceCollection, FaceIdentifier);
+
+// --- volumes
+
+/// Type definition for volume identifiers
+///
+/// This is used for better control over memory usage and ID encoding.
+pub type VolumeIdentifier = u32;
+
+pub const NULL_VOLUME_ID: VolumeIdentifier = 0;
diff --git a/honeycomb-core/src/cells/identifiers.rs b/honeycomb-core/src/cells/identifiers.rs
deleted file mode 100644
index 335e7ba0..00000000
--- a/honeycomb-core/src/cells/identifiers.rs
+++ /dev/null
@@ -1,41 +0,0 @@
-//! Custom identifier type aliases
-//!
-//! This module is most likely temporary as ID types will be moved to where cell-specific
-//! attributes are defined.
-
-// ------ CONTENT
-
-/// Type definition for dart identifiers
-///
-/// This is used for better control over memory usage and ID encoding.
-pub type DartIdentifier = u32;
-
-pub const NULL_DART_ID: DartIdentifier = 0;
-
-/// Type definition for vertex identifiers
-///
-/// This is used for better control over memory usage and ID encoding.
-pub type VertexIdentifier = u32;
-
-pub const NULL_VERTEX_ID: DartIdentifier = 0;
-
-/// Type definition for edge identifiers
-///
-/// This is used for better control over memory usage and ID encoding.
-pub type EdgeIdentifier = u32;
-
-pub const NULL_EDGE_ID: DartIdentifier = 0;
-
-/// Type definition for face identifiers
-///
-/// This is used for better control over memory usage and ID encoding.
-pub type FaceIdentifier = u32;
-
-pub const NULL_FACE_ID: DartIdentifier = 0;
-
-/// Type definition for volume identifiers
-///
-/// This is used for better control over memory usage and ID encoding.
-pub type VolumeIdentifier = u32;
-
-pub const NULL_VOLUME_ID: DartIdentifier = 0;
diff --git a/honeycomb-core/src/cells/mod.rs b/honeycomb-core/src/cells/mod.rs
index 2a46b9d9..9eef6cc9 100644
--- a/honeycomb-core/src/cells/mod.rs
+++ b/honeycomb-core/src/cells/mod.rs
@@ -5,5 +5,13 @@
 // ------ MODULE DECLARATIONS
 
 pub mod collections;
-pub mod identifiers;
 pub mod orbits;
+
+// ------ CONTENT
+
+/// Type definition for dart identifiers
+///
+/// This is used for better control over memory usage and ID encoding.
+pub type DartIdentifier = u32;
+
+pub const NULL_DART_ID: DartIdentifier = 0;
diff --git a/honeycomb-core/src/lib.rs b/honeycomb-core/src/lib.rs
index 5dd8dd3a..f88b69d9 100644
--- a/honeycomb-core/src/lib.rs
+++ b/honeycomb-core/src/lib.rs
@@ -31,12 +31,13 @@ pub use attributes::{
     traits::{AttributeBind, AttributeUpdate},
 };
 pub use cells::{
-    collections::{EdgeCollection, FaceCollection, VertexCollection},
-    identifiers::{
-        DartIdentifier, EdgeIdentifier, FaceIdentifier, VertexIdentifier, VolumeIdentifier,
-        NULL_DART_ID, NULL_EDGE_ID, NULL_FACE_ID, NULL_VERTEX_ID, NULL_VOLUME_ID,
+    collections::{
+        EdgeCollection, EdgeIdentifier, FaceCollection, FaceIdentifier, VertexCollection,
+        VertexIdentifier, VolumeIdentifier, NULL_EDGE_ID, NULL_FACE_ID, NULL_VERTEX_ID,
+        NULL_VOLUME_ID,
     },
     orbits::{Orbit2, OrbitPolicy},
+    DartIdentifier, NULL_DART_ID,
 };
 pub use spatial_repr::{
     coords::{Coords2, CoordsError},